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+@chapter Codec Options
+@c man begin CODEC OPTIONS
+
+libavcodec provides some generic global options, which can be set on
+all the encoders and decoders. In addition each codec may support
+so-called private options, which are specific for a given codec.
+
+Sometimes, a global option may only affect a specific kind of codec,
+and may be unsensical or ignored by another, so you need to be aware
+of the meaning of the specified options. Also some options are
+meant only for decoding or encoding.
+
+Options may be set by specifying -@var{option} @var{value} in the
+FFmpeg tools, or by setting the value explicitly in the
+@code{AVCodecContext} options or using the @file{libavutil/opt.h} API
+for programmatic use.
+
+The list of supported options follow:
+
+@table @option
+@item b @var{integer} (@emph{encoding,audio,video})
+Set bitrate in bits/s. Default value is 200K.
+
+@item ab @var{integer} (@emph{encoding,audio})
+Set audio bitrate (in bits/s). Default value is 128K.
+
+@item bt @var{integer} (@emph{encoding,video})
+Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate
+tolerance specifies how far ratecontrol is willing to deviate from the
+target average bitrate value. This is not related to min/max
+bitrate. Lowering tolerance too much has an adverse effect on quality.
+
+@item flags @var{flags} (@emph{decoding/encoding,audio,video,subtitles})
+Set generic flags.
+
+Possible values:
+@table @samp
+@item mv4
+Use four motion vector by macroblock (mpeg4).
+@item qpel
+Use 1/4 pel motion compensation.
+@item loop
+Use loop filter.
+@item qscale
+Use fixed qscale.
+@item gmc
+Use gmc.
+@item mv0
+Always try a mb with mv=<0,0>.
+@item input_preserved
+
+@item pass1
+Use internal 2pass ratecontrol in first pass mode.
+@item pass2
+Use internal 2pass ratecontrol in second pass mode.
+@item gray
+Only decode/encode grayscale.
+@item emu_edge
+Do not draw edges.
+@item psnr
+Set error[?] variables during encoding.
+@item truncated
+
+@item naq
+Normalize adaptive quantization.
+@item ildct
+Use interlaced DCT.
+@item low_delay
+Force low delay.
+@item global_header
+Place global headers in extradata instead of every keyframe.
+@item bitexact
+Use only bitexact stuff (except (I)DCT).
+@item aic
+Apply H263 advanced intra coding / mpeg4 ac prediction.
+@item cbp
+Deprecated, use mpegvideo private options instead.
+@item qprd
+Deprecated, use mpegvideo private options instead.
+@item ilme
+Apply interlaced motion estimation.
+@item cgop
+Use closed gop.
+@end table
+
+@item sub_id @var{integer}
+Deprecated, currently unused.
+
+@item me_method @var{integer} (@emph{encoding,video})
+Set motion estimation method.
+
+Possible values:
+@table @samp
+@item zero
+zero motion estimation (fastest)
+@item full
+full motion estimation (slowest)
+@item epzs
+EPZS motion estimation (default)
+@item esa
+esa motion estimation (alias for full)
+@item tesa
+tesa motion estimation
+@item dia
+dia motion estimation (alias for epzs)
+@item log
+log motion estimation
+@item phods
+phods motion estimation
+@item x1
+X1 motion estimation
+@item hex
+hex motion estimation
+@item umh
+umh motion estimation
+@item iter
+iter motion estimation
+@end table
+
+@item extradata_size @var{integer}
+Set extradata size.
+
+@item time_base @var{rational number}
+Set codec time base.
+
+It is the fundamental unit of time (in seconds) in terms of which
+frame timestamps are represented. For fixed-fps content, timebase
+should be @code{1 / frame_rate} and timestamp increments should be
+identically 1.
+
+@item g @var{integer} (@emph{encoding,video})
+Set the group of picture size. Default value is 12.
+
+@item ar @var{integer} (@emph{decoding/encoding,audio})
+Set audio sampling rate (in Hz).
+
+@item ac @var{integer} (@emph{decoding/encoding,audio})
+Set number of audio channels.
+
+@item cutoff @var{integer} (@emph{encoding,audio})
+Set cutoff bandwidth.
+
+@item frame_size @var{integer} (@emph{encoding,audio})
+Set audio frame size.
+
+Each submitted frame except the last must contain exactly frame_size
+samples per channel. May be 0 when the codec has
+CODEC_CAP_VARIABLE_FRAME_SIZE set, in that case the frame size is not
+restricted. It is set by some decoders to indicate constant frame
+size.
+
+@item frame_number @var{integer}
+Set the frame number.
+
+@item delay @var{integer}
+
+@item qcomp @var{float} (@emph{encoding,video})
+Set video quantizer scale compression (VBR). It is used as a constant
+in the ratecontrol equation. Recommended range for default rc_eq:
+0.0-1.0.
+
+@item qblur @var{float} (@emph{encoding,video})
+Set video quantizer scale blur (VBR).
+
+@item qmin @var{integer} (@emph{encoding,video})
+Set min video quantizer scale (VBR). Must be included between -1 and
+69, default value is 2.
+
+@item qmax @var{integer} (@emph{encoding,video})
+Set max video quantizer scale (VBR). Must be included between -1 and
+1024, default value is 31.
+
+@item qdiff @var{integer} (@emph{encoding,video})
+Set max difference between the quantizer scale (VBR).
+
+@item bf @var{integer} (@emph{encoding,video})
+Set max number of B frames.
+
+@item b_qfactor @var{float} (@emph{encoding,video})
+Set qp factor between P and B frames.
+
+@item rc_strategy @var{integer} (@emph{encoding,video})
+Set ratecontrol method.
+
+@item b_strategy @var{integer} (@emph{encoding,video})
+Set strategy to choose between I/P/B-frames.
+
+@item ps @var{integer} (@emph{encoding,video})
+Set RTP payload size in bytes.
+
+@item mv_bits @var{integer}
+@item header_bits @var{integer}
+@item i_tex_bits @var{integer}
+@item p_tex_bits @var{integer}
+@item i_count @var{integer}
+@item p_count @var{integer}
+@item skip_count @var{integer}
+@item misc_bits @var{integer}
+@item frame_bits @var{integer}
+@item codec_tag @var{integer}
+@item bug @var{flags} (@emph{decoding,video})
+Workaround not auto detected encoder bugs.
+
+Possible values:
+@table @samp
+@item autodetect
+
+@item old_msmpeg4
+some old lavc generated msmpeg4v3 files (no autodetection)
+@item xvid_ilace
+Xvid interlacing bug (autodetected if fourcc==XVIX)
+@item ump4
+(autodetected if fourcc==UMP4)
+@item no_padding
+padding bug (autodetected)
+@item amv
+
+@item ac_vlc
+illegal vlc bug (autodetected per fourcc)
+@item qpel_chroma
+
+@item std_qpel
+old standard qpel (autodetected per fourcc/version)
+@item qpel_chroma2
+
+@item direct_blocksize
+direct-qpel-blocksize bug (autodetected per fourcc/version)
+@item edge
+edge padding bug (autodetected per fourcc/version)
+@item hpel_chroma
+
+@item dc_clip
+
+@item ms
+Workaround various bugs in microsoft broken decoders.
