#1329: A/V desync with mpeg1video and mp2 in mpeg-ps -------------------------------------+------------------------------------- Reporter: burek | Owner: Type: defect | Status: open Priority: normal | Component: Version: git-master | undetermined Keywords: mpegps | Resolution: desync | Blocked By: Blocking: | Reproduced by developer: 1 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Changes (by cehoyos):
* keywords: => mpegps desync * status: new => open * version: unspecified => git-master * reproduced: 0 => 1 Comment: Sample uploaded to samples/ffmpeg-bugs/trac/ticket1329 Without -async 1, the resulting file is very heavily out-of-sync, with -async 1, small desync is still visible imo after 30 seconds, not a regression afaict. Seeking does not work for the sample, works fine with MPlayer. {{{ $ ffmpeg -async 1 -i invalid_cliping_on_screen_but_encodes_finishes.mpg -q:v 2 -strict experimental out.mp4 ffmpeg version N-41352-gc8a1101 Copyright (c) 2000-2012 the FFmpeg developers built on Jun 6 2012 07:55:08 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. 56.100 / 51. 56.100 libavcodec 54. 25.100 / 54. 25.100 libavformat 54. 6.101 / 54. 6.101 libavdevice 54. 0.100 / 54. 0.100 libavfilter 2. 78.100 / 2. 78.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100 [mpeg @ 0x90143c0] max_analyze_duration 5000000 reached at 5015467 Input #0, mpeg, from 'invalid_cliping_on_screen_but_encodes_finishes.mpg': Duration: 26:31:34.47, start: 0.620000, bitrate: 0 kb/s Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p, 640x480 [SAR 1:1 DAR 4:3], 1452 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16, 128 kb/s [buffer @ 0x901c620] w:640 h:480 pixfmt:yuv420p tb:1/90000 sar:1/1 sws_param:flags=2 [ffmpeg_buffersink @ 0x901c580] No opaque field provided -async is forwarded to lavfi similarly to -af aresample=min_comp=0.001:min_hard_comp=0.100000. [aresample @ 0x9015760] chl:stereo fmt:s16 r:44100Hz -> chl:stereo fmt:flt r:44100Hz Output #0, mp4, to 'out.mp4': Metadata: encoder : Lavf54.6.101 Stream #0:0: Video: mpeg4 ( [0][0][0] / 0x0020), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 25 tbn, 25 tbc Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 44100 Hz, stereo, flt, 128 kb/s Stream mapping: Stream #0:0 -> #0:0 (mpeg1video -> mpeg4) Stream #0:1 -> #0:1 (mp2 -> aac) Press [q] to stop, [?] for help frame= 1279 fps= 65 q=2.0 Lsize= 23874kB time=00:00:51.16 bitrate=3822.8kbits/s dup=3 drop=0 video:23092kB audio:748kB global headers:0kB muxing overhead 0.141022% }}} -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1329#comment:5> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker _______________________________________________ FFmpeg-trac mailing list FFmpeg-trac@avcodec.org http://avcodec.org/mailman/listinfo/ffmpeg-trac