Commit Graph

113 Commits

Author SHA1 Message Date
Michael Niedermayer
ac293b6685 Merge commit '194be1f43ea391eb986732707435176e579265aa'
* commit '194be1f43ea391eb986732707435176e579265aa':
  lavf: switch to AVStream.time_base as the hint for the muxer timebase

Conflicts:
	doc/APIchanges
	libavformat/filmstripenc.c
	libavformat/movenc.c
	libavformat/mxfenc.c
	libavformat/oggenc.c
	libavformat/swf.h
	libavformat/version.h
	tests/ref/lavf/mkv

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-06-18 19:49:17 +02:00
Anton Khirnov
194be1f43e lavf: switch to AVStream.time_base as the hint for the muxer timebase
Previously, AVStream.codec.time_base was used for that purpose, which
was quite confusing for the callers. This change also opens the path for
removing AVStream.codec.

The change in the lavf-mkv test is due to the native timebase (1/1000)
being used instead of the default one (1/90000), so the packets are now
sent to the crc muxer in the same order in which they are demuxed
(previously some of them got reordered because of inexact timestamp
conversion).
2014-06-18 15:12:34 +02:00
Martin Storsjö
103243ca64 oggenc: Set the right AVOption size for the pref_duration option
On big endian machines, the default value set via the faulty
AVOption ended up as 2^32 times too big.

This fixes the fate-lavf-ogg test which currently is broken on
big endian machines, broken since 3831362. Since that commit,
a final zero-sized packet is written to the ogg muxer in that test,
which caused different flushing behaviour on little and big endian
depending on whether the pref_duration option was handled as it
should or not.

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
2014-06-06 19:22:14 +03:00
Michael Niedermayer
c7e54628e3 Merge commit '95b7fa1729b93bbb3f4fb85a5c0cb53cf970c3c7'
* commit '95b7fa1729b93bbb3f4fb85a5c0cb53cf970c3c7':
  oggenc: Support flushing the muxer

Conflicts:
	libavformat/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-06-04 12:54:15 +02:00
Martin Storsjö
95b7fa1729 oggenc: Support flushing the muxer
This allows the caller to write all buffered data to disk, allowing
the caller to know at what byte position in the file a certain
packet starts (any packet written after the flush will be located
after that byte position).

Signed-off-by: Martin Storsjö <martin@martin.st>
2014-06-04 12:21:10 +03:00
Michael Niedermayer
7dba055bb0 oggenc: Fix the EOS flag
This corrects the bug that caused the checksums to change in
9767d7c092.

It caused the EOS flag to be set incorrectly; the ogg spec does not
allow it to be set in the middle of a logical bitstream.

Signed-off-by: Andrew Kelley <superjoe30@gmail.com>
Signed-off-by: Martin Storsjö <martin@martin.st>
2014-05-28 21:51:38 +03:00
Michael Niedermayer
dff4aa6afd Merge commit 'efcde917af407a6031ecff68edd51fce7b83d104'
* commit 'efcde917af407a6031ecff68edd51fce7b83d104':
  vorbiscomment: simplify API by using av_dict_count()

Conflicts:
	libavformat/flacenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-05-28 13:08:50 +02:00
Anton Khirnov
efcde917af vorbiscomment: simplify API by using av_dict_count() 2014-05-28 07:54:54 +02:00
Michael Niedermayer
919c320f72 avformat/oggenc: fix EOS flag
This corrects the bug that caused the checksums to change in
9767d7c092

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-05-28 01:12:18 +02:00
Michael Niedermayer
b5657516b2 Merge commit '9767d7c092c890ecc5953452e8a951fd902dd67b'
* commit '9767d7c092c890ecc5953452e8a951fd902dd67b':
  oggenc: Flush after writing headers

Conflicts:
	tests/ref/lavf/ogg

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-05-28 01:00:10 +02:00
Michael Niedermayer
5313d60dc0 Merge commit '1d3eb0b5735f6dd72d2bf648455cf06ac7c24bc1'
* commit '1d3eb0b5735f6dd72d2bf648455cf06ac7c24bc1':
  oggenc: Move ogg_write_pages up above ogg_write_header

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-05-28 00:28:08 +02:00
Andrew Kelley
9767d7c092 oggenc: Flush after writing headers
Before, header information for ogg format files was sent with the
first encoded packet.

This patch makes it so that it is possible for API users to
differentiate between headers and encoded audio. This is useful, for
example, when creating an audio stream where you want to send one set
of headers for every client that connects and then the encoded stream
of audio.

Signed-off-by: Martin Storsjö <martin@martin.st>
2014-05-27 20:16:59 +03:00
Andrew Kelley
1d3eb0b573 oggenc: Move ogg_write_pages up above ogg_write_header
Signed-off-by: Martin Storsjö <martin@martin.st>
2014-05-27 20:16:58 +03:00
Michael Niedermayer
eacf7d650d Merge commit '0c1959b056f6ccaa2eee2c824352ba93c8e36d52'
* commit '0c1959b056f6ccaa2eee2c824352ba93c8e36d52':
  lavf: add AVFMT_FLAG_BITEXACT.

Conflicts:
	doc/APIchanges
	libavformat/avformat.h
	libavformat/flacenc.c
	libavformat/movenc.c
	libavformat/oggenc.c
	libavformat/options_table.h
	libavformat/version.h
	tests/fate/video.mak

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-05-15 19:16:57 +02:00
Anton Khirnov
0c1959b056 lavf: add AVFMT_FLAG_BITEXACT.
Use it instead of checking CODEC_FLAG_BITEXACT in the first stream's
codec context.

Using codec options inside lavf is fragile and can easily break when the
muxing codec context is not the encoding context.
2014-05-15 07:42:07 +02:00
James Almer
0f62982335 oggenc: check return value of av_mallocz()
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-04-04 15:56:52 +02:00
Carl Eugen Hoyos
0816abae1e Add an .oga muxer. 2014-03-25 15:47:55 +01:00
Michael Niedermayer
cf0e5b7fd4 Merge commit 'b0c2c097e422b9e10a7d856582f8321d28af821e'
* commit 'b0c2c097e422b9e10a7d856582f8321d28af821e':
  lavf: default .ogg audio to libvorbis if we can

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-02-09 20:04:01 +01:00
Andrew Kelley
b0c2c097e4 lavf: default .ogg audio to libvorbis if we can
Since 2007, the Xiph.org Foundation recommends that .ogg only be used
for Ogg Vorbis audio files.

Source: http://wiki.xiph.org/index.php/MIME_Types_and_File_Extensions

However we only do it if we have libvorbis available because the
built in vorbis encoder is not as good.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
2014-02-09 18:36:15 +01:00
Carl Eugen Hoyos
2ccc6ff03a Add an Opus and a Speex muxer.
Fixes ticket #3181.
2013-12-01 12:03:34 +01:00
Michael Niedermayer
ccdfa3e271 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  Add missing #includes for *INT64_MAX and *INT64_C

Conflicts:
	ffmpeg.c
	ffmpeg_filter.c
	ffplay.c
	libavformat/assdec.c
	libavformat/avidec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-11-24 05:21:19 +01:00
Diego Biurrun
8f8bc92365 Add missing #includes for *INT64_MAX and *INT64_C 2013-11-23 21:55:52 +01:00
Michael Niedermayer
49515cb840 avformat: remove duplicate includes
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-09-21 15:36:33 +02:00
James Almer
ac8e70d735 oggenc: Write stream metadata if available
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-07-28 21:10:51 +02:00
Michael Niedermayer
c4bf740225 Merge commit 'c2cb01d418dd18e1cf997c038d37378d773121be'
* commit 'c2cb01d418dd18e1cf997c038d37378d773121be':
  lavf: introduce AVFMT_TS_NEGATIVE

Conflicts:
	libavformat/avformat.h
	libavformat/mux.c
	tests/ref/lavf/asf
	tests/ref/lavf/mkv
	tests/ref/lavf/mpg
	tests/ref/lavf/ts
	tests/ref/seek/lavf-asf
	tests/ref/seek/lavf-mkv
	tests/ref/seek/lavf-mpg
	tests/ref/seek/lavf-ts

This commit does not change the default ts behaviour, such
change will, if its done, be done separately.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-04-26 10:59:45 +02:00
Luca Barbato
c2cb01d418 lavf: introduce AVFMT_TS_NEGATIVE
Most formats do not support negative timestamps, shift them to avoid
unexpected behaviour and a number of bad crashes.

CC:libav-stable@libav.org

Signed-off-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2013-04-25 10:13:27 +02:00
Michael Niedermayer
536baf6cc5 oggenc: Fix pref_duration AVOption type
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-04-13 20:30:03 +02:00
Michael Niedermayer
036b9ee1c9 oggenc: fix "oggstream may be used uninitialized in this function" warning
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-29 15:57:42 +01:00
Michael Niedermayer
4765f63538 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  xan: Convert to bytestream2
  oggenc: add a page_duration option and deprecate the pagesize option
  x86: lavr: add SSE2/AVX dither_int_to_float()

Conflicts:
	libavcodec/xan.c
	libavformat/oggenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-09 12:30:14 +01:00
Justin Ruggles
59220d559b oggenc: add a page_duration option and deprecate the pagesize option
This uses page duration instead of byte size to determine when to buffer
the page. Also, it tries to avoid continued pages by buffering the current
page if there are already packets in the page and adding the next packet
would require it to be continued on a new page. This can improve seeking
performance.