+@item trunc
+trancated frames
+@end table
+
+@item lelim @var{integer} (@emph{encoding,video})
+Set single coefficient elimination threshold for luminance (negative
+values also consider DC coefficient).
+
+@item celim @var{integer} (@emph{encoding,video})
+Set single coefficient elimination threshold for chrominance (negative
+values also consider dc coefficient)
+
+@item strict @var{integer} (@emph{decoding/encoding,audio,video})
+Specify how strictly to follow the standards.
+
+Possible values:
+@table @samp
+@item very
+strictly conform to a older more strict version of the spec or reference software
+@item strict
+strictly conform to all the things in the spec no matter what consequences
+@item normal
+
+@item unofficial
+allow unofficial extensions
+@item experimental
+allow non standardized experimental things
+@end table
+
+@item b_qoffset @var{float} (@emph{encoding,video})
+Set QP offset between P and B frames.
+
+@item err_detect @var{flags} (@emph{decoding,audio,video})
+Set error detection flags.
+
+Possible values:
+@table @samp
+@item crccheck
+verify embedded CRCs
+@item bitstream
+detect bitstream specification deviations
+@item buffer
+detect improper bitstream length
+@item explode
+abort decoding on minor error detection
+@item careful
+consider things that violate the spec and have not been seen in the wild as errors
+@item compliant
+consider all spec non compliancies as errors
+@item aggressive
+consider things that a sane encoder should not do as an error
+@end table
+
+@item has_b_frames @var{integer}
+
+@item block_align @var{integer}
+
+@item mpeg_quant @var{integer} (@emph{encoding,video})
+Use MPEG quantizers instead of H.263.
+
+@item qsquish @var{float} (@emph{encoding,video})
+How to keep quantizer between qmin and qmax (0 = clip, 1 = use
+differentiable function).
+
+@item rc_qmod_amp @var{float} (@emph{encoding,video})
+Set experimental quantizer modulation.
+
+@item rc_qmod_freq @var{integer} (@emph{encoding,video})
+Set experimental quantizer modulation.
+
+@item rc_override_count @var{integer}
+
+@item rc_eq @var{string} (@emph{encoding,video})
+Set rate control equation. When computing the expression, besides the
+standard functions defined in the section 'Expression Evaluation', the
+following functions are available: bits2qp(bits), qp2bits(qp). Also
+the following constants are available: iTex pTex tex mv fCode iCount
+mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex
+avgTex.
+
+@item maxrate @var{integer} (@emph{encoding,audio,video})
+Set max bitrate tolerance (in bits/s). Requires bufsize to be set.
+
+@item minrate @var{integer} (@emph{encoding,audio,video})
+Set min bitrate tolerance (in bits/s). Most useful in setting up a CBR
+encode. It is of little use elsewise.
+
+@item bufsize @var{integer} (@emph{encoding,audio,video})
+Set ratecontrol buffer size (in bits).
+
+@item rc_buf_aggressivity @var{float} (@emph{encoding,video})
+Currently useless.
+
+@item i_qfactor @var{float} (@emph{encoding,video})
+Set QP factor between P and I frames.
+
+@item i_qoffset @var{float} (@emph{encoding,video})
+Set QP offset between P and I frames.
+
+@item rc_init_cplx @var{float} (@emph{encoding,video})
+Set initial complexity for 1-pass encoding.
+
+@item dct @var{integer} (@emph{encoding,video})
+Set DCT algorithm.
+
+Possible values:
+@table @samp
+@item auto
+autoselect a good one (default)
+@item fastint
+fast integer
+@item int
+accurate integer
+@item mmx
+
+@item altivec
+
+@item faan
+floating point AAN DCT
+@end table
+
+@item lumi_mask @var{float} (@emph{encoding,video})
+Compress bright areas stronger than medium ones.
+
+@item tcplx_mask @var{float} (@emph{encoding,video})
+Set temporal complexity masking.
+
+@item scplx_mask @var{float} (@emph{encoding,video})
+Set spatial complexity masking.
+
+@item p_mask @var{float} (@emph{encoding,video})
+Set inter masking.
+
+@item dark_mask @var{float} (@emph{encoding,video})
+Compress dark areas stronger than medium ones.
+
+@item idct @var{integer} (@emph{decoding/encoding,video})
+Select IDCT implementation.
+
+Possible values:
+@table @samp
+@item auto
+
+@item int
+
+@item simple
+
+@item simplemmx
+
+@item libmpeg2mmx
+
+@item mmi
+
+@item arm
+
+@item altivec
+
+@item sh4
+
+@item simplearm
+
+@item simplearmv5te
+
+@item simplearmv6
+
+@item simpleneon
+
+@item simplealpha
+
+@item h264
+
+@item vp3
+
+@item ipp
+
+@item xvidmmx
+
+@item faani
+floating point AAN IDCT
+@end table
+
+@item slice_count @var{integer}
+
+@item ec @var{flags} (@emph{decoding,video})
+Set error concealment strategy.
+
+Possible values:
+@table @samp
+@item guess_mvs
+iterative motion vector (MV) search (slow)
+@item deblock
+use strong deblock filter for damaged MBs
+@end table
+
+@item bits_per_coded_sample @var{integer}
+
+@item pred @var{integer} (@emph{encoding,video})
+Set prediction method.
+
+Possible values:
+@table @samp
+@item left
+
+@item plane
+
+@item median
+
+@end table
+
+@item aspect @var{rational number} (@emph{encoding,video})
+Set sample aspect ratio.
+
+@item debug @var{flags} (@emph{decoding/encoding,audio,video,subtitles})
+Print specific debug info.
+
+Possible values:
+@table @samp
+@item pict
+picture info
+@item rc
+rate control
+@item bitstream
+
+@item mb_type
+macroblock (MB) type
+@item qp
+per-block quantization parameter (QP)
+@item mv
+motion vector
+@item dct_coeff
+
+@item skip
+
+@item startcode
+
+@item pts
+
+@item er
+error recognition
+@item mmco
+memory management control operations (H.264)
+@item bugs
+
+@item vis_qp
+visualize quantization parameter (QP), lower QP are tinted greener
+@item vis_mb_type
+visualize block types
+@item buffers
+picture buffer allocations
+@item thread_ops
+threading operations
+@end table
+
+@item vismv @var{integer} (@emph{decoding,video})
+Visualize motion vectors (MVs).
+
+Possible values:
+@table @samp
+@item pf
+forward predicted MVs of P-frames
+@item bf
+forward predicted MVs of B-frames
+@item bb
+backward predicted MVs of B-frames
+@end table
+
+@item cmp @var{integer} (@emph{encoding,video})
+Set full pel me compare function.
+
+Possible values:
+@table @samp
+@item sad
+sum of absolute differences, fast (default)
+@item sse
+sum of squared errors
+@item satd
+sum of absolute Hadamard transformed differences
+@item dct
+sum of absolute DCT transformed differences
+@item psnr
+sum of squared quantization errors (avoid, low quality)
+@item bit
+number of bits needed for the block
+@item rd
+rate distortion optimal, slow
+@item zero
+0
+@item vsad
+sum of absolute vertical differences
+@item vsse
+sum of squared vertical differences
+@item nsse
+noise preserving sum of squared differences
+@item w53
+5/3 wavelet, only used in snow
+@item w97
+9/7 wavelet, only used in snow
+@item dctmax
+
+@item chroma
+
+@end table
+
+@item subcmp @var{integer} (@emph{encoding,video})
+Set sub pel me compare function.
