Commit Graph

139 Commits

Author SHA1 Message Date
Clément Bœsch
7c1a002c78 subtitles: introduce ASS codec id and use it.
Currently, we have a AV_CODEC_ID_SSA, which matches the way the ASS/SSA
markup is muxed in a standalone .ass/.ssa file. This means the AVPacket
data starts with a "Dialogue:" string, followed by a timing information
(start and end of the event as string) and a trailing CRLF after each
line. One packet can contain several lines. We'll refer to this layout
as "SSA" or "SSA lines".

In matroska, this markup is not stored as such: it has no "Dialogue:"
prefix, it contains a ReadOrder field, the timing information is not in
the payload, and it doesn't contain the trailing CRLF. See [1] for more
info. We'll refer to this layout as "ASS".

Since we have only one common codec for both formats, the matroska
demuxer is constructing an AVPacket following the "SSA lines" format.
This causes several problems, so it was decided to change this into
clean ASS packets.

Some insight about what is changed or unchanged in this commit:

  CODECS
  ------

  - the decoding process still writes "SSA lines" markup inside the ass
    fields of the subtitles rectangles (sub->rects[n]->ass), which is
    still the current common way of representing decoded subtitles
    markup. It is meant to change later.

  - new ASS codec id: AV_CODEC_ID_ASS (which is different from the
    legacy AV_CODEC_ID_SSA)

  - lavc/assdec: the "ass" decoder is renamed into "ssa" (instead of
    "ass") for consistency with the codec id and allows to add a real
    ass decoder. This ass decoder receives clean ASS lines (so it starts
    with a ReadOrder, is followed by the Layer, etc). We make sure this
    is decoded properly in a new ass-line rectangle of the decoded
    subtitles (the ssa decoder OTOH is doing a simple straightforward
    copy). Using the packet timing instead of data string makes sure the
    ass-line now contains the appropriate timing.

  - lavc/assenc: just like the ass decoder, the "ssa" encoder is renamed
    into "ssa" (instead of "ass") for consistency with the codec id, and
    allows to add a real "ass" encoder.

    One important thing about this encoder is that it only supports one
    ass rectangle: we could have put several dialogue events in the
    AVPacket (separated by a \0 for instance) but this would have cause
    trouble for the muxer which needs not only the start time, but also
    the duration: typically, you have merged events with the same start
    time (stored in the AVPacket->pts) but a different duration. At the
    moment, only the matroska do the merge with the SSA-line codec.

    We will need to make sure all the decoders in the future can't add
    more than one rectangle (and only one Dialogue line in it
    obviously).

  FORMATS
  -------

  - lavf/assenc: the .ass/.ssa muxer can take both SSA and ASS packets.
    In the case of ASS packets as input, it adds the timing based on the
    AVPacket pts and duration, and mux it with "Dialogue:", trailing
    CRLF, etc.

  - lavf/assdec: unchanged; it currently still only outputs SSA-lines
    packets.

  - lavf/mkv: the demuxer can now output ASS packets without the need of
    any "SSA-lines" reconstruction hack. It will become the default at
    next libavformat bump, and the SSA support will be dropped from the
    demuxer. The muxer can take ASS packets since it's muxed normally,
    and still supports the old SSA packets. All the SSA support and
    hacks in Matroska code will be dropped at next lavf bump.

[1]: http://www.matroska.org/technical/specs/subtitles/ssa.html
2013-04-18 23:23:59 +02:00
Andrea3000
8d8c59480e matroska: fix missing ,
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2013-02-21 22:24:26 +01:00
Allan Kristensen
4789c25d83 matroska: fixed missing S_DVBSUB subtitles 2013-02-01 01:49:04 +01:00
Carl Eugen Hoyos
df39c3ce38 matroskaenc: add codec_tag lists back.
This reverts 312645e :
"Do not set codec_tag property for matroska muxers."

Also adds dummy codec_tag lists with codecs
supported in mkv but not in wav / avi.

Fixes ticket #2169.
2013-01-24 01:22:07 +01:00
Nicolas George
0942aa4637 lafv/matroska: add A_OPUS/EXPERIMENTAL codec name.
The exact packing of Opus inside Matroska is not finalized.
Use A_OPUS/EXPERIMENTAL as codec name, like mkvtoolnix.
The A_OPUS name stays to let ffmpeg open files it has produced
until now, but newly produced file use the EXPERIMENTAL version.
Once the spec is stabilized it will be possible to consider
options to ensure compatibility with these files.
2013-01-16 15:53:01 +01:00
Michael Niedermayer
353dbaa297 Merge commit '3f111804eb5c603a344706b84b7164cbf7b4e0df'
* commit '3f111804eb5c603a344706b84b7164cbf7b4e0df':
  libvpx: make vp8 and vp9 selectable
  libvpx: support vp9
  nut: support vp9 tag
  mkv: support vp9 tag
  rtpdec: Make variables that should wrap unsigned

