[FFmpeg-user] H.264 to jpeg thumbnail

Carl Eugen Hoyos cehoyos at ag.or.at
Thu Sep 10 10:29:24 CEST 2015

yuji <yuji1967_2-at-yahoo.co.jp <at> ffmpeg.org> writes:

> > ffmpeg -threads 1 -i clock.ts %5d.jpg
> Unfortunately, no changed images.

I tested the following:
$ ffmpeg -threads 1 -i clock.ts -f framecrc out1
$ ffmpeg -threads 2 -i clock.ts -f framecrc out2

And the problematic frames 57 and 72 (56 and 71 
as counted by framecrc) are the ones that have 
different output so at least "no changed images" 
cannot be true.

Carl Eugen

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