[FFmpeg-devel] AC3 Format Detection unreliable.
Sun Aug 5 01:53:00 CEST 2007
* Justin Ruggles shaped the electrons to say...
>Doesn't look like that's an issue. I'm getting the same thing on my
>system. The file is valid. The issue seems to be the frame size.
>640kbps 48kHz is the largest AC3 frame size, and I think it's not
>fitting enough frames into the probe buffer to give a positive
>detection. I'll look into it.
FYI, the raw AC3 was originally in a Matroska container, using mkvextract to
pull it out. If I try and do my container conversion directly on the .mkv
file, ffmpeg spews tons of error messages about "non monotone timestamps",
but it identifies the ac3 stream properly:
Input #0, matroska, from 'foo.mkv':
Duration: 01:36:34.4, start: 0.000000, bitrate: N/A
Stream #0.0(eng): Video: h264, yuv420p, 1280x720, 24.39 fps(r)
Stream #0.1(eng): Audio: liba52, 48000 Hz, 5:1
Output #0, avi, to 'foo.avi':
Stream #0.0(eng): Video: libx264, yuv420p, 1280x720, q=2-31, 1000.00 fps(c)
Stream #0.1(eng): Audio: ac3, 48000 Hz, 5:1
<dsully> please describe web 2.0 to me in 2 sentences or less.
<jwb> you make all the content. they keep all the revenue.
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