[FFmpeg-trac] #1435(undetermined:open): Remuxing aac from mov to avi breaks timestamps (was: FFmpeg 0.11.1 simple reproducable synchronisation bug with work around - non imput specific)
FFmpeg
trac at avcodec.org
Mon Jun 11 22:56:52 CEST 2012
#1435: Remuxing aac from mov to avi breaks timestamps
-------------------------------------+-------------------------------------
Reporter: feelart | Owner:
Type: defect | Status: open
Priority: normal | Component:
Version: git-master | undetermined
Keywords: avi aac | Resolution:
desync | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by cehoyos):
* keywords: avi desync => avi aac desync
* status: new => open
* version: 0.11.1 => git-master
* reproduced: 0 => 1
Comment:
out.avi has broken audio timestamps / does not play correctly with ffmpeg
and MPlayer.
{{{
$ ffmpeg -i \'acopy_mpeg4MP4.mp4\' -acodec copy -qscale 2 out.avi
ffmpeg version N-41509-g20e46aa Copyright (c) 2000-2012 the FFmpeg
developers
built on Jun 11 2012 09:15:19 with gcc 4.3.2
configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl --enable-
libopenjpeg --enable-libvorbis --enable-libspeex --enable-libmp3lame
--enable-libtheora --extra-ldflags=-lm --enable-libvpx --enable-libxavs
libavutil 51. 57.100 / 51. 57.100
libavcodec 54. 25.100 / 54. 25.100
libavformat 54. 6.101 / 54. 6.101
libavdevice 54. 0.100 / 54. 0.100
libavfilter 2. 78.101 / 2. 78.101
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 15.100 / 0. 15.100
libpostproc 52. 0.100 / 52. 0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ''acopy_mpeg4MP4.mp4'':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
encoder : Lavf54.6.101
Duration: 00:00:49.04, start: 0.000000, bitrate: 854 kb/s
Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D),
yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 786 kb/s, 29.97 fps, 29.97 tbr, 30k
tbn, 30k tbc
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 24000 Hz, mono, s16,
64 kb/s
Metadata:
handler_name : SoundHandler
Please use -q:a or -q:v, -qscale is ambiguous
[buffer @ 0x904f3e0] w:1280 h:720 pixfmt:yuv420p tb:1/30000 fr:30000/1001
sar:1/1 sws_param:flags=2
[ffmpeg_buffersink @ 0x901a900] No opaque field provided
Output #0, avi, to 'out.avi':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
ISFT : Lavf54.6.101
Stream #0:0(und): Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1280x720
[SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 tbn, 29.97 tbc
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac ([255][0][0][0] / 0x00FF), 24000 Hz,
mono, 64 kb/s
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (mpeg4 -> mpeg4)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 1470 fps= 50 q=2.0 Lsize= 9238kB time=00:00:49.02
bitrate=1543.6kbits/s
video:8782kB audio:383kB global headers:0kB muxing overhead 0.789841%
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1435#comment:9>
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