[FFmpeg-devel] Filters

Clément Bœsch u at pkh.me
Fri Jul 18 13:38:41 CEST 2014

On Fri, Jul 18, 2014 at 12:08:41PM +0100, JULIAN GARDNER wrote:
> How do I fix a filter so that it takes in 1 input but has no output, this is part of a project and this part is a detection filter, it does nothing else.
> The problem at the moment is that with the current filter, based on drawbox, is that it produces an output which i need to the use overlay to dump.
> Is there a video filter which has 1 input but 0 outputs

Just make a passthrough filtering (ff_filter_frame(in)), and do not map
its output

Clément B.
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