+
+Possible values:
+@table @samp
+@item sad
+sum of absolute differences, fast (default)
+@item sse
+sum of squared errors
+@item satd
+sum of absolute Hadamard transformed differences
+@item dct
+sum of absolute DCT transformed differences
+@item psnr
+sum of squared quantization errors (avoid, low quality)
+@item bit
+number of bits needed for the block
+@item rd
+rate distortion optimal, slow
+@item zero
+0
+@item vsad
+sum of absolute vertical differences
+@item vsse
+sum of squared vertical differences
+@item nsse
+noise preserving sum of squared differences
+@item w53
+5/3 wavelet, only used in snow
+@item w97
+9/7 wavelet, only used in snow
+@item dctmax
+
+@item chroma
+
+@end table
+
+@item mbcmp @var{integer} (@emph{encoding,video})
+Set macroblock compare function.
+
+Possible values:
+@table @samp
+@item sad
+sum of absolute differences, fast (default)
+@item sse
+sum of squared errors
+@item satd
+sum of absolute Hadamard transformed differences
+@item dct
+sum of absolute DCT transformed differences
+@item psnr
+sum of squared quantization errors (avoid, low quality)
+@item bit
+number of bits needed for the block
+@item rd
+rate distortion optimal, slow
+@item zero
+0
+@item vsad
+sum of absolute vertical differences
+@item vsse
+sum of squared vertical differences
+@item nsse
+noise preserving sum of squared differences
+@item w53
+5/3 wavelet, only used in snow
+@item w97
+9/7 wavelet, only used in snow
+@item dctmax
+
+@item chroma
+
+@end table
+
+@item ildctcmp @var{integer} (@emph{encoding,video})
+Set interlaced dct compare function.
+
+Possible values:
+@table @samp
+@item sad
+sum of absolute differences, fast (default)
+@item sse
+sum of squared errors
+@item satd
+sum of absolute Hadamard transformed differences
+@item dct
+sum of absolute DCT transformed differences
+@item psnr
+sum of squared quantization errors (avoid, low quality)
+@item bit
+number of bits needed for the block
+@item rd
+rate distortion optimal, slow
+@item zero
+0
+@item vsad
+sum of absolute vertical differences
+@item vsse
+sum of squared vertical differences
+@item nsse
+noise preserving sum of squared differences
+@item w53
+5/3 wavelet, only used in snow
+@item w97
+9/7 wavelet, only used in snow
+@item dctmax
+
+@item chroma
+
+@end table
+
+@item dia_size @var{integer} (@emph{encoding,video})
+Set diamond type & size for motion estimation.
+
+@item last_pred @var{integer} (@emph{encoding,video})
+Set amount of motion predictors from the previous frame.
+
+@item preme @var{integer} (@emph{encoding,video})
+Set pre motion estimation.
+
+@item precmp @var{integer} (@emph{encoding,video})
+Set pre motion estimation compare function.
+
+Possible values:
+@table @samp
+@item sad
+sum of absolute differences, fast (default)
+@item sse
+sum of squared errors
+@item satd
+sum of absolute Hadamard transformed differences
+@item dct
+sum of absolute DCT transformed differences
+@item psnr
+sum of squared quantization errors (avoid, low quality)
+@item bit
+number of bits needed for the block
+@item rd
+rate distortion optimal, slow
+@item zero
+0
+@item vsad
+sum of absolute vertical differences
+@item vsse
+sum of squared vertical differences
+@item nsse
+noise preserving sum of squared differences
+@item w53
+5/3 wavelet, only used in snow
+@item w97
+9/7 wavelet, only used in snow
+@item dctmax
+
+@item chroma
+
+@end table
+
+@item pre_dia_size @var{integer} (@emph{encoding,video})
+Set diamond type & size for motion estimation pre-pass.
+
+@item subq @var{integer} (@emph{encoding,video})
+Set sub pel motion estimation quality.
+
+@item dtg_active_format @var{integer}
+
+@item me_range @var{integer} (@emph{encoding,video})
+Set limit motion vectors range (1023 for DivX player).
+
+@item ibias @var{integer} (@emph{encoding,video})
+Set intra quant bias.
+
+@item pbias @var{integer} (@emph{encoding,video})
+Set inter quant bias.
+
+@item color_table_id @var{integer}
+
+@item global_quality @var{integer} (@emph{encoding,audio,video})
+
+@item coder @var{integer} (@emph{encoding,video})
+
+Possible values:
+@table @samp
+@item vlc
+variable length coder / huffman coder
+@item ac
+arithmetic coder
+@item raw
+raw (no encoding)
+@item rle
+run-length coder
+@item deflate
+deflate-based coder
+@end table
+
+@item context @var{integer} (@emph{encoding,video})
+Set context model.
+
+@item slice_flags @var{integer}
+
+@item xvmc_acceleration @var{integer}
+
+@item mbd @var{integer} (@emph{encoding,video})
+Set macroblock decision algorithm (high quality mode).
+
+Possible values:
+@table @samp
+@item simple
+use mbcmp (default)
+@item bits
+use fewest bits
+@item rd
+use best rate distortion
+@end table
+
+@item stream_codec_tag @var{integer}
+
+@item sc_threshold @var{integer} (@emph{encoding,video})
+Set scene change threshold.
+
+@item lmin @var{integer} (@emph{encoding,video})
+Set min lagrange factor (VBR).
+
+@item lmax @var{integer} (@emph{encoding,video})
+Set max lagrange factor (VBR).
+
+@item nr @var{integer} (@emph{encoding,video})
+Set noise reduction.
+
+@item rc_init_occupancy @var{integer} (@emph{encoding,video})
+Set number of bits which should be loaded into the rc buffer before
+decoding starts.
+
+@item inter_threshold @var{integer} (@emph{encoding,video})
+
+@item flags2 @var{flags} (@emph{decoding/encoding,audio,video})
+
+Possible values:
+@table @samp
+@item fast
+allow non spec compliant speedup tricks
+@item sgop
+Deprecated, use mpegvideo private options instead
+@item noout
+skip bitstream encoding
+@item local_header
+place global headers at every keyframe instead of in extradata
+@item chunks
+Frame data might be split into multiple chunks
+@item showall
+Show all frames before the first keyframe
+@item skiprd
+Deprecated, use mpegvideo private options instead
+@end table
+
+@item error @var{integer} (@emph{encoding,video})
+
+@item qns @var{integer} (@emph{encoding,video})
+Deprecated, use mpegvideo private options instead.
+
+@item threads @var{integer} (@emph{decoding/encoding,video})
+
+Possible values:
+@table @samp
+@item auto
+detect a good number of threads
+@end table
+
+@item me_threshold @var{integer} (@emph{encoding,video})
+Set motion estimation threshold.
+
+@item mb_threshold @var{integer} (@emph{encoding,video})
+Set macroblock threshold.
+
+@item dc @var{integer} (@emph{encoding,video})
+Set intra_dc_precision.
+
+@item nssew @var{integer} (@emph{encoding,video})
+Set nsse weight.
+
+@item skip_top @var{integer} (@emph{decoding,video})
+Set number of macroblock rows at the top which are skipped.