The default page duration is 1 second, which is much saner than filling
all page segments by default.
2013-01-08 15:42:36 -05:00
Michael Niedermayer
a147c1b2b1 oggenc: remove unneeded null check.
The code would have segfaulted before if it where null

Fixes CID732218
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-11-05 00:28:21 +01:00
Michael Niedermayer
40ceb6d49f libavformat/oggenc: add {} to complex ifs
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-10-21 18:05:23 +02:00
Michael Niedermayer
7ed9ec033f Merge remote-tracking branch 'qatar/master'
* qatar/master:
  dwt: Drop unused functions spatial_compose{53|97}i()
  nutdec: Remove unused and broken debug function stub
  avcodec: Drop long-deprecated imgconvert.h header
  Add Opus support to the Ogg muxer.
  Add Opus codec id and codec description.
  avformat: Identify anonymous AVIO typedef structs.

Conflicts:
	libavcodec/avcodec.h
	libavcodec/codec_desc.c
	libavcodec/imgconvert.h
	libavcodec/version.h
	libavformat/oggenc.c
	libavformat/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-09-28 05:11:19 +02:00
Nathan Caldwell
bcc1f7caeb Add Opus support to the Ogg muxer.
Signed-off-by: Diego Biurrun <diego@biurrun.de>
2012-09-27 10:48:35 +02:00
Michael Niedermayer
d46c1c72e4 Merge commit 'e6153f173a49e5bfa70b0c04d2f82930533597b9'
* commit 'e6153f173a49e5bfa70b0c04d2f82930533597b9':
  avopt: Store defaults for AV_OPT_TYPE_INT in the i64 union member

Conflicts:
	libavcodec/libopenjpegdec.c
	libavcodec/libopenjpegenc.c
	libavcodec/libx264.c
	libavcodec/mpeg12enc.c
	libavcodec/options_table.h
	libavcodec/snowenc.c
	libavcodec/tiffenc.c
	libavdevice/v4l2.c
	libavdevice/x11grab.c
	libavfilter/af_amix.c
	libavfilter/af_asyncts.c
	libavfilter/af_join.c
	libavfilter/buffersrc.c
	libavfilter/src_movie.c
	libavfilter/vf_delogo.c
	libavfilter/vf_drawtext.c
	libavformat/http.c
	libavformat/img2dec.c
	libavformat/img2enc.c
	libavformat/movenc.c
	libavformat/mpegenc.c
	libavformat/mpegtsenc.c
	libavformat/options_table.h
	libavformat/segment.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-09-05 14:33:32 +02:00
Martin Storsjö
e6153f173a avopt: Store defaults for AV_OPT_TYPE_INT in the i64 union member
Signed-off-by: Martin Storsjö <martin@martin.st>
2012-09-04 23:13:44 +03:00
Michael Niedermayer
7a72695c05 Merge commit '36ef5369ee9b336febc2c270f8718cec4476cb85'
* commit '36ef5369ee9b336febc2c270f8718cec4476cb85':
  Replace all CODEC_ID_* with AV_CODEC_ID_*
  lavc: add AV prefix to codec ids.

Conflicts:
	doc/APIchanges
	doc/examples/decoding_encoding.c
	doc/examples/muxing.c
	ffmpeg.c
	ffprobe.c
	ffserver.c
	libavcodec/8svx.c
	libavcodec/avcodec.h
	libavcodec/dnxhd_parser.c
	libavcodec/dvdsubdec.c
	libavcodec/error_resilience.c
	libavcodec/h263dec.c
	libavcodec/libvorbisenc.c
	libavcodec/mjpeg_parser.c
	libavcodec/mjpegenc.c
	libavcodec/mpeg12.c
	libavcodec/mpeg4videodec.c
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo_enc.c
	libavcodec/pcm.c
	libavcodec/r210dec.c
	libavcodec/utils.c
	libavcodec/v210dec.c
	libavcodec/version.h
	libavdevice/alsa-audio-dec.c
	libavdevice/bktr.c
	libavdevice/v4l2.c
	libavformat/asfdec.c
	libavformat/asfenc.c
	libavformat/avformat.h
	libavformat/avidec.c
	libavformat/caf.c
	libavformat/electronicarts.c
	libavformat/flacdec.c
	libavformat/flvdec.c
	libavformat/flvenc.c
	libavformat/framecrcenc.c
	libavformat/img2.c
	libavformat/img2dec.c
	libavformat/img2enc.c
	libavformat/ipmovie.c
	libavformat/isom.c
	libavformat/matroska.c
	libavformat/matroskadec.c
	libavformat/matroskaenc.c
	libavformat/mov.c
	libavformat/movenc.c
	libavformat/mp3dec.c
	libavformat/mpeg.c
	libavformat/mpegts.c
	libavformat/mxf.c
	libavformat/mxfdec.c
	libavformat/mxfenc.c
	libavformat/nsvdec.c
	libavformat/nut.c
	libavformat/oggenc.c
	libavformat/pmpdec.c
	libavformat/rawdec.c
	libavformat/rawenc.c
	libavformat/riff.c
	libavformat/sdp.c
	libavformat/utils.c
	libavformat/vocenc.c
	libavformat/wtv.c
	libavformat/xmv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-07 22:45:46 +02:00
Anton Khirnov
36ef5369ee Replace all CODEC_ID_* with AV_CODEC_ID_* 2012-08-07 16:00:24 +02:00
Michael Niedermayer
2f7bd3b516 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  apedec: check bits <= 32.
  cavs: Remove unused code.
  oggenc: fix condition when not to flush due to keyframe granule.
  oggenc: add pagesize option to set preferred page size
  libspeexdec: set frame size in libspeex_decode_init()
  smacker audio: sign-extend the initial 16-bit predicted value

Conflicts:
	libavcodec/apedec.c
	libavcodec/libspeexdec.c
	libavformat/oggenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-04-01 00:36:43 +02:00
Reimar Döffinger
10b1c060f9 oggenc: fix condition when not to flush due to keyframe granule.
The previous condition of 0 page size was wrong,
that would disable the mechanism for all frames at
a start of a page, thus some keyframes still would not
get their own granule.
The real problem is that header packets must not be flushed,
but they have (and must have) 0 granule and thus would
be detected as keyframes.
Add a separate parameter to mark header packets.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
2012-03-30 16:32:16 -04:00
Andres Gonzalez
ed3e1b485a oggenc: add pagesize option to set preferred page size
When set, if an Ogg stream buffer has enough data, a page is made
instead of filling maximum-size pages. Using smaller pages results
smaller seek intervals at the expense of higher container overhead.

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
2012-03-30 16:32:03 -04:00
Michael Niedermayer
b008ac18bb Merge remote-tracking branch 'qatar/master'
* qatar/master:
  docs: use -bsf:[vas] instead of -[vas]bsf.
  mpegaudiodec: Prevent premature clipping of mp3 input buffer.
  lavf: move the packet keyframe setting code.
  oggenc: free comment header for all codecs
  lcl: error out if uncompressed input buffer is smaller than framesize.
  mjpeg: abort decoding if packet is too large.
  golomb: use HAVE_BITS_REMAINING() macro to prevent infloop on EOF.
  get_bits: add HAVE_BITS_REMAINING macro.
  lavf/output-example: use new audio encoding API correctly.
  lavf/output-example: more proper usage of the new API.
  tiff: Prevent overreads in the type_sizes array.
  tiff: Make the TIFF_LONG and TIFF_SHORT types unsigned.
  apetag: do not leak memory if avio_read() fails
  apetag: propagate errors.
  SBR DSP x86: implement SSE sbr_hf_g_filt
  SBR DSP x86: implement SSE sbr_sum_square_sse
  SBR DSP: use intptr_t for the ixh parameter.

