[FFmpeg-user] Reuse a stream multiple times?

[Lou]

On Fri, Nov 20, 2015, at 12:10 PM, Dereck Bridie wrote:
> Hi all,
> In my application I have a stream which I'd like to apply multiple crop
> filters to and animate them separate from each other.
> 
> I was hoping that it would be possible to use a filter like "[0,0] copy
> [copy1] [copy2]" but this doesn't seem to be valid. Is there a filter
> that
> allows this?

See split.
https://ffmpeg.org/ffmpeg-filters.html#split_002c-asplit