h full - print all options (including all format and codec specific options, very long) You mayĪlso want to specify a -f for the output to choose a container fomat IĪm not sure what it will use by default, probably the same as the input.įfmpeg options infile_options -i infileName outfile_options outfileName -f fmt force format fmt ffmpeg manual c:a copy means just copy it, no re-encoding. The default map which would be to copy every stream, so you get only theĪudio, not both.

map 0:1 means stream number 1 from file number 0, which would usuallyīe the audio track (edit as necessary). Stream #0:1(eng): Audio: vorbis, 44100 Hz, stereo, fltp (default)įfmpeg -i x.opus -c:a copy x.webm Add Opus Audio into Existing Webmįfmpeg -i y.webm -i x.opus -c:v copy -c:a copy x.webm Extract Audio from VideoĮxtract audio file inside file x.mp4 and name it x.m4aįfmpeg -f mp4 -i x.mp4 -vn -c:a copy x.m4aįfmpeg -f mp4 -i x.mp4 -map 0:1 -c:a copy x.m4a

To find out what's inside, use ffprobe, e.g.Įxample output: ~/web/xahmusic_org/music/i $ ffprobe xx.mkvįfprobe version 3.4 Copyright (c) 2007-2017 the FFmpeg developersīuilt with Apple LLVM version 9.0.0 (clang-900.0.37)Ĭonfiguration: -prefix=/usr/local/Cellar/ffmpeg/3.4 -enable-shared -enable-pthreads -enable-version3 -enable-hardcoded-tables -enable-avresample -cc=clang -host-cflags= -host-ldflags= -enable-gpl -enable-libmp3lame -enable-libx264 -enable-libxvid -enable-opencl -enable-videotoolbox -disable-lzmaĭuration: 00:05:04.90, start: 0.000000, bitrate: 1329 kb/s They package together video file, audio files, and other files, of various formats into 1 file. Clip a Videoįfmpeg -ss 00:10:05 -i input.mp4 -to 00:13:50 -c copy output.mp4 -ss time_off Set the start time offset -to time_stop Record or transcode stop time Find Out What's Inside a Video Container

For some years around 2015, avconv is rename of ffmpeg.

Ffmpeg copy codec webm to mp4