+
+@item skip_bottom @var{integer} (@emph{decoding,video})
+Set number of macroblock rows at the bottom which are skipped.
+
+@item profile @var{integer} (@emph{encoding,audio,video})
+
+Possible values:
+@table @samp
+@item unknown
+
+@item aac_main
+
+@item aac_low
+
+@item aac_ssr
+
+@item aac_ltp
+
+@item aac_he
+
+@item aac_he_v2
+
+@item aac_ld
+
+@item aac_eld
+
+@item dts
+
+@item dts_es
+
+@item dts_96_24
+
+@item dts_hd_hra
+
+@item dts_hd_ma
+
+@end table
+
+@item level @var{integer} (@emph{encoding,audio,video})
+
+Possible values:
+@table @samp
+@item unknown
+
+@end table
+
+@item lowres @var{integer} (@emph{decoding,audio,video})
+Decode at 1= 1/2, 2=1/4, 3=1/8 resolutions.
+
+@item skip_threshold @var{integer} (@emph{encoding,video})
+Set frame skip threshold.
+
+@item skip_factor @var{integer} (@emph{encoding,video})
+Set frame skip factor.
+
+@item skip_exp @var{integer} (@emph{encoding,video})
+Set frame skip exponent.
+
+@item skipcmp @var{integer} (@emph{encoding,video})
+Set frame skip compare function.
+
+Possible values:
+@table @samp
+@item sad
+sum of absolute differences, fast (default)
+@item sse
+sum of squared errors
+@item satd
+sum of absolute Hadamard transformed differences
+@item dct
+sum of absolute DCT transformed differences
+@item psnr
+sum of squared quantization errors (avoid, low quality)
+@item bit
+number of bits needed for the block
+@item rd
+rate distortion optimal, slow
+@item zero
+0
+@item vsad
+sum of absolute vertical differences
+@item vsse
+sum of squared vertical differences
+@item nsse
+noise preserving sum of squared differences
+@item w53
+5/3 wavelet, only used in snow
+@item w97
+9/7 wavelet, only used in snow
+@item dctmax
+
+@item chroma
+
+@end table
+
+@item border_mask @var{float} (@emph{encoding,video})
+Increase the quantizer for macroblocks close to borders.
+
+@item mblmin @var{integer} (@emph{encoding,video})
+Set min macroblock lagrange factor (VBR).
+
+@item mblmax @var{integer} (@emph{encoding,video})
+Set max macroblock lagrange factor (VBR).
+
+@item mepc @var{integer} (@emph{encoding,video})
+Set motion estimation bitrate penalty compensation (1.0 = 256).
+
+@item skip_loop_filter @var{integer} (@emph{decoding,video})
+@item skip_idct        @var{integer} (@emph{decoding,video})
+@item skip_frame       @var{integer} (@emph{decoding,video})
+
+Make decoder discard processing depending on the frame type selected
+by the option value.
+
+@option{skip_loop_filter} skips frame loop filtering, @option{skip_idct}
+skips frame IDCT/dequantization, @option{skip_frame} skips decoding.
+
+Possible values:
+@table @samp
+@item none
+Discard no frame.
+
+@item default
+Discard useless frames like 0-sized frames.
+
+@item noref
+Discard all non-reference frames.
+
+@item bidir
+Discard all bidirectional frames.
+
+@item nokey
+Discard all frames excepts keyframes.
+
+@item all
+Discard all frames.
+@end table
+
+Default value is @samp{default}.
+
+@item bidir_refine @var{integer} (@emph{encoding,video})
+Refine the two motion vectors used in bidirectional macroblocks.
+
+@item brd_scale @var{integer} (@emph{encoding,video})
+Downscale frames for dynamic B-frame decision.
+
+@item keyint_min @var{integer} (@emph{encoding,video})
+Set minimum interval between IDR-frames.
+
+@item refs @var{integer} (@emph{encoding,video})
+Set reference frames to consider for motion compensation.
+
+@item chromaoffset @var{integer} (@emph{encoding,video})
+Set chroma qp offset from luma.
+
+@item trellis @var{integer} (@emph{encoding,audio,video})
+Set rate-distortion optimal quantization.
+
+@item sc_factor @var{integer} (@emph{encoding,video})
+Set value multiplied by qscale for each frame and added to
+scene_change_score.
+
+@item mv0_threshold @var{integer} (@emph{encoding,video})
+@item b_sensitivity @var{integer} (@emph{encoding,video})
+Adjust sensitivity of b_frame_strategy 1.
+
+@item compression_level @var{integer} (@emph{encoding,audio,video})
+@item min_prediction_order @var{integer} (@emph{encoding,audio})
+@item max_prediction_order @var{integer} (@emph{encoding,audio})
+@item timecode_frame_start @var{integer} (@emph{encoding,video})
+Set GOP timecode frame start number, in non drop frame format.
+
+@item request_channels @var{integer} (@emph{decoding,audio})
+Set desired number of audio channels.
+
+@item bits_per_raw_sample @var{integer}
+@item channel_layout @var{integer} (@emph{decoding/encoding,audio})
+
+Possible values:
+@table @samp
+@end table
+@item request_channel_layout @var{integer} (@emph{decoding,audio})
+
+Possible values:
+@table @samp
+@end table
+@item rc_max_vbv_use @var{float} (@emph{encoding,video})
+@item rc_min_vbv_use @var{float} (@emph{encoding,video})
+@item ticks_per_frame @var{integer} (@emph{decoding/encoding,audio,video})
+@item color_primaries @var{integer} (@emph{decoding/encoding,video})
+@item color_trc @var{integer} (@emph{decoding/encoding,video})
+@item colorspace @var{integer} (@emph{decoding/encoding,video})
+@item color_range @var{integer} (@emph{decoding/encoding,video})
+@item chroma_sample_location @var{integer} (@emph{decoding/encoding,video})
+
+@item log_level_offset @var{integer}
+Set the log level offset.
+
+@item slices @var{integer} (@emph{encoding,video})
+Number of slices, used in parallelized encoding.
+
+@item thread_type @var{flags} (@emph{decoding/encoding,video})
+Select multithreading type.
+
+Possible values:
+@table @samp
+@item slice
+
+@item frame
+
+@end table
+@item audio_service_type @var{integer} (@emph{encoding,audio})
+Set audio service type.
+
+Possible values:
+@table @samp
+@item ma
+Main Audio Service
+@item ef
+Effects
+@item vi
+Visually Impaired
+@item hi
+Hearing Impaired
+@item di
+Dialogue
+@item co
+Commentary
+@item em
+Emergency
+@item vo
+Voice Over
+@item ka
+Karaoke
+@end table
+
+@item request_sample_fmt @var{sample_fmt} (@emph{decoding,audio})
+Set sample format audio decoders should prefer. Default value is
+@code{none}.
+
+@item pkt_timebase @var{rational number}
+
+@item sub_charenc @var{encoding} (@emph{decoding,subtitles})
+Set the input subtitles character encoding.
+@end table
+
+@c man end CODEC OPTIONS
+
+@include decoders.texi
+@include encoders.texi
diff --git a/doc/ffmpeg-codecs.texi b/doc/ffmpeg-codecs.texi
index e97abe3768..6f8f5a34d9 100644
--- a/doc/ffmpeg-codecs.texi
+++ b/doc/ffmpeg-codecs.texi
@@ -17,1075 +17,7 @@ the libavcodec library.
