[FFmpeg-devel] [PATCH 06/17] lavfi: add ff_inlink_process_timeline().

[Clément Bœsch]

On Fri, Dec 30, 2016 at 12:37:41PM +0100, Nicolas George wrote:
[...]
> In fact, I do not see how timeline could make sense for a filter with
> several inputs. "Disabling" a filter means replacing it by the
> pass-through filter "null", but it has a single input and output.
> 

You want a watermark to be effective only in a timerange, the second input
(the watermark) would get ignored outside that range, and the first one
pