On 12/30/15, Christian Johannesen <chrisjohanne...@gmail.com> wrote: > I ran into an issue with ffmpeg tonight where I could not trim a source > because of the audio channel configuration of the track I was pulling audio > from. The source has a track of 12 channels of audio. I can process the > first two channels in the track to a stereo output with the pan filter. If > I apply a trim to the input - the trim for input stream complains that it > cannot select the channel layout for the link between the filters trim and > the Parsed_pan_0. I have tried adding -guess_layout_max 0 before the input, > and have tried > setting aformat=channel_layouts=FC+FC+FC+FC+FC+FC+FC+FC+FC+FC+FC+FC without > success. > > Any suggestions would be appreciated. > > Thanks, > Chris > >>ffmpeg.exe -r 24000/1001 -ss 00:00:06.256 -t 00:00:20.771 -i > d:\media\1080p2398_timecode_12ch_multitrack.mov -filter_complex > "[0:1]pan=2c|c0=c0c1=c1[pan_0_0]" -map 0:0 -map "[pan_0_0]" -c:v libx264 > -c:a aac -shortest d:\media\1080p2398_timecode_clip_stereo.mp4 > ffmpeg version N-77528-gf88546b Copyright (c) 2000-2015 the FFmpeg > developers > built with gcc 5.2.0 (GCC) > configuration: --enable-gpl --enable-nonfree --enable-libx264 > --enable-libx265 --enable-libfdk_aac --enable-static --disable-shared > --enable-libfreetype --enable-libfontconfig > libavutil 55. 11.100 / 55. 11.100 > libavcodec 57. 20.100 / 57. 20.100 > libavformat 57. 21.100 / 57. 21.100 > libavdevice 57. 0.100 / 57. 0.100 > libavfilter 6. 22.100 / 6. 22.100 > libswscale 4. 0.100 / 4. 0.100 > libswresample 2. 0.101 / 2. 0.101 > libpostproc 54. 0.100 / 54. 0.100 > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from > 'd:\media\1080p2398_timecode_12ch_multitrack.mov': > Metadata: > major_brand : qt > minor_version : 537199360 > compatible_brands: qt > creation_time : 2015-12-30 03:50:57 > com.apple.quicktime.player.version: 7.6.9 (Dev) > com.apple.quicktime.version: 7.6.9 (1680.9) > com.apple.quicktime.player.movie.audio.gain: 1.000000 > com.apple.quicktime.player.movie.audio.treble: 0.000000 > com.apple.quicktime.player.movie.audio.bass: 0.000000 > com.apple.quicktime.player.movie.audio.balance: 0.000000 > com.apple.quicktime.player.movie.audio.pitchshift: 0.000000 > com.apple.quicktime.player.movie.audio.mute: > com.apple.quicktime.player.movie.visual.brightness: 0.000000 > com.apple.quicktime.player.movie.visual.color: 1.000000 > com.apple.quicktime.player.movie.visual.tint: 0.000000 > com.apple.quicktime.player.movie.visual.contrast: 1.000000 > Duration: 00:00:27.07, start: 0.000000, bitrate: 29785 kb/s > Stream #0:0(eng): Video: prores (apcs / 0x73637061), > yuv422p10le(bt709), 1920x1080, 15958 kb/s, SAR 1:1 DAR 16:9, 23.98 fps, > 23.98 tbr, 24k tbn, 24k tbc (default) > Metadata: > creation_time : 2015-12-30 03:50:57 > handler_name : Apple Alias Data Handler > encoder : Apple ProRes 422 (LT) > timecode : 00:59:45:00 > Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 12 > channels, s32 (24 bit), 13824 kb/s (default) > Metadata: > creation_time : 2015-12-30 03:50:57 > handler_name : Apple Alias Data Handler > timecode : 00:59:45:00 > Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default) > Metadata: > creation_time : 2015-12-30 03:50:57 > handler_name : Apple Alias Data Handler > timecode : 00:59:45:00 > [trim for input stream 0:1 @ 000000ecd74caac0] Cannot select channel layout > for the link between filters trim for input stream 0:1 and Parsed_pan_0. > [trim for input stream 0:1 @ 000000ecd74caac0] Unknown channel layouts not > supported, try specifying a channel layout using > 'aformat=channel_layouts=something'. > Error configuring complex filters. > Invalid argument > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user >
Looks like bug in atrim filter, I will post patch for it. _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user