[FFmpeg-user] Concat limited to certain file types?

[Roger Pack]

> Yes, I was also trying to add the scale filter to the complex_filter
> definition, but did not succeed. Tried :; space and now also the , as
> separator, but nothing seems to work. Maybe it is Windows specific
> because the documentation uses single quotes, which do not work under
> Windows either. Whoe knows what else does not work under Windows. I will
> fire up my Ubuntu once again.

What is a command line that failed?
-r