Conflicts:
	doc/bitstream_filters.texi
	doc/examples/muxing.c
	doc/ffmpeg.texi
	libavcodec/golomb.h
	libavcodec/x86/Makefile
	libavformat/oggenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-02-25 04:00:43 +01:00
Justin Ruggles
9677247b0a oggenc: free comment header for all codecs
fixes a memleak for Vorbis and Theora, where the comment header from
avpriv_split_xiph_headers() is replaced by a buffer that must be freed
separately.
2012-02-24 13:15:41 -05:00
Reimar Döffinger
76cc0992d8 oggenc: fix condition when not to flush due to keyframe granule.
The previous condition of 0 page size was wrong,
that would disable the mechanism for all frames at
a start of a page, thus some keyframes still would not
get their own granule.
The real problem is that header packets must not be flushed,
but they have (and must have) 0 granule and thus would
be detected as keyframes.
Add a separate parameter to mark header packets.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
2012-02-18 21:35:49 +01:00
Reimar Döffinger
ff92549195 Fix Theora-in-ogg keyframe handling.
To make seeking work correctly, we must write a new granule for
each keyframe.
Unfortunately we currently have no regression tests due to no
included Theora encoder.
A test based on -vcodec copy from a Theora FATE sample should
probably be added.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
2012-02-12 18:56:06 +01:00
Michael Niedermayer
9d76cf0b18 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  rtpdec: Templatize the code for different g726 bitrate variants
  rv40: move loop filter to rv34dsp context
  lavf: make av_set_pts_info private.
  rtpdec: Add support for G726 audio
  rtpdec: Add an init function that can do custom codec context initialization
  avconv: make copy_tb on by default.
  matroskadec: don't set codec timebase.
  rmdec: don't set codec timebase.
  avconv: compute next_pts from input packet duration when possible.
  lavf: estimate frame duration from r_frame_rate.
  avconv: update InputStream.pts in the streamcopy case.

Conflicts:
	avconv.c
	libavdevice/alsa-audio-dec.c
	libavdevice/bktr.c
	libavdevice/fbdev.c
	libavdevice/libdc1394.c
	libavdevice/oss_audio.c
	libavdevice/v4l.c
	libavdevice/v4l2.c
	libavdevice/vfwcap.c
	libavdevice/x11grab.c
	libavformat/au.c
	libavformat/eacdata.c
	libavformat/flvdec.c
	libavformat/mpegts.c
	libavformat/mxfenc.c
	libavformat/rtpdec_g726.c
	libavformat/wtv.c
	libavformat/xmv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-12-01 02:54:24 +01:00
Anton Khirnov
c3f9ebf743 lavf: make av_set_pts_info private.
It's supposed to be called only from (de)muxers.
2011-11-30 20:34:45 +01:00
Diego Biurrun
c6cd0e17f3 Replace vendor string in Ogg and FLAC muxers. 2011-11-02 10:43:39 +01:00
Michael Niedermayer
dd8ffc1925 Merge remote-tracking branch 'qatar/master'
* qatar/master: (47 commits)
  lavc: hide private symbols.
  lavc: deprecate img_get_alpha_info().
  lavc: use avpriv_ prefix for ff_toupper4.
  lavc: use avpriv_ prefix for ff_copy_bits and align_put_bits.
  lavc: use avpriv_ prefix for ff_ac3_parse_header.
  lavc: use avpriv_ prefix for ff_frame_rate_tab.
  lavc: rename ff_find_start_code to avpriv_mpv_find_start_code
  lavc: use avpriv_ prefix for ff_split_xiph_headers.
  lavc: use avpriv_ prefix for ff_dirac_parse_sequence_header.
  lavc: use avpriv_ prefix for some dv symbols used in lavf.
  lavc: use avpriv_ prefix for some flac symbols used in lavf.
  lavc: use avpriv_ prefix for some mpeg4audio symbols used in lavf.
  lavc: use avpriv_ prefix for some mpegaudio symbols used in lavf.
  lavc: use avpriv_ prefix for ff_aac_parse_header().
  lavf: hide private symbols.
  lavf: use avpriv_ prefix for some dv functions.
  lavf: use avpriv_ prefix for ff_new_chapter().
  avcodec: add CODEC_CAP_DELAY note to avcodec_decode_audio3() documentation
  avcodec: clarify the CODEC_CAP_DELAY note in avcodec_decode_video2()
  avcodec: clarify documentation of CODEC_CAP_DELAY
  ...

Conflicts:
	configure
	doc/general.texi
	libavcodec/Makefile
	libavcodec/aacdec.c
	libavcodec/allcodecs.c
	libavcodec/avcodec.h
	libavcodec/dv.c
	libavcodec/dvdata.c
	libavcodec/dvdata.h
	libavcodec/libspeexenc.c
	libavcodec/mpegvideo.c
	libavcodec/version.h
	libavformat/avidec.c
	libavformat/dv.c
	libavformat/dv.h
	libavformat/flvenc.c
	libavformat/mov.c
	libavformat/mp3enc.c
	libavformat/oggparsespeex.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-10-21 02:01:26 +02:00
Anton Khirnov
357db4c263 lavc: use avpriv_ prefix for ff_split_xiph_headers.
It's used in lavf.
2011-10-20 21:06:58 +02:00