[FFmpeg-user] crop detect not working

[Carl Eugen Hoyos]

Elliott Balsley <elliottbalsley <at> gmail.com> writes:

> I’m trying to use the cropdetect filter on some JPEG images

The filter is not made for images but videos, you can use the 
following workaround:
$ ffmpeg -loop 1 -i image -vf cropdetect -f null -vframes 3 -

Carl Eugen