ffmpeg: How to speed up video AND audio.
You need ffmpeg version 2.x – download from here if you don’t have it: http://johnvansickle.com/ffmpeg/ or compile the latest version from source: http://trac.ffmpeg.org/wiki/CompilationGuide Here’s a script I use to resize my GoPro videos and speed them up by 4 times: The max value for ‘atempo’ is 2, so you have to string two of them […]