[FFmpeg-trac] #3019(avfilter:open): fieldmatch + decimate causes out-of-sync audio
FFmpeg
trac at avcodec.org
Wed Oct 9 15:39:37 CEST 2013
#3019: fieldmatch + decimate causes out-of-sync audio
-------------------------------------+-------------------------------------
Reporter: | Owner:
spookybathtub | Status: open
Type: defect | Component: avfilter
Priority: normal | Resolution:
Version: git-master | Blocked By:
Keywords: pullup | Reproduced by developer: 1
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by cehoyos):
The original desync problem is also reproducible with the following
command line:
{{{
$ ffmpeg -i NCIS-trim.ts -vf pullup,decimate -qscale 2 out.avi
ffmpeg version N-56994-g19fda0a Copyright (c) 2000-2013 the FFmpeg
developers
built on Oct 9 2013 15:38:08 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl
libavutil 52. 46.101 / 52. 46.101
libavcodec 55. 35.100 / 55. 35.100
libavformat 55. 19.100 / 55. 19.100
libavdevice 55. 4.100 / 55. 4.100
libavfilter 3. 88.101 / 3. 88.101
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.103 / 0. 17.103
libpostproc 52. 3.100 / 52. 3.100
[mpeg2video @ 0x20c58c0] Invalid frame dimensions 0x0.
Last message repeated 2 times
Input #0, mpegts, from 'NCIS-trim.ts':
Duration: 00:00:54.76, start: 11120.950633, bitrate: 15319 kb/s
Program 258
Stream #0:0[0xe0]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002),
yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], max. 79975 kb/s, 29.97
fps, 29.97 tbr, 90k tbn, 59.94 tbc
Stream #0:1[0x80](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
5.1(side), fltp, 384 kb/s
Stream #0:2[0x81](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz,
mono, fltp, 96 kb/s (visual impaired)
Please use -q:a or -q:v, -qscale is ambiguous
Output #0, avi, to 'out.avi':
Metadata:
ISFT : Lavf55.19.100
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1920x1080 [SAR
1:1 DAR 16:9], q=2-31, 200 kb/s, 23.98 tbn, 23.98 tbc
Stream #0:1(eng): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz,
5.1(side), fltp, 448 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (mpeg2video -> mpeg4)
Stream #0:1 -> #0:1 (ac3 -> ac3)
Press [q] to stop, [?] for help
[mpeg2video @ 0x20c58c0] ac-tex damaged at 19 150:00:52.76
bitrate=10965.4kbits/s
[mpeg2video @ 0x20c58c0] Warning MVs not available
[mpeg2video @ 0x20c58c0] concealing 6360 DC, 6360 AC, 6360 MV errors in B
frame
frame= 1038 fps= 56 q=2.0 Lsize= 72747kB time=00:00:54.01
bitrate=11032.7kbits/s
video:69718kB audio:2954kB subtitle:0 global headers:0kB muxing overhead
0.102079%
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/3019#comment:11>
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