[FFmpeg-user] Extract all keyframes

Carl Eugen Hoyos cehoyos at ag.or.at
Sun Jun 29 13:15:42 CEST 2014

Matthew Bondy <bondy1z <at> uwindsor.ca> writes:

> My question: When I do not specify the frame rate 
> I assume ffmpeg uses some default (20, 25?).

This is (at least generally) not true.

What happens if you run:
ffmpeg -i yourinput -qscale 2 out.avi
Please provide your command, the console output 
and explain what is wrong if you don't specify 

Carl Eugen

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