 
 @c man end DESCRIPTION
 
-@chapter Codec Options
-@c man begin CODEC OPTIONS
-
-libavcodec provides some generic global options, which can be set on
-all the encoders and decoders. In addition each codec may support
-so-called private options, which are specific for a given codec.
-
-Sometimes, a global option may only affect a specific kind of codec,
-and may be unsensical or ignored by another, so you need to be aware
-of the meaning of the specified options. Also some options are
-meant only for decoding or encoding.
-
-Options may be set by specifying -@var{option} @var{value} in the
-FFmpeg tools, or by setting the value explicitly in the
-@code{AVCodecContext} options or using the @file{libavutil/opt.h} API
-for programmatic use.
-
-The list of supported options follow:
-
-@table @option
-@item b @var{integer} (@emph{encoding,audio,video})
-Set bitrate in bits/s. Default value is 200K.
-
-@item ab @var{integer} (@emph{encoding,audio})
-Set audio bitrate (in bits/s). Default value is 128K.
-
-@item bt @var{integer} (@emph{encoding,video})
-Set video bitrate tolerance (in bits/s). In 1-pass mode, bitrate
-tolerance specifies how far ratecontrol is willing to deviate from the
-target average bitrate value. This is not related to min/max
-bitrate. Lowering tolerance too much has an adverse effect on quality.
-
-@item flags @var{flags} (@emph{decoding/encoding,audio,video,subtitles})
-Set generic flags.
-
-Possible values:
-@table @samp
-@item mv4
-Use four motion vector by macroblock (mpeg4).
-@item qpel
-Use 1/4 pel motion compensation.
-@item loop
-Use loop filter.
-@item qscale
-Use fixed qscale.
-@item gmc
-Use gmc.
-@item mv0
-Always try a mb with mv=<0,0>.
-@item input_preserved
-
-@item pass1
-Use internal 2pass ratecontrol in first pass mode.
-@item pass2
-Use internal 2pass ratecontrol in second pass mode.
-@item gray
-Only decode/encode grayscale.
-@item emu_edge
-Do not draw edges.
-@item psnr
-Set error[?] variables during encoding.
-@item truncated
-
-@item naq
-Normalize adaptive quantization.
-@item ildct
-Use interlaced DCT.
-@item low_delay
-Force low delay.
-@item global_header
-Place global headers in extradata instead of every keyframe.
-@item bitexact
-Use only bitexact stuff (except (I)DCT).
-@item aic
-Apply H263 advanced intra coding / mpeg4 ac prediction.
-@item cbp
-Deprecated, use mpegvideo private options instead.
-@item qprd
-Deprecated, use mpegvideo private options instead.
-@item ilme
-Apply interlaced motion estimation.
-@item cgop
-Use closed gop.
-@end table
-
-@item sub_id @var{integer}
-Deprecated, currently unused.
-
-@item me_method @var{integer} (@emph{encoding,video})
-Set motion estimation method.
-
-Possible values:
-@table @samp
-@item zero
-zero motion estimation (fastest)
-@item full
-full motion estimation (slowest)
-@item epzs
-EPZS motion estimation (default)
-@item esa
-esa motion estimation (alias for full)
-@item tesa
-tesa motion estimation
-@item dia
-dia motion estimation (alias for epzs)
-@item log
-log motion estimation
-@item phods
-phods motion estimation
-@item x1
-X1 motion estimation
-@item hex
-hex motion estimation
-@item umh
-umh motion estimation
-@item iter
-iter motion estimation
-@end table
-
-@item extradata_size @var{integer}
-Set extradata size.
-
-@item time_base @var{rational number}
-Set codec time base.
-
-It is the fundamental unit of time (in seconds) in terms of which
-frame timestamps are represented. For fixed-fps content, timebase
-should be @code{1 / frame_rate} and timestamp increments should be
-identically 1.
-
-@item g @var{integer} (@emph{encoding,video})
-Set the group of picture size. Default value is 12.
-
-@item ar @var{integer} (@emph{decoding/encoding,audio})
-Set audio sampling rate (in Hz).
-
-@item ac @var{integer} (@emph{decoding/encoding,audio})
-Set number of audio channels.
-
-@item cutoff @var{integer} (@emph{encoding,audio})
-Set cutoff bandwidth.
-
-@item frame_size @var{integer} (@emph{encoding,audio})
-Set audio frame size.
-
-Each submitted frame except the last must contain exactly frame_size
-samples per channel. May be 0 when the codec has
-CODEC_CAP_VARIABLE_FRAME_SIZE set, in that case the frame size is not
-restricted. It is set by some decoders to indicate constant frame
-size.
-
-@item frame_number @var{integer}
-Set the frame number.
-
-@item delay @var{integer}
-
-@item qcomp @var{float} (@emph{encoding,video})
-Set video quantizer scale compression (VBR). It is used as a constant
-in the ratecontrol equation. Recommended range for default rc_eq:
-0.0-1.0.
-
-@item qblur @var{float} (@emph{encoding,video})
-Set video quantizer scale blur (VBR).
-
-@item qmin @var{integer} (@emph{encoding,video})
-Set min video quantizer scale (VBR). Must be included between -1 and
-69, default value is 2.
-
-@item qmax @var{integer} (@emph{encoding,video})
-Set max video quantizer scale (VBR). Must be included between -1 and
-1024, default value is 31.
-
-@item qdiff @var{integer} (@emph{encoding,video})
-Set max difference between the quantizer scale (VBR).
-
-@item bf @var{integer} (@emph{encoding,video})
-Set max number of B frames.
-
-@item b_qfactor @var{float} (@emph{encoding,video})
-Set qp factor between P and B frames.
-
-@item rc_strategy @var{integer} (@emph{encoding,video})
-Set ratecontrol method.
-
-@item b_strategy @var{integer} (@emph{encoding,video})
-Set strategy to choose between I/P/B-frames.
-
-@item ps @var{integer} (@emph{encoding,video})
-Set RTP payload size in bytes.
-
-@item mv_bits @var{integer}
-@item header_bits @var{integer}
-@item i_tex_bits @var{integer}
-@item p_tex_bits @var{integer}
-@item i_count @var{integer}
-@item p_count @var{integer}
-@item skip_count @var{integer}
-@item misc_bits @var{integer}
-@item frame_bits @var{integer}
-@item codec_tag @var{integer}
-@item bug @var{flags} (@emph{decoding,video})
-Workaround not auto detected encoder bugs.
-
-Possible values:
-@table @samp
-@item autodetect
-
-@item old_msmpeg4
-some old lavc generated msmpeg4v3 files (no autodetection)
-@item xvid_ilace
-Xvid interlacing bug (autodetected if fourcc==XVIX)
-@item ump4
-(autodetected if fourcc==UMP4)
-@item no_padding
-padding bug (autodetected)
-@item amv
-
-@item ac_vlc
-illegal vlc bug (autodetected per fourcc)
-@item qpel_chroma
-
-@item std_qpel
-old standard qpel (autodetected per fourcc/version)
-@item qpel_chroma2
-
-@item direct_blocksize
-direct-qpel-blocksize bug (autodetected per fourcc/version)
-@item edge
-edge padding bug (autodetected per fourcc/version)
-@item hpel_chroma
-
-@item dc_clip
-
-@item ms
-Workaround various bugs in microsoft broken decoders.
