a video file has many channels, , each channel contained in stream, e.g.
libavutil 52. 38.100 / 52. 38.100 libavcodec 55. 18.102 / 55. 18.102 libavformat 55. 12.100 / 55. 12.100 libavdevice 55. 3.100 / 55. 3.100 libavfilter 3. 79.101 / 3. 79.101 libswscale 2. 3.100 / 2. 3.100 libswresample 0. 17.102 / 0. 17.102 libpostproc 52. 3.100 / 52. 3.100 guessed channel layout input stream #0.1 : mono guessed channel layout input stream #0.2 : mono guessed channel layout input stream #0.3 : mono guessed channel layout input stream #0.4 : mono guessed channel layout input stream #0.5 : mono guessed channel layout input stream #0.6 : mono guessed channel layout input stream #0.7 : mono guessed channel layout input stream #0.8 : mono input #0, mov,mp4,m4a,3gp,3g2,mj2, '/data/tmp/ff6.mov': metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt creation_time : 2015-01-16 17:54:47 duration: 00:01:54.00, start: 0.000000, bitrate: 160836 kb/s stream #0:0(eng): video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 154650 kb/s, sar 1:1 dar 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc metadata: creation_time : 2015-01-16 17:54:47 handler_name : apple alias data handler timecode : 00:59:55:00 stream #0:1(eng): audio: pcm_s16le (sowt / 0x74776f73), 48000 hz, mono, s16, 768 kb/s metadata: creation_time : 2015-01-16 17:54:47 handler_name : apple alias data handler stream #0:2(eng): audio: pcm_s16le (sowt / 0x74776f73), 48000 hz, mono, s16, 768 kb/s metadata: creation_time : 2015-01-16 17:54:47 handler_name : apple alias data handler stream #0:3(eng): audio: pcm_s16le (sowt / 0x74776f73), 48000 hz, mono, s16, 768 kb/s metadata: creation_time : 2015-01-16 17:54:47 handler_name : apple alias data handler stream #0:4(eng): audio: pcm_s16le (sowt / 0x74776f73), 48000 hz, mono, s16, 768 kb/s metadata: creation_time : 2015-01-16 17:54:47 handler_name : apple alias data handler stream #0:5(eng): audio: pcm_s16le (sowt / 0x74776f73), 48000 hz, mono, s16, 768 kb/s metadata: creation_time : 2015-01-16 17:54:47 handler_name : apple alias data handler stream #0:6(eng): audio: pcm_s16le (sowt / 0x74776f73), 48000 hz, mono, s16, 768 kb/s metadata: creation_time : 2015-01-16 17:54:47 handler_name : apple alias data handler stream #0:7(eng): audio: pcm_s16le (sowt / 0x74776f73), 48000 hz, mono, s16, 768 kb/s metadata: creation_time : 2015-01-16 17:54:47 handler_name : apple alias data handler stream #0:8(eng): audio: pcm_s16le (sowt / 0x74776f73), 48000 hz, mono, s16, 768 kb/s metadata: creation_time : 2015-01-16 17:54:47 handler_name : apple alias data handler stream #0:9(eng): data: none (tmcd / 0x64636d74) metadata: creation_time : 2015-01-16 17:55:17 handler_name : apple alias data handler timecode : 00:59:55:00 is there method identify stream represents left channel, , represent right channel, , on. reviewing question.
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