On 10/23/17, Frank @ Taapo <[email protected]> wrote: > I have been trying to get sidechaining to work with FFMPEG, but my complex > filter skills are lacking. > > I'm running two aif files into ffmpeg, hoping the voice would "duck" the > background music when the voice-over is speaking. But I get an error with > this command-line (on Windows, with latest FFMPEG binary): > > ffmpeg.exe -i temp_music.aif -i temp_voice.aif -filter_complex > "[1:a]asplit=2[sc][mix];[0:a][sc]sidechaincompress=threshold=0.1:ratio=5[bg]; > [bg][mix]amerge[fin**al]" -map [final] final.mp3 > > Everything decodes fine: > > ffmpeg version N-87353-g183fd30 Copyright (c) 2000-2017 the FFmpeg > developers > built with gcc 7.2.0 (GCC) > configuration: --enable-gpl --enable-version3 --enable-cuda > --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx > --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig > --enable-frei0r --enable-gnutls --enable-iconv --enable-libass > --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype > --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug > --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb > --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp > --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora > --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc > --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp > --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid > --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib > libavutil 55. 76.100 / 55. 76.100 > libavcodec 57.106.101 / 57.106.101 > libavformat 57. 82.101 / 57. 82.101 > libavdevice 57. 8.101 / 57. 8.101 > libavfilter 6.105.100 / 6.105.100 > libswscale 4. 7.103 / 4. 7.103 > libswresample 2. 8.100 / 2. 8.100 > libpostproc 54. 6.100 / 54. 6.100 > Guessed Channel Layout for Input Stream #0.0 : stereo > Input #0, aiff, from 'temp_music.aif': > Duration: 00:01:26.68, start: 0.000000, bitrate: 1536 kb/s > Stream #0:0: Audio: pcm_s16be, 48000 Hz, stereo, s16, 1536 kb/s > Guessed Channel Layout for Input Stream #1.0 : stereo > Input #1, aiff, from 'temp_voice.aif': > Duration: 00:01:26.68, start: 0.000000, bitrate: 1536 kb/s > Stream #1:0: Audio: pcm_s16be, 48000 Hz, stereo, s16, 1536 kb/s > Output with label 'final' does not exist in any defined filter graph, or > was already used elsewhere. > > But then I receive an error: > > Output with label 'final' does not exist in any defined filter graph, or > was already used elsewhere. > > Anybody knows why?
outputs pads names apparently can not have more than 2 chars. _______________________________________________ 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".