Conflicts:
	configure
	libavcodec/Makefile
	libavcodec/allcodecs.c
	libavcodec/avcodec.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-01-15 14:57:57 +01:00
Tom Finegan
66aabd76a9 mkv: support vp9 tag 2013-01-14 19:20:47 +01:00
Diego Biurrun
a0c5917f86 Drop Snow codec
Snow is a toy codec with no real-world use and horrible code.
2013-01-06 16:30:02 +01:00
Michael Niedermayer
b8044972c4 Merge commit '117d8c6d1f1c187ffc6098d9618457e00534e013'
* commit '117d8c6d1f1c187ffc6098d9618457e00534e013':
  matroska: implement support for ProRes
  matroska: implement support for ALAC

Conflicts:
	libavformat/matroskaenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-09-20 19:43:38 +02:00
Luca Barbato
117d8c6d1f matroska: implement support for ProRes
Support Matroska native formatting.

On demuxing prepend a Frame container atom (32bit big endian encoded
frame size and 'icpf' string).
On muxing remove it.
2012-09-19 20:34:14 +02:00
Moritz Bunkus
8071dca3d5 matroska: implement support for ALAC
Support Matroska native formatting.

On demuxing reconstruct the 36-bytes QuickTime atom that the ALAC
decoder expects by prepending the "atom size", "tag" and
"tag version" fields missing from the Matroska's CodecPrivate
element.

On muxing remove the initial 12 bytes

Sample files are available:
http://www.bunkus.org/videotools/mkvtoolnix/samples/alac/alac-in-matroska.mka
and the CoreAudio file it was created from with today's mkvmerge:
http://www.bunkus.org/videotools/mkvtoolnix/samples/alac/alac-in-matroska-source.caf

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2012-09-19 20:34:14 +02:00
Clément Bœsch
ca81e3b6e7 lavf/mkv: prefix video stereo arrays with ff_. 2012-09-16 02:58:40 +02:00
Sébastien Brochet
e14725cecc add OTF support for attachments
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-09-10 17:08:18 +02:00
Philip Langdale
2626cc4580 matroska: Mark S_TEXT/UTF-8 as Subrip encoded subtitles.
While not explicitly stated in the specs, the original author
has stated that S_TEXT/UTF-8 is expected to be text using Subrip
markup, but without Subrip in-band timing.

So, now that we have a decoder that conforms to this expectation,
let's use it.

Note that this change will impact tools that use libavformat. If
they expect srt subtitles to have CODEC_ID_TEXT, they must be
adjusted to expect CODEC_ID_SUBRIP. The actual content is, obviously,
unchanged.

Signed-off-by: Philip Langdale <philipl@overt.org>
2012-08-25 13:15:41 -07:00
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
Moritz Bunkus
bc3b422029 matroskadec: Implement support for ALAC
This patch implements support reading ALAC from Matroska files. The
only non-trivial thing about it is that only the ALAC magic cookie is
stored in Matroska's CodecPrivate element but not the "atom size",
"tag" and "tag version" fields that FFMPEG's ALAC decoder
expects. However, those are trivial to re-create.

Sample files are available:
http://www.bunkus.org/videotools/mkvtoolnix/samples/alac/alac-in-matroska.mka
and the CoreAudio file it was created from with today's mkvmerge:
http://www.bunkus.org/videotools/mkvtoolnix/samples/alac/alac-in-matroska-source.caf

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-05 17:59:12 +02:00
Nicolas George
30549294ef matroska: add support for Opus.
Opus in Matroska is still a draft.
2012-07-20 11:19:01 +02:00
Aurelien Jacobs
09525f7956 matroska: improve declaration of video_stereo_* constant tables 2011-05-24 23:34:24 +02:00
Aurelien Jacobs
4c509fe305 matroska: cleanup handling of video stereo mode 2011-05-24 01:12:19 +02:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-19 13:33:20 +00:00
Aurelien Jacobs
2701fd40f9 matroskaenc: add support for muxing SRT tracks
Originally committed as revision 24503 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-07-25 21:16:58 +00:00
Google
23966972ab matroska: Add V_VP8
Patch by Google

Originally committed as revision 23192 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-05-19 16:50:06 +00:00
Aurelien Jacobs
6b10228a55 matroskadec: add support for SIPR audio tracks
Originally committed as revision 22492 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-03-12 23:49:06 +00:00
Anton Khirnov
ca76a11948 Add a list of generic tags and change demuxers to follow it.
Patch by Anton Khirnov, wyskas at gmail dot com

Originally committed as revision 21587 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-02-01 11:39:10 +00:00
Carl Eugen Hoyos
39c6b3f54c Support demuxing Blu-ray subtitles in matroska files.
Patch sent to mailing list by Taylor Ralph, taylor D ralph A gmail

Originally committed as revision 21491 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-01-27 22:39:18 +00:00
Aurelien Jacobs
b89894abb7 matroska: add support for MLP and TRUEHD codec tags
Originally committed as revision 18254 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-30 21:37:04 +00:00
Aurelien Jacobs
719e721a14 Add some basic metadata conversion tables for matroska and asf.
Add missing const qualifiers for metadata_conv in AV{In|Out}putFormat.