-@item trunc
-trancated frames
-@end table
-
-@item lelim @var{integer} (@emph{encoding,video})
-Set single coefficient elimination threshold for luminance (negative
-values also consider DC coefficient).
-
-@item celim @var{integer} (@emph{encoding,video})
-Set single coefficient elimination threshold for chrominance (negative
-values also consider dc coefficient)
-
-@item strict @var{integer} (@emph{decoding/encoding,audio,video})
-Specify how strictly to follow the standards.
-
-Possible values:
-@table @samp
-@item very
-strictly conform to a older more strict version of the spec or reference software
-@item strict
-strictly conform to all the things in the spec no matter what consequences
-@item normal
-
-@item unofficial
-allow unofficial extensions
-@item experimental
-allow non standardized experimental things
-@end table
-
-@item b_qoffset @var{float} (@emph{encoding,video})
-Set QP offset between P and B frames.
-
-@item err_detect @var{flags} (@emph{decoding,audio,video})
-Set error detection flags.
-
-Possible values:
-@table @samp
-@item crccheck
-verify embedded CRCs
-@item bitstream
-detect bitstream specification deviations
-@item buffer
-detect improper bitstream length
-@item explode
-abort decoding on minor error detection
-@item careful
-consider things that violate the spec and have not been seen in the wild as errors
-@item compliant
-consider all spec non compliancies as errors
-@item aggressive
-consider things that a sane encoder should not do as an error
-@end table
-
-@item has_b_frames @var{integer}
-
-@item block_align @var{integer}
-
-@item mpeg_quant @var{integer} (@emph{encoding,video})
-Use MPEG quantizers instead of H.263.
-
-@item qsquish @var{float} (@emph{encoding,video})
-How to keep quantizer between qmin and qmax (0 = clip, 1 = use
-differentiable function).
-
-@item rc_qmod_amp @var{float} (@emph{encoding,video})
-Set experimental quantizer modulation.
-
-@item rc_qmod_freq @var{integer} (@emph{encoding,video})
-Set experimental quantizer modulation.
-
-@item rc_override_count @var{integer}
-
-@item rc_eq @var{string} (@emph{encoding,video})
-Set rate control equation. When computing the expression, besides the
-standard functions defined in the section 'Expression Evaluation', the
-following functions are available: bits2qp(bits), qp2bits(qp). Also
-the following constants are available: iTex pTex tex mv fCode iCount
-mcVar var isI isP isB avgQP qComp avgIITex avgPITex avgPPTex avgBPTex
-avgTex.
-
-@item maxrate @var{integer} (@emph{encoding,audio,video})
-Set max bitrate tolerance (in bits/s). Requires bufsize to be set.
-
-@item minrate @var{integer} (@emph{encoding,audio,video})
-Set min bitrate tolerance (in bits/s). Most useful in setting up a CBR
-encode. It is of little use elsewise.
-
-@item bufsize @var{integer} (@emph{encoding,audio,video})
-Set ratecontrol buffer size (in bits).
-
-@item rc_buf_aggressivity @var{float} (@emph{encoding,video})
-Currently useless.
-
-@item i_qfactor @var{float} (@emph{encoding,video})
-Set QP factor between P and I frames.
-
-@item i_qoffset @var{float} (@emph{encoding,video})
-Set QP offset between P and I frames.
-
-@item rc_init_cplx @var{float} (@emph{encoding,video})
-Set initial complexity for 1-pass encoding.
-
-@item dct @var{integer} (@emph{encoding,video})
-Set DCT algorithm.
-
-Possible values:
-@table @samp
-@item auto
-autoselect a good one (default)
-@item fastint
-fast integer
-@item int
-accurate integer
-@item mmx
-
-@item altivec
-
-@item faan
-floating point AAN DCT
-@end table
-
-@item lumi_mask @var{float} (@emph{encoding,video})
-Compress bright areas stronger than medium ones.
-
-@item tcplx_mask @var{float} (@emph{encoding,video})
-Set temporal complexity masking.
-
-@item scplx_mask @var{float} (@emph{encoding,video})
-Set spatial complexity masking.
-
-@item p_mask @var{float} (@emph{encoding,video})
-Set inter masking.
-
-@item dark_mask @var{float} (@emph{encoding,video})
-Compress dark areas stronger than medium ones.
-
-@item idct @var{integer} (@emph{decoding/encoding,video})
-Select IDCT implementation.
-
-Possible values:
-@table @samp
-@item auto
-
-@item int
-
-@item simple
-
-@item simplemmx
-
-@item libmpeg2mmx
-
-@item mmi
-
-@item arm
-
-@item altivec
-
-@item sh4
-
-@item simplearm
-
-@item simplearmv5te
-
-@item simplearmv6
-
-@item simpleneon
-
-@item simplealpha
-
-@item h264
-
-@item vp3
-
-@item ipp
-
-@item xvidmmx
-
-@item faani
-floating point AAN IDCT
-@end table
-
-@item slice_count @var{integer}
-
-@item ec @var{flags} (@emph{decoding,video})
-Set error concealment strategy.
-
-Possible values:
-@table @samp
-@item guess_mvs
-iterative motion vector (MV) search (slow)
-@item deblock
-use strong deblock filter for damaged MBs
-@end table
-
-@item bits_per_coded_sample @var{integer}
-
-@item pred @var{integer} (@emph{encoding,video})
-Set prediction method.
-
-Possible values:
-@table @samp
-@item left
-
-@item plane
-
-@item median
-
-@end table
-
-@item aspect @var{rational number} (@emph{encoding,video})
-Set sample aspect ratio.
-
-@item debug @var{flags} (@emph{decoding/encoding,audio,video,subtitles})
-Print specific debug info.
-
-Possible values:
-@table @samp
-@item pict
-picture info
-@item rc
-rate control
-@item bitstream
-
-@item mb_type
-macroblock (MB) type
-@item qp
-per-block quantization parameter (QP)
-@item mv
-motion vector
-@item dct_coeff
-
-@item skip
-
-@item startcode
-
-@item pts
-
-@item er
-error recognition
-@item mmco
-memory management control operations (H.264)
-@item bugs
-
-@item vis_qp
-visualize quantization parameter (QP), lower QP are tinted greener
-@item vis_mb_type
-visualize block types
-@item buffers
-picture buffer allocations
-@item thread_ops
-threading operations
-@end table
-
-@item vismv @var{integer} (@emph{decoding,video})
-Visualize motion vectors (MVs).
-
-Possible values:
-@table @samp
-@item pf
-forward predicted MVs of P-frames
-@item bf
-forward predicted MVs of B-frames
-@item bb
-backward predicted MVs of B-frames
-@end table
-
-@item cmp @var{integer} (@emph{encoding,video})
-Set full pel me compare function.
-
-Possible values:
-@table @samp
-@item sad
-sum of absolute differences, fast (default)
-@item sse
-sum of squared errors
-@item satd
-sum of absolute Hadamard transformed differences
-@item dct
-sum of absolute DCT transformed differences
-@item psnr
-sum of squared quantization errors (avoid, low quality)
-@item bit
-number of bits needed for the block
-@item rd
-rate distortion optimal, slow
-@item zero
-0
-@item vsad
-sum of absolute vertical differences
-@item vsse
-sum of squared vertical differences
-@item nsse
-noise preserving sum of squared differences
-@item w53
-5/3 wavelet, only used in snow
-@item w97
-9/7 wavelet, only used in snow
-@item dctmax
-
-@item chroma
-
-@end table
-
-@item subcmp @var{integer} (@emph{encoding,video})
-Set sub pel me compare function.
