generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

lavc: extend documentation for skip_idct, skip_loop_filter, skip_frame options

Browse Source
This commit is contained in:
Stefano Sabatini 2013-03-10 16:15:48 +01:00
parent 1019cef329
commit 92ca292766
3 changed files with 27 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
doc/ffmpeg-codecs.texi
View File

@ -944,59 +944,38 @@ Set max macroblock lagrange factor (VBR).
Set motion estimation bitrate penalty compensation (1.0 = 256). Set motion estimation bitrate penalty compensation (1.0 = 256).
@item skip_loop_filter @var{integer} (@emph{decoding,video}) @item skip_loop_filter @var{integer} (@emph{decoding,video})
Possible values:
@table @samp
@item none
@item default
@item noref
@item bidir
@item nokey
@item all
@end table
@item skip_idct @var{integer} (@emph{decoding,video}) @item skip_idct @var{integer} (@emph{decoding,video})
Possible values:
@table @samp
@item none
@item default
@item noref
@item bidir
@item nokey
@item all
@end table
@item skip_frame @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: Possible values:
@table @samp @table @samp
@item none @item none
Discard no frame.
@item default @item default
Discard useless frames like 0-sized frames.
@item noref @item noref
Discard all non-reference frames.
@item bidir @item bidir
Discard all bidirectional frames.
@item nokey @item nokey
Discard all frames excepts keyframes.
@item all @item all
Discard all frames.
@end table @end table
Default value is @samp{default}.
@item bidir_refine @var{integer} (@emph{encoding,video}) @item bidir_refine @var{integer} (@emph{encoding,video})
Refine the two motion vectors used in bidirectional macroblocks. Refine the two motion vectors used in bidirectional macroblocks.

6
libavcodec/avcodec.h
View File

@ -2728,21 +2728,21 @@ typedef struct AVCodecContext {
#define FF_LEVEL_UNKNOWN -99 #define FF_LEVEL_UNKNOWN -99
/** /**
* * Skip loop filtering for selected frames.
* - encoding: unused * - encoding: unused
* - decoding: Set by user. * - decoding: Set by user.
*/ */
enum AVDiscard skip_loop_filter; enum AVDiscard skip_loop_filter;
/** /**
* * Skip IDCT/dequantization for selected frames.
* - encoding: unused * - encoding: unused
* - decoding: Set by user. * - decoding: Set by user.
*/ */
enum AVDiscard skip_idct; enum AVDiscard skip_idct;
/** /**
* * Skip decoding for selected frames.
* - encoding: unused * - encoding: unused
* - decoding: Set by user. * - decoding: Set by user.
*/ */

18
libavcodec/options_table.h
View File

@ -327,15 +327,15 @@ static const AVOption options[]={
{"mblmin", "minimum macroblock Lagrange factor (VBR)", OFFSET(mb_lmin), AV_OPT_TYPE_INT, {.i64 = FF_QP2LAMBDA * 2 }, 1, FF_LAMBDA_MAX, V|E}, {"mblmin", "minimum macroblock Lagrange factor (VBR)", OFFSET(mb_lmin), AV_OPT_TYPE_INT, {.i64 = FF_QP2LAMBDA * 2 }, 1, FF_LAMBDA_MAX, V|E},
{"mblmax", "maximum macroblock Lagrange factor (VBR)", OFFSET(mb_lmax), AV_OPT_TYPE_INT, {.i64 = FF_QP2LAMBDA * 31 }, 1, FF_LAMBDA_MAX, V|E}, {"mblmax", "maximum macroblock Lagrange factor (VBR)", OFFSET(mb_lmax), AV_OPT_TYPE_INT, {.i64 = FF_QP2LAMBDA * 31 }, 1, FF_LAMBDA_MAX, V|E},
{"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), AV_OPT_TYPE_INT, {.i64 = 256 }, INT_MIN, INT_MAX, V|E}, {"mepc", "motion estimation bitrate penalty compensation (1.0 = 256)", OFFSET(me_penalty_compensation), AV_OPT_TYPE_INT, {.i64 = 256 }, INT_MIN, INT_MAX, V|E},
{"skip_loop_filter", NULL, OFFSET(skip_loop_filter), AV_OPT_TYPE_INT, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"}, {"skip_loop_filter", "skip loop filtering process for the selected frames", OFFSET(skip_loop_filter), AV_OPT_TYPE_INT, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},
{"skip_idct" , NULL, OFFSET(skip_idct) , AV_OPT_TYPE_INT, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"}, {"skip_idct" , "skip IDCT/dequantization for the selected frames", OFFSET(skip_idct), AV_OPT_TYPE_INT, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},
{"skip_frame" , NULL, OFFSET(skip_frame) , AV_OPT_TYPE_INT, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"}, {"skip_frame" , "skip decoding for the selected frames", OFFSET(skip_frame), AV_OPT_TYPE_INT, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},
{"none" , NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONE }, INT_MIN, INT_MAX, V|D, "avdiscard"}, {"none" , "discard no frame", 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONE }, INT_MIN, INT_MAX, V|D, "avdiscard"},
{"default" , NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"}, {"default" , "discard useless frames", 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_DEFAULT }, INT_MIN, INT_MAX, V|D, "avdiscard"},
{"noref" , NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONREF }, INT_MIN, INT_MAX, V|D, "avdiscard"}, {"noref" , "discard all non-reference frames", 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONREF }, INT_MIN, INT_MAX, V|D, "avdiscard"},
{"bidir" , NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_BIDIR }, INT_MIN, INT_MAX, V|D, "avdiscard"}, {"bidir" , "discard all bidirectional frames", 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_BIDIR }, INT_MIN, INT_MAX, V|D, "avdiscard"},
{"nokey" , NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONKEY }, INT_MIN, INT_MAX, V|D, "avdiscard"}, {"nokey" , "discard all frames except keyframes", 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_NONKEY }, INT_MIN, INT_MAX, V|D, "avdiscard"},
{"all" , NULL, 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_ALL }, INT_MIN, INT_MAX, V|D, "avdiscard"}, {"all" , "discard all frames", 0, AV_OPT_TYPE_CONST, {.i64 = AVDISCARD_ALL }, INT_MIN, INT_MAX, V|D, "avdiscard"},
{"bidir_refine", "refine the two motion vectors used in bidirectional macroblocks", OFFSET(bidir_refine), AV_OPT_TYPE_INT, {.i64 = 1 }, 0, 4, V|E}, {"bidir_refine", "refine the two motion vectors used in bidirectional macroblocks", OFFSET(bidir_refine), AV_OPT_TYPE_INT, {.i64 = 1 }, 0, 4, V|E},
{"brd_scale", "downscale frames for dynamic B-frame decision", OFFSET(brd_scale), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, 10, V|E}, {"brd_scale", "downscale frames for dynamic B-frame decision", OFFSET(brd_scale), AV_OPT_TYPE_INT, {.i64 = DEFAULT }, 0, 10, V|E},
{"keyint_min", "minimum interval between IDR-frames", OFFSET(keyint_min), AV_OPT_TYPE_INT, {.i64 = 25 }, INT_MIN, INT_MAX, V|E}, {"keyint_min", "minimum interval between IDR-frames", OFFSET(keyint_min), AV_OPT_TYPE_INT, {.i64 = 25 }, INT_MIN, INT_MAX, V|E},