#259: framerate detection does not work properly. -------------------------------------+------------------------------------- Reporter: mbosner | Owner: Type: defect | Status: open Priority: normal | Component: Version: unspecified | undetermined Keywords: vc1 | Resolution: pulldown | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- Comment (by cehoyos): Samples uploaded to http://samples.ffmpeg.org/ffmpeg-bugs/trac/ticket259/ The following command lines do not lead to frame duplication (and smaller files are written) if "-r 24" is used: {{{ $ ffmpeg -i wrong_framerate.mkv -strict -2 -qscale 2 -vframes 196 out1.mov ffmpeg version N-48375-gc14f8a5 Copyright (c) 2000-2013 the FFmpeg developers built on Jan 1 2013 16:29:16 with gcc 4.7 (SUSE Linux) configuration: --enable-gpl --disable-indev=jack libavutil 52. 13.100 / 52. 13.100 libavcodec 54. 85.100 / 54. 85.100 libavformat 54. 58.102 / 54. 58.102 libavdevice 54. 3.102 / 54. 3.102 libavfilter 3. 30.102 / 3. 30.102 libswscale 2. 1.103 / 2. 1.103 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 Input #0, matroska,webm, from 'wrong_framerate.mkv': Metadata: creation_time : 2009-05-12 23:34:50 Duration: 01:47:42.19, start: 0.000000, bitrate: 12 kb/s Stream #0:0: Video: vc1 (Advanced) (WVC1 / 0x31435657), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 29.97 tbr, 1k tbn, 59.94 tbc (default) Stream #0:1: Audio: eac3, 48000 Hz, 5.1(side), fltp, 1536 kb/s (default) Stream #0:2: Audio: eac3, 48000 Hz, 5.1(side), fltp, 448 kb/s Please use -q:a or -q:v, -qscale is ambiguous Output #0, mov, to 'out1.mov': Metadata: encoder : Lavf54.58.102 Stream #0:0: Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 30k tbn, 29.97 tbc (default) Stream #0:1: Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1(side), fltp, 128 kb/s (default) Stream mapping: Stream #0:0 -> #0:0 (vc1 -> mpeg4) Stream #0:1 -> #0:1 (eac3 -> aac) Press [q] to stop, [?] for help frame= 196 fps= 63 q=2.0 Lsize= 3522kB time=00:00:06.53 bitrate=4411.3kbits/s dup=42 drop=0 video:3467kB audio:47kB subtitle:0 global headers:0kB muxing overhead 0.223866% }}} {{{ $ ffmpeg -i JerkyVC1Pulldown.EVO -strict -2 -qscale 2 -vframes 178 out.mov ffmpeg version N-48375-gc14f8a5 Copyright (c) 2000-2013 the FFmpeg developers built on Jan 1 2013 16:29:16 with gcc 4.7 (SUSE Linux) configuration: --enable-gpl --disable-indev=jack libavutil 52. 13.100 / 52. 13.100 libavcodec 54. 85.100 / 54. 85.100 libavformat 54. 58.102 / 54. 58.102 libavdevice 54. 3.102 / 54. 3.102 libavfilter 3. 30.102 / 3. 30.102 libswscale 2. 1.103 / 2. 1.103 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 2.100 / 52. 2.100 Input #0, mpeg, from 'JerkyVC1Pulldown.EVO': Duration: 00:00:05.90, start: 0.036744, bitrate: 13875 kb/s Stream #0:0[0xfd55]: Video: vc1 (Advanced), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 28.58 fps, 29.97 tbr, 90k tbn, 59.94 tbc Stream #0:1[0xc4]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s Stream #0:2[0xc3]: Audio: eac3, 48000 Hz, 5.1(side), fltp, 768 kb/s Stream #0:3[0xc2]: Audio: eac3, 48000 Hz, 5.1(side), fltp, 768 kb/s Stream #0:4[0x89]: Audio: dts (DTS), 48000 Hz, 5.1(side), fltp, 1536 kb/s Stream #0:5[0xc0]: Audio: eac3, 48000 Hz, 5.1(side), fltp, 1536 kb/s Please use -q:a or -q:v, -qscale is ambiguous Output #0, mov, to 'out.mov': Metadata: encoder : Lavf54.58.102 Stream #0:0: Video: mpeg4 (mp4v / 0x7634706D), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 30k tbn, 29.97 tbc Stream #0:1: Audio: aac (mp4a / 0x6134706D), 48000 Hz, 5.1(side), fltp, 128 kb/s Stream mapping: Stream #0:0 -> #0:0 (vc1 -> mpeg4) Stream #0:2 -> #0:1 (eac3 -> aac) Press [q] to stop, [?] for help frame= 178 fps= 61 q=2.0 Lsize= 2978kB time=00:00:05.93 bitrate=4107.8kbits/s dup=35 drop=0 video:2918kB audio:53kB subtitle:0 global headers:0kB muxing overhead 0.214350% }}} -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/259#comment:6> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker