This command copies the video stream from input.webm into output.mkv and encodes the Vorbis audio stream into a FLAC. The optional FFmpeg library allows Audacity to import and export a much larger range of audio formats including M4A (AAC), AC3, AMR (narrow band) and WMA and also to import audio from most video files. FFmpeg can help with this situation: ffmpeg -i input.webm -c:v copy -c:a flac output.mkv. Installing the FFmpeg Import/Export Library on Windows. I am really struggling to find a command line that works for me. It can be very time consuming to re-encode the correct stream. However, both should play the entire audio in 2:09:42. Audacity will report the correct time for the extracted audio file, but VLC wont. Try Audacity to extract audio from video file, or ffmpeg -i 'input.mp4' -vn -acodec copy audio.aac. I am trying to use FFmpeg to convert my m4a or mp3 files to AAC, Low Complexity Profile (LC) If you play the video in VLC, it should finish in 2:09:42. I have the following setup for FFmpeg: ffmpeg version N-54790-g1816f55-syslint Copyright (c) 2000-2013 the FFmpeg developersīuilt on 21:34:32 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-3)Ĭonfiguration: -prefix=/usr/local/cpffmpeg -enable-shared -enable-nonfree -enable-gpl -enable-pthreads -enable-libopencore-amrnb -enable-decoder=liba52 -enable-libopencore-amrwb -enable-libfaac -enable-libmp3lame -enable-libtheora -enable-libvorbis -enable-libx264 -enable-libxvid -extra-cflags=-I/usr/local/cpffmpeg/include/ -extra-ldflags=-L/usr/local/cpffmpeg/lib -enable-version3 -extra-version=syslint
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