[gst-devel] qtdemux behavior with audio payload in 3G2, sample_size != 0

Edward Averill edaverill at hotmail.com
Thu Mar 20 18:41:48 CET 2008

I'm seeing some unusual behavior playing back a 3G2 file via qtdemux, which contains H.263 video and QCELP audio - but *only* with files that have an audio payload sample size that's not equal to zero.  The sample_size in the file is correct - 17 bytes - but somewhere in the guts of the code, it decides to send our decoder odd-sized packets, and not only that, it skips over huge chunks of the audio payload stream.  It looks like something goes pear-shaped when it treats samples as chunks.

Does anyone have any experience playing other 3G2/3GP/MP4 files with a fixed audio sample size?  These files will play in GOMPlayer on Linux, but not via gStreamer.

All info appreciated.


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