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bug #24649: AudioDecoderFfmpeg: could not initialize a parser for ffmpeg codec id 86021

Submitter:  Sandro Santilli <strk>
Submitted:  Sat 25 Oct 2008 05:00:42 PM UTC
   
 
Category:  video-ffmpeg Severity:  3 - Normal
Release:  None Status:  Confirmed
Privacy:  Public Assigned to:  None
Open/Closed:  Open
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Thu 28 Jul 2011 12:52:02 PM UTC, comment #4: 

Reassigning to sortie, who's working on refactoring of AudioDecoder interface.

 Sandro Santilli <strk>
Group Member
Sun 20 Feb 2011 03:23:46 AM UTC, comment #3: 

The synchronisation issue appears to be caused by the lack of timestamps provided by the container format of the input file. (Or, potentially, ffmpeg fails to recognise them.) Timestamps will therefore not be known prior to decoding, and after that could only be construed by counting samples provided by the decoder.

Playback synchronisation is presently dependent on the availability of accurate timestamps.

 Bastiaan Jacques <bjacques>
Group Member
Sun 20 Feb 2011 02:58:13 AM UTC, comment #2: 

There are two distinct issues here:

1. The AudioDecoderFfmpeg class insists on creating a parser for audio streams, but ffmpeg does not provide one for Vorbis. A decoder is available, which works fine. Nonetheless, AudioDecoderFfmpeg bails out because of the lack of parser.

2. When that hurdle is removed, a synchronisation issue appears; this may be related to the first frame of encoded audio not producing an output, which is only available after the second frame is decoded. I also see a lot of buffer overrun warnings for decoded audio frames.

 Bastiaan Jacques <bjacques>
Group Member
Sat 12 Feb 2011 09:27:16 PM UTC, comment #1: 


It plays fine with gst.

With ffmpeg, no audio.

10923:1] 22:08:43 ERROR: Could not create Audio decoder: AudioDecoderFfmpeg: could not initialize a parser for ffmpeg codec id 86021


- debian amd64 squeeze

 Gabriele Giacone <gg0>
Group Member
Sat 25 Oct 2008 05:00:42 PM UTC, original submission:  

easyvideo.swf?url=kiro.ogg

 ERROR: MediaParserGst failed to push more data into the demuxer! Seeking back.
 ERROR: Error decoding encoded video frame in NetStream input
 ERROR: nextVideoFrameTimestamp returned true (0), but decodeNextVideoFrame returned null, I don't think this should ever happen
 ERROR: Error decoding encoded video frame in NetStream input
 ERROR: nextVideoFrameTimestamp returned true (0), but decodeNextVideoFrame returned null, I don't think this should ever happen

Only a small portion of initial sound can be heared,
no video at all (blank).

Haven't tried ffmpeg actually, so dunno yet if it's only
a MediaParserGst issue...

 Sandro Santilli <strk>
Group Member

 

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Carbon-Copy List
  • -email is unavailable- added by sortie (Updated the item)
  • -email is unavailable- added by gg0 (Posted a comment)
  • -email is unavailable- added by bjacques (Updated the item)
  • -email is unavailable- added by strk (Submitted the item)

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    Follow 10 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2016-10-16 sortie Assigned tosortie None
    2011-07-28 strk Assigned toNone sortie
    2011-02-20 bjacques Categoryvideo-gst video-ffmpeg
        StatusWorks For Me Confirmed
        Assigned tobjacques None
        SummaryERROR: MediaParserGst failed to push more data into the demuxer! Seeking back. AudioDecoderFfmpeg: could not initialize a parser for ffmpeg codec id 86021
    2011-02-12 gg0 Open/ClosedClosed Open
    2011-02-12 gg0 Severity5 - Blocker 3 - Normal
        Open/ClosedOpen Closed
    2009-02-28 bjacques StatusNone Works For Me

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