[FFmpeg-trac] #3622(avformat:reopened): Second audio track in mov sometimes marked as default
FFmpeg
trac at avcodec.org
Mon Jul 21 14:18:20 CEST 2014
#3622: Second audio track in mov sometimes marked as default
-------------------------------------+-------------------------------------
Reporter: cehoyos | Owner:
Type: defect | Status: reopened
Priority: important | Component: avformat
Version: git-master | Resolution:
Keywords: mov | Blocked By:
regression | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by outlyer):
Replying to [comment:11 michael]:
> Replying to [comment:10 cehoyos]:
> > The issue is still reproducible with current FFmpeg git head:
>
> can you explain in which way it is insufficient ? / what did QT do ?
When a file is played by QuickTime on a desktop, both audio tracks play
simultaneously; on an AppleTV, the AC-3 track is ignored and cannot be
played - only the AAC track is usable.
Both audio tracks are visible when ffprobe is used, but having multiple
default audio streams causes the problem.
== Broken (Unplayable AC-3) ==
{{{
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 256 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream #0:2(eng): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side),
fltp, 384 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream #0:3(eng): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s
(default)
Metadata:
handler_name : SubtitleHandler
Stream #0:4: Video: mjpeg, yuvj444p(pc), 600x600 [SAR 72:72 DAR 1:1],
90k tbr, 90k tbn, 90k tbc
}}}
== Playable (Working dual-audio) ==
{{{
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo,
fltp, 256 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream #0:2(eng): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side),
fltp, 384 kb/s
Metadata:
handler_name : SoundHandler
Stream #0:3(eng): Subtitle: mov_text (tx3g / 0x67337874), 0 kb/s
(default)
Metadata:
handler_name : SubtitleHandler
Stream #0:4: Video: mjpeg, yuvj444p(pc), 600x600 [SAR 72:72 DAR 1:1],
90k tbr, 90k tbn, 90k tbc
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3622#comment:12>
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