[FFmpeg-user] H.264 to jpeg thumbnail

Carl Eugen Hoyos cehoyos at ag.or.at
Wed Sep 9 17:10:53 CEST 2015

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

> This file played 'Windows Media player', smoothly.

If it is smoother than with -threads 1 this would 
be a bug (or missing feature) in FFmpeg.

> I execute 'ffmpeg -i clock.ts -f image2 %5d.jpg' 
> from command line.
> jpeg file is not smooth seconds hand.

Please test:
$ ffmpeg -threads 1 -i clock.ts %5d.jpg

I believe this improves the output.

I added your sample to ticket #4122 (although I 
don't know if it is really related).

Carl Eugen

More information about the ffmpeg-user mailing list