[FFmpeg-user] filter thumbnail does not respect aspect ratio

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Apr 9 12:33:14 CEST 2013

Thomas Seilund <tps <at> netmaster.dk> writes:

> 16:9 video:
> ffmpeg -i p20120122142736.mpg -ss 0 -vf thumbnail 
> -frames:v 1 thumbnail.jpg

What does ffmpeg -i thumbnail.jpg report?
I am also (often) using ImageMagick to test 
issues, but it is definitely not a bug-free 
project (see for example 61a9f09).

Carl Eugen

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