Hello, I have a file which have two differend audio put in one AAC stream in separate stereo channels. I want to split the stereo channel to two separate AAC mono streams.
https://trac.ffmpeg.org/wiki/AudioChannelManipulation This works when target file is MKV and audio is Vorbis, but it does not seem to work when targed file is MP4 with aac audio. -Tommi ffmpeg -i MEDIA_2009_00020219.mp4 -filter_complex channelsplit=channel_layout=stereo MEDIA_2009_00020219_split.mp4 ffmpeg version N-91236-ge4006a474f Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7.3.0 (GCC) configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth libavutil 56. 18.102 / 56. 18.102 libavcodec 58. 19.105 / 58. 19.105 libavformat 58. 17.100 / 58. 17.100 libavdevice 58. 4.100 / 58. 4.100 libavfilter 7. 25.100 / 7. 25.100 libswscale 5. 2.100 / 5. 2.100 libswresample 3. 2.100 / 3. 2.100 libpostproc 55. 2.100 / 55. 2.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MEDIA_2009_00020219.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf58.17.100 Duration: 02:06:17.02, start: 0.000000, bitrate: 885 kb/s Stream #0:0(fin): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 125 kb/s (default) Metadata: handler_name : SoundHandler Stream #0:1(swe): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/s Metadata: handler_name : SoundHandler Stream #0:2(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 748 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default) Metadata: handler_name : VideoHandler Stream mapping: Stream #0:0 (aac) -> channelsplit (graph 0) channelsplit:FL (graph 0) -> Stream #0:0 (aac) channelsplit:FR (graph 0) -> Stream #0:1 (aac) Stream #0:2 -> #0:2 (h264 (native) -> h264 (libx264)) Press [q] to stop, [?] for help [aac @ 000001b9d2967d00] Unsupported channel layout Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height Conversion failed! Tommi Lehtonen Tekninen suunnittelija / Technical planner Radio- ja televisioarkisto / Radio & TV Archive Kansallinen audiovisuaalinen instituutti (KAVI) / National Audiovisual Institute Helsinki Sörnäisten rantatie 25, 4-6 krs. [email protected]<mailto:[email protected]> +358 2953 38146 ************************* _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
