[FFmpeg-trac] #1869(avformat:open): Decode raw v210 streams

FFmpeg trac at avcodec.org
Tue Oct 30 02:30:09 CET 2012

#1869: Decode raw v210 streams
             Reporter:  ximmortal    |                    Owner:
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  v210         |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |

Comment (by cehoyos):

 Replying to [comment:5 ximmortal]:
 > Replying to [comment:4 cehoyos]:
 > The sample is the same format created by HD-SDI capture hardware
 produced by BlackMagic and DeltaCast framebuffer configured for V210.

 Do the cards provide single frames or continuous streams?
 The reason I ask is: Is there a software (or hardware) that provides the
 stream as you uploaded it or did you concatenate the frames?

 > This format is the same as described by Apple:

 And usually Apple formats are muxed in mov, or does QuickTime support the
 stream you uploaded?

 > https://developer.apple.com/quicktime/icefloe/dispatch019.html
 > What is the V210 format that ffmpeg is expecting?

 The v210 decoder expects exactly the format you uploaded (you can test by
 changing the frame size in the rawvideo demuxer to the value you posted
 originally), but FFmpeg has no demuxer for it. The reason is that so far
 only v210 in mov was provided.

 > I also observed an v210x codec, what is that for?


 > I noticed that you changed the priority to wish... if this isn't a bug,
 rather a confusion over the v210 format, I would be happy to supply a
 patch to support the Apple V210 specification.

 It is a missing feature in FFmpeg, the missing feature is not the Apple
 v210 specification (that is implemented and works fine afaict), but the
 way the frames are just concatenated (instead of either provided in a real
 container like avi and mov or as single frames).

Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1869#comment:7>
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