[gstreamer-bugs] [Bug 330634] Flash Video (FLV) support in 0.10

[GStreamer (bugzilla.gnome.org)]

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 GStreamer | gst-ffmpeg | Ver: 0.10.0


Edward Hervey changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |bilboed at bilboed.com
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1




------- Comment #1 from Edward Hervey  2006-02-10 10:25 UTC -------
We haven't wrapped the ffmpeg demuxers in gst-ffmpeg 0.10.x . I guess that
would be a start.

As for flv video, the encoder/decoder seems to be wrapped... but it has a bogus
mimetype (video/x-gst_ff-flv) because we haven't got round to deciding on a
gstreamer mimetype for flash video.

SO what needs to be done is:
1. Decide on a mimetype for the flv container format AND the flv video stream
2. Add a typefind function for flv container format
3. Wrap the ffmpeg demuxers in gst-ffmpeg
4. implement the proper mimetypes in gst-ffmpeg (ffmpegcodecmap.[ch])
5. implement the proper mimetypes in all muxers and demuxers (with proper
fourcc <==> mimetype conversion functions)

Easy to do (or done):
1. the mimetype for flv container format is video/x-flv and is already
implemented in gst-ffmpeg. As for the flv video stream, there isn't a known
mimetype for it (which makes sense since it's a format which needs to be
packetized). I'd go for "video/x-flash-video,flvversion=1", the version is
because there might be a new format at one point (see [1]).
2. Should be rather easy. See "File Type Signifiers" in [1]
4. CODEC_ID_FLV1 <==> "video/x-flash-video,flvversion=1"
5.
For avi it should be implement in the riff library
(gst-plugins-base/gst-libs/gst/riff/) using the "FLV1" fourcc.
For matroska, it uses the riff library too, since there's no specific codec id
defined for FLV and therefore uses the V_MS/VFW/FOURCC codecic (see [2])
I don't see any other (de)muxer that needs that...

[1] http://www.digitalpreservation.gov/formats/fdd/fdd000131.shtml
[2] http://www.matroska.org/technical/specs/codecid/index.html


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