Originally committed as revision 17671 to svn://svn.ffmpeg.org/ffmpeg/trunk
2009-03-01 00:12:08 +00:00
Aurelien Jacobs
737dccfc1d matroska: sort codec tags list
Originally committed as revision 16081 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-12 16:04:15 +00:00
Kurtnoise
ea2a5dec33 matroska: add dirac support (patch by Kurtnoise kurtnoise _at_ free _dot_ fr)
Originally committed as revision 16080 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-12-12 15:55:08 +00:00
Aurelien Jacobs
23cdcb22a3 matroska: add E-AC-3 support
Thanks again Justin !

Originally committed as revision 15146 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-09-01 15:50:12 +00:00
Aurelien Jacobs
eb9cf50a74 matroska: add support for most variants of PCM
Originally committed as revision 14862 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-20 00:49:45 +00:00
Aurelien Jacobs
20fb02c5b9 matroskadec: remove useless comments in ff_mkv_codec_tags
Originally committed as revision 14606 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-05 00:42:46 +00:00
Aurelien Jacobs
d3d265b288 matroska: add support for A_QUICKTIME/QDM2 codec
Originally committed as revision 14430 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-07-27 15:12:00 +00:00
Evgeniy Stepanov
f8d7c9d373 Add support for Matroska attachments.
patch by eugeni _dot_ stepanov _at_ gmail.com and myself

Originally committed as revision 11635 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-27 15:43:17 +00:00
Aurelien Jacobs
4f632b065b Make ff_mkv_codec_tags lie entirely in .rodata section.
From: Diego 'Flameeyes' Pettenò < flameeyes _at_ gmail _dot_ com >

Originally committed as revision 11440 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-01-07 00:03:19 +00:00
Evgeniy Stepanov
f9a9b3509c export raw SSA tracks with their own codec ID (patch by Evgeniy Stepanov)
Originally committed as revision 11352 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-29 20:49:03 +00:00
Reimar Döffinger
73a727f369 Make ff_mkv_codec_tags array const, it is never written.
Originally committed as revision 11137 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-12-02 21:52:43 +00:00
David Conrad
c3ce416105 Use V_MPEG4/ISO/ASP for mpeg4 when muxing mkv
Originally committed as revision 10421 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-09-06 05:14:09 +00:00
David Conrad
b75c8d16e7 Add V_SNOW
Originally committed as revision 10200 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-08-24 00:49:46 +00:00
Aurelien Jacobs
868e43d952 use the most appropriate codec id for A_MPEG/L1 and L2
Originally committed as revision 9794 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-25 15:59:26 +00:00
Aurelien Jacobs
0f40b54c17 reorder matroska codec tags so that the encoder picks up the appropriate tag
Originally committed as revision 9793 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-25 15:58:12 +00:00
Aurelien Jacobs
ee8c87b55b add support for S_ASS and S_SSA codec string
Originally committed as revision 9704 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-16 14:51:43 +00:00
Aurelien Jacobs
979c091056 add support for ASS like subtitles in Matroska
Originally committed as revision 9593 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-11 13:37:07 +00:00
Aurelien Jacobs
f7e97aaf87 add support for Matroska subtitle tracks
Originally committed as revision 9591 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-07-11 13:13:20 +00:00
Aurelien Jacobs
eabb8ba445 add support for real audio in matroska
Originally committed as revision 9217 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-06-04 22:19:17 +00:00
David Conrad
b061d892ed split some common code from the mkv demuxer that will be useful to the muxer
patch by David Conrad  umovimus _at_ gmail.com

Originally committed as revision 9215 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-06-04 22:10:54 +00:00
Aurelien Jacobs
57004ff1d7 add an enum for need_parsing
Originally committed as revision 8742 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-04-15 13:51:57 +00:00
Aurelien Jacobs
7fdcdf25a1 cosmetics: indentation
Originally committed as revision 8707 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-04-10 11:27:24 +00:00
Aurelien Jacobs
6207bb209e add support for seeking to a keyframe instead of a random frame
Originally committed as revision 8698 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-04-09 17:03:20 +00:00