FFMpeg Cheat Sheets


FFmpeg is complete, cross platform solution to record, convert, stream audio and video. It has the leading libavcodec library. Here in this post, I am going to post a small cheat sheet compilation I have done.
  • Install FFMpeg
  • Check supported codecs:
    ffmpeg -codecs
  • View a files detail information
    ffmpeg -i input_file_name
  • Convert wav to mp3 (128 kbps)
    ffmpeg -i Input.wav -ab 128 Output.mp3
  • Convert wmv video file to mp4
    ffmpeg -i wmv_file.wmv OutputFile.mp4
  • Change frame rate of a video
    ffmpeg -i input.avi -r 24 output.avi
  • Set video bitrate of output file
    ffmpeg -i input.avi -b:v 64k -bufsize 64k output.avi
  • Record video from webcam ( webcam(laptop integrated) for me is /dev/video0 )
    ffmpeg -f video4linux2 -r 25 -s 640x480 -i /dev/video0 out.avi
  • Record Desktop Screen
    ffmpeg -f x11grab -video_size cif -framerate 24 -i :0.0 foo.avi
  • Publish video to rtmp server
    ffmpeg -re -i video.avi -c copy -f flv rtmp_url

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