-
-Possible values:
-@table @samp
-@item sad
-sum of absolute differences, fast (default)
-@item sse
-sum of squared errors
-@item satd
-sum of absolute Hadamard transformed differences
-@item dct
-sum of absolute DCT transformed differences
-@item psnr
-sum of squared quantization errors (avoid, low quality)
-@item bit
-number of bits needed for the block
-@item rd
-rate distortion optimal, slow
-@item zero
-0
-@item vsad
-sum of absolute vertical differences
-@item vsse
-sum of squared vertical differences
-@item nsse
-noise preserving sum of squared differences
-@item w53
-5/3 wavelet, only used in snow
-@item w97
-9/7 wavelet, only used in snow
-@item dctmax
-
-@item chroma
-
-@end table
-
-@item mbcmp @var{integer} (@emph{encoding,video})
-Set macroblock compare function.
-
-Possible values:
-@table @samp
-@item sad
-sum of absolute differences, fast (default)
-@item sse
-sum of squared errors
-@item satd
-sum of absolute Hadamard transformed differences
-@item dct
-sum of absolute DCT transformed differences
-@item psnr
-sum of squared quantization errors (avoid, low quality)
-@item bit
-number of bits needed for the block
-@item rd
-rate distortion optimal, slow
-@item zero
-0
-@item vsad
-sum of absolute vertical differences
-@item vsse
-sum of squared vertical differences
-@item nsse
-noise preserving sum of squared differences
-@item w53
-5/3 wavelet, only used in snow
-@item w97
-9/7 wavelet, only used in snow
-@item dctmax
-
-@item chroma
-
-@end table
-
-@item ildctcmp @var{integer} (@emph{encoding,video})
-Set interlaced dct compare function.
-
-Possible values:
-@table @samp
-@item sad
-sum of absolute differences, fast (default)
-@item sse
-sum of squared errors
-@item satd
-sum of absolute Hadamard transformed differences
-@item dct
-sum of absolute DCT transformed differences
-@item psnr
-sum of squared quantization errors (avoid, low quality)
-@item bit
-number of bits needed for the block
-@item rd
-rate distortion optimal, slow
-@item zero
-0
-@item vsad
-sum of absolute vertical differences
-@item vsse
-sum of squared vertical differences
-@item nsse
-noise preserving sum of squared differences
-@item w53
-5/3 wavelet, only used in snow
-@item w97
-9/7 wavelet, only used in snow
-@item dctmax
-
-@item chroma
-
-@end table
-
-@item dia_size @var{integer} (@emph{encoding,video})
-Set diamond type & size for motion estimation.
-
-@item last_pred @var{integer} (@emph{encoding,video})
-Set amount of motion predictors from the previous frame.
-
-@item preme @var{integer} (@emph{encoding,video})
-Set pre motion estimation.
-
-@item precmp @var{integer} (@emph{encoding,video})
-Set pre motion estimation compare function.
-
-Possible values:
-@table @samp
-@item sad
-sum of absolute differences, fast (default)
-@item sse
-sum of squared errors
-@item satd
-sum of absolute Hadamard transformed differences
-@item dct
-sum of absolute DCT transformed differences
-@item psnr
-sum of squared quantization errors (avoid, low quality)
-@item bit
-number of bits needed for the block
-@item rd
-rate distortion optimal, slow
-@item zero
-0
-@item vsad
-sum of absolute vertical differences
-@item vsse
-sum of squared vertical differences
-@item nsse
-noise preserving sum of squared differences
-@item w53
-5/3 wavelet, only used in snow
-@item w97
-9/7 wavelet, only used in snow
-@item dctmax
-
-@item chroma
-
-@end table
-
-@item pre_dia_size @var{integer} (@emph{encoding,video})
-Set diamond type & size for motion estimation pre-pass.
-
-@item subq @var{integer} (@emph{encoding,video})
-Set sub pel motion estimation quality.
-
-@item dtg_active_format @var{integer}
-
-@item me_range @var{integer} (@emph{encoding,video})
-Set limit motion vectors range (1023 for DivX player).
-
-@item ibias @var{integer} (@emph{encoding,video})
-Set intra quant bias.
-
-@item pbias @var{integer} (@emph{encoding,video})
-Set inter quant bias.
-
-@item color_table_id @var{integer}
-
-@item global_quality @var{integer} (@emph{encoding,audio,video})
-
-@item coder @var{integer} (@emph{encoding,video})
-
-Possible values:
-@table @samp
-@item vlc
-variable length coder / huffman coder
-@item ac
-arithmetic coder
-@item raw
-raw (no encoding)
-@item rle
-run-length coder
-@item deflate
-deflate-based coder
-@end table
-
-@item context @var{integer} (@emph{encoding,video})
-Set context model.
-
-@item slice_flags @var{integer}
-
-@item xvmc_acceleration @var{integer}
-
-@item mbd @var{integer} (@emph{encoding,video})
-Set macroblock decision algorithm (high quality mode).
-
-Possible values:
-@table @samp
-@item simple
-use mbcmp (default)
-@item bits
-use fewest bits
-@item rd
-use best rate distortion
-@end table
-
-@item stream_codec_tag @var{integer}
-
-@item sc_threshold @var{integer} (@emph{encoding,video})
-Set scene change threshold.
-
-@item lmin @var{integer} (@emph{encoding,video})
-Set min lagrange factor (VBR).
-
-@item lmax @var{integer} (@emph{encoding,video})
-Set max lagrange factor (VBR).
-
-@item nr @var{integer} (@emph{encoding,video})
-Set noise reduction.
-
-@item rc_init_occupancy @var{integer} (@emph{encoding,video})
-Set number of bits which should be loaded into the rc buffer before
-decoding starts.
-
-@item inter_threshold @var{integer} (@emph{encoding,video})
-
-@item flags2 @var{flags} (@emph{decoding/encoding,audio,video})
-
-Possible values:
-@table @samp
-@item fast
-allow non spec compliant speedup tricks
-@item sgop
-Deprecated, use mpegvideo private options instead
-@item noout
-skip bitstream encoding
-@item local_header
-place global headers at every keyframe instead of in extradata
-@item chunks
-Frame data might be split into multiple chunks
-@item showall
-Show all frames before the first keyframe
-@item skiprd
-Deprecated, use mpegvideo private options instead
-@end table
-
-@item error @var{integer} (@emph{encoding,video})
-
-@item qns @var{integer} (@emph{encoding,video})
-Deprecated, use mpegvideo private options instead.
-
-@item threads @var{integer} (@emph{decoding/encoding,video})
-
-Possible values:
-@table @samp
-@item auto
-detect a good number of threads
-@end table
-
-@item me_threshold @var{integer} (@emph{encoding,video})
-Set motion estimation threshold.
-
-@item mb_threshold @var{integer} (@emph{encoding,video})
-Set macroblock threshold.
-
-@item dc @var{integer} (@emph{encoding,video})
-Set intra_dc_precision.
