New submission from Carl Eugen Hoyos <[email protected]>:
Original thread: http://thread.gmane.org/gmane.comp.video.ffmpeg.devel/119595 ffmpeg -i mono-mp2.mp4 -acodec copy out.mp2 FFmpeg version SVN-r25528, Copyright (c) 2000-2010 the FFmpeg developers built on Oct 19 2010 11:43:14 with gcc 4.4.4 configuration: --cc=/usr/local/gcc-4.4.4/bin/gcc libavutil 50.32. 3 / 50.32. 3 libavcore 0. 9. 1 / 0. 9. 1 libavcodec 52.92. 0 / 52.92. 0 libavformat 52.84. 0 / 52.84. 0 libavdevice 52. 2. 2 / 52. 2. 2 libavfilter 1.53. 0 / 1.53. 0 libswscale 0.12. 0 / 0.12. 0 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mono-mp2.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2mp41 encoder : Lavf52.79.0 Duration: 00:00:30.00, start: 0.000000, bitrate: 1218 kb/s Stream #0.0(und): Video: mpeg4, yuv420p, 720x576 [PAR 1:1 DAR 5:4], 1022 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc Stream #0.1(und): Audio: mp2, 48000 Hz, 2 channels, s16, 192 kb/s Output #0, mp2, to 'out.mp2': Metadata: encoder : Lavf52.84.0 Stream #0.0(und): Audio: mp2, 48000 Hz, 2 channels, 192 kb/s Stream mapping: Stream #0.1 -> #0.0 Press [q] to stop encoding size= 703kB time=30.00 bitrate= 192.0kbits/s video:0kB audio:703kB global headers:0kB muxing overhead 0.000000% ffmpeg -i out.mp2 FFmpeg version SVN-r25528, Copyright (c) 2000-2010 the FFmpeg developers built on Oct 19 2010 11:43:14 with gcc 4.4.4 configuration: --cc=/usr/local/gcc-4.4.4/bin/gcc libavutil 50.32. 3 / 50.32. 3 libavcore 0. 9. 1 / 0. 9. 1 libavcodec 52.92. 0 / 52.92. 0 libavformat 52.84. 0 / 52.84. 0 libavdevice 52. 2. 2 / 52. 2. 2 libavfilter 1.53. 0 / 1.53. 0 libswscale 0.12. 0 / 0.12. 0 [mp3 @ 0x11cb470] max_analyze_duration reached [mp3 @ 0x11cb470] Estimating duration from bitrate, this may be inaccurate Input #0, mp3, from 'out.mp2': Duration: 00:00:30.00, start: 0.000000, bitrate: 192 kb/s Stream #0.0: Audio: mp2, 48000 Hz, 1 channels, s16, 192 kb/s At least one output file must be specified ---------- messages: 12320 priority: normal status: open substatus: open title: mp2 mono in mp4 is detected as stereo type: bug ________________________________________________ FFmpeg issue tracker <[email protected]> <https://roundup.ffmpeg.org/issue2313> ________________________________________________
