#1438: problems with using -ss option when transcoding from *.vob to *.avi -------------------------------------+------------------------------------- Reporter: | Owner: superandrzej | Status: new Type: defect | Component: Priority: normal | undetermined Version: unspecified | Resolution: Keywords: | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+-------------------------------------
Comment (by superandrzej): Strange... when I played previous sample it was 40 seconds long. Anyway I'm uploading second sample Ticket #1438-2.vob 2:42. ~ 200M below the output and the resulting file is 15Kb: -> ffmpeg -ss 30 -i '/A/film-s3.vob' -map 0:0 -map 0:13 -qscale 2 '/A/film.avi' ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers built on Jun 10 2012 23:15:05 with gcc 4.6.2 configuration: --cpu=i686 --prefix=/usr --disable-static --enable-shared --enable-gpl --enable-version3 --disable-ffserver --enable-x11grab --disable-network --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora libavutil 51. 54.100 / 51. 54.100 libavcodec 54. 23.100 / 54. 23.100 libavformat 54. 6.100 / 54. 6.100 libavdevice 54. 0.100 / 54. 0.100 libavfilter 2. 77.100 / 2. 77.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100 [mpeg @ 0x8a853c0] max_analyze_duration 5000000 reached at 5000000 Input #0, mpeg, from '/A/film-s3.vob': Duration: 00:00:21.18, start: 0.287267, bitrate: 77341 kb/s Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR 64:45 DAR 16:9], 9800 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc Stream #0:1[0x20]: Subtitle: dvd_subtitle Stream #0:2[0x21]: Subtitle: dvd_subtitle Stream #0:3[0x22]: Subtitle: dvd_subtitle Stream #0:4[0x23]: Subtitle: dvd_subtitle Stream #0:5[0x24]: Subtitle: dvd_subtitle Stream #0:6[0x25]: Subtitle: dvd_subtitle Stream #0:7[0x26]: Subtitle: dvd_subtitle Stream #0:8[0x27]: Subtitle: dvd_subtitle Stream #0:9[0x80]: Audio: ac3, 48000 Hz, 5.1(side), s16, 448 kb/s Stream #0:10[0x81]: Audio: ac3, 48000 Hz, 5.1(side), s16, 384 kb/s Stream #0:11[0x82]: Audio: ac3, 48000 Hz, 5.1(side), s16, 384 kb/s Stream #0:12[0x83]: Audio: ac3, 48000 Hz, 5.1(side), s16, 384 kb/s Stream #0:13[0x84]: Audio: ac3, 48000 Hz, stereo, s16, 192 kb/s Stream #0:14[0x28]: Subtitle: dvd_subtitle Stream #0:15[0x29]: Subtitle: dvd_subtitle Stream #0:16[0x2a]: Subtitle: dvd_subtitle Please use -q:a or -q:v, -qscale is ambiguous File '/A/film.avi' already exists. Overwrite ? [y/N] y w:720 h:576 pixfmt:yuv420p tb:1/90000 sar:64/45 sws_param:flags=2 [buffersink @ 0x8a8d640] No opaque field provided Output #0, avi, to '/A/film.avi': Metadata: ISFT : Lavf54.6.100 Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 720x576 [SAR 64:45 DAR 16:9], q=2-31, 200 kb/s, 25 tbn, 25 tbc Stream #0:1: Audio: mp3 (U[0][0][0] / 0x0055), 48000 Hz, stereo, s16 Stream mapping: Stream #0:0 -> #0:0 (mpeg2video -> mpeg4) Stream #0:13 -> #0:1 (ac3 -> libmp3lame) Press [q] to stop, [?] for help [ac3 @ 0x8bd4d20] frame sync error Error while decoding stream #0:13 [mpeg @ 0x8a853c0] Adjusting PTS forward Last message repeated 1 times [mpeg2video @ 0x8a8b740] ac-tex damaged at 28 13 [mpeg2video @ 0x8a8b740] Warning MVs not available [mpeg2video @ 0x8a8b740] concealing 1035 DC, 1035 AC, 1035 MV errors [ac3 @ 0x8bd4d20] incomplete frame frame= 0 fps=0.0 q=0.0 Lsize= 15kB time=00:00:-8.-68 bitrate= -13.7kbits/s dup=0 drop=6 video:0kB audio:4kB global headers:0kB muxing overhead 223.177083% -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1438#comment:5> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker _______________________________________________ FFmpeg-trac mailing list FFmpeg-trac@avcodec.org http://avcodec.org/mailman/listinfo/ffmpeg-trac