-
-@item nssew @var{integer} (@emph{encoding,video})
-Set nsse weight.
-
-@item skip_top @var{integer} (@emph{decoding,video})
-Set number of macroblock rows at the top which are skipped.
-
-@item skip_bottom @var{integer} (@emph{decoding,video})
-Set number of macroblock rows at the bottom which are skipped.
-
-@item profile @var{integer} (@emph{encoding,audio,video})
-
-Possible values:
-@table @samp
-@item unknown
-
-@item aac_main
-
-@item aac_low
-
-@item aac_ssr
-
-@item aac_ltp
-
-@item aac_he
-
-@item aac_he_v2
-
-@item aac_ld
-
-@item aac_eld
-
-@item dts
-
-@item dts_es
-
-@item dts_96_24
-
-@item dts_hd_hra
-
-@item dts_hd_ma
-
-@end table
-
-@item level @var{integer} (@emph{encoding,audio,video})
-
-Possible values:
-@table @samp
-@item unknown
-
-@end table
-
-@item lowres @var{integer} (@emph{decoding,audio,video})
-Decode at 1= 1/2, 2=1/4, 3=1/8 resolutions.
-
-@item skip_threshold @var{integer} (@emph{encoding,video})
-Set frame skip threshold.
-
-@item skip_factor @var{integer} (@emph{encoding,video})
-Set frame skip factor.
-
-@item skip_exp @var{integer} (@emph{encoding,video})
-Set frame skip exponent.
-
-@item skipcmp @var{integer} (@emph{encoding,video})
-Set frame skip compare function.
-
-Possible values:
-@table @samp
-@item sad
-sum of absolute differences, fast (default)
-@item sse
-sum of squared errors
-@item satd
-sum of absolute Hadamard transformed differences
-@item dct
-sum of absolute DCT transformed differences
-@item psnr
-sum of squared quantization errors (avoid, low quality)
-@item bit
-number of bits needed for the block
-@item rd
-rate distortion optimal, slow
-@item zero
-0
-@item vsad
-sum of absolute vertical differences
-@item vsse
-sum of squared vertical differences
-@item nsse
-noise preserving sum of squared differences
-@item w53
-5/3 wavelet, only used in snow
-@item w97
-9/7 wavelet, only used in snow
-@item dctmax
-
-@item chroma
-
-@end table
-
-@item border_mask @var{float} (@emph{encoding,video})
-Increase the quantizer for macroblocks close to borders.
-
-@item mblmin @var{integer} (@emph{encoding,video})
-Set min macroblock lagrange factor (VBR).
-
-@item mblmax @var{integer} (@emph{encoding,video})
-Set max macroblock lagrange factor (VBR).
-
-@item mepc @var{integer} (@emph{encoding,video})
-Set motion estimation bitrate penalty compensation (1.0 = 256).
-
-@item skip_loop_filter @var{integer} (@emph{decoding,video})
-@item skip_idct        @var{integer} (@emph{decoding,video})
-@item skip_frame       @var{integer} (@emph{decoding,video})
-
-Make decoder discard processing depending on the frame type selected
-by the option value.
-
-@option{skip_loop_filter} skips frame loop filtering, @option{skip_idct}
-skips frame IDCT/dequantization, @option{skip_frame} skips decoding.
-
-Possible values:
-@table @samp
-@item none
-Discard no frame.
-
-@item default
-Discard useless frames like 0-sized frames.
-
-@item noref
-Discard all non-reference frames.
-
-@item bidir
-Discard all bidirectional frames.
-
-@item nokey
-Discard all frames excepts keyframes.
-
-@item all
-Discard all frames.
-@end table
-
-Default value is @samp{default}.
-
-@item bidir_refine @var{integer} (@emph{encoding,video})
-Refine the two motion vectors used in bidirectional macroblocks.
-
-@item brd_scale @var{integer} (@emph{encoding,video})
-Downscale frames for dynamic B-frame decision.
-
-@item keyint_min @var{integer} (@emph{encoding,video})
-Set minimum interval between IDR-frames.
-
-@item refs @var{integer} (@emph{encoding,video})
-Set reference frames to consider for motion compensation.
-
-@item chromaoffset @var{integer} (@emph{encoding,video})
-Set chroma qp offset from luma.
-
-@item trellis @var{integer} (@emph{encoding,audio,video})
-Set rate-distortion optimal quantization.
-
-@item sc_factor @var{integer} (@emph{encoding,video})
-Set value multiplied by qscale for each frame and added to
-scene_change_score.
-
-@item mv0_threshold @var{integer} (@emph{encoding,video})
-@item b_sensitivity @var{integer} (@emph{encoding,video})
-Adjust sensitivity of b_frame_strategy 1.
-
-@item compression_level @var{integer} (@emph{encoding,audio,video})
-@item min_prediction_order @var{integer} (@emph{encoding,audio})
-@item max_prediction_order @var{integer} (@emph{encoding,audio})
-@item timecode_frame_start @var{integer} (@emph{encoding,video})
-Set GOP timecode frame start number, in non drop frame format.
-
-@item request_channels @var{integer} (@emph{decoding,audio})
-Set desired number of audio channels.
-
-@item bits_per_raw_sample @var{integer}
-@item channel_layout @var{integer} (@emph{decoding/encoding,audio})
-
-Possible values:
-@table @samp
-@end table
-@item request_channel_layout @var{integer} (@emph{decoding,audio})
-
-Possible values:
-@table @samp
-@end table
-@item rc_max_vbv_use @var{float} (@emph{encoding,video})
-@item rc_min_vbv_use @var{float} (@emph{encoding,video})
-@item ticks_per_frame @var{integer} (@emph{decoding/encoding,audio,video})
-@item color_primaries @var{integer} (@emph{decoding/encoding,video})
-@item color_trc @var{integer} (@emph{decoding/encoding,video})
-@item colorspace @var{integer} (@emph{decoding/encoding,video})
-@item color_range @var{integer} (@emph{decoding/encoding,video})
-@item chroma_sample_location @var{integer} (@emph{decoding/encoding,video})
-
-@item log_level_offset @var{integer}
-Set the log level offset.
-
-@item slices @var{integer} (@emph{encoding,video})
-Number of slices, used in parallelized encoding.
-
-@item thread_type @var{flags} (@emph{decoding/encoding,video})
-Select multithreading type.
-
-Possible values:
-@table @samp
-@item slice
-
-@item frame
-
-@end table
-@item audio_service_type @var{integer} (@emph{encoding,audio})
-Set audio service type.
-
-Possible values:
-@table @samp
-@item ma
-Main Audio Service
-@item ef
-Effects
-@item vi
-Visually Impaired
-@item hi
-Hearing Impaired
-@item di
-Dialogue
-@item co
-Commentary
-@item em
-Emergency
-@item vo
-Voice Over
-@item ka
-Karaoke
-@end table
-
-@item request_sample_fmt @var{sample_fmt} (@emph{decoding,audio})
-Set sample format audio decoders should prefer. Default value is
-@code{none}.
-
-@item pkt_timebase @var{rational number}
-
-@item sub_charenc @var{encoding} (@emph{decoding,subtitles})
-Set the input subtitles character encoding.
-@end table
-
-@c man end CODEC OPTIONS
-
-@include decoders.texi
-@include encoders.texi
+@include codecs.texi
 
 @chapter See Also