FFMPEG Quickstart

gistfile1.md

• FFmpeg is a complete, cross-platform solution to record, convert and stream audio and video. Typically you can use it in command lines or GUI, and many popular video editors are developed based on FFmpeg. Some usage examples are as follows:
  • Transcoding: ffmpeg -i input.mp4 output.avi
  • Video clipping: ffmpeg -i input.mkv -ss 11 -to 15 out.mkv to get a video clip from 11 second to 15 second. You can also replace -ss 11 -to 15 with -ss 00:00:11 -to 00:00:15 or -ss 00:11 -to 00:15 or -ss 00:11 -t 5 where parameter -t devotes time duration.
  • Video Frame screenshot: ffmpeg -i input.mkv -ss 5 -vframes 1 img.jpg to get the 1st frame in the selected second.
  • Watermark: ffmpeg -i input.mkv -i logo.png -filter_complex "[1]scale=192:108[b];[0][b]overlay=20:20" output.mkv with parameter scale for resizing watermark and overlay for watermark location (top-left pixel location). Use -filter_complex "overlay=20:20" instead if you don't need to scale watermark.
  • Extract audio from video: ffmpeg -i input.mkv -vn -acodec copy aout.m4a
  • Remove audio from video: ffmpeg -i input.mkv -vcodec copy -an vout.mkv
  • Generate animated GIF: ffmpeg -i input.mkv -ss 11 -to 15 -s 640x320 -r 15 out.gif with paramter -s for frame scaling and -r for frame rate resetting.
  • Use FFplay to play a video or audio: ffplay input.mkv, press Q key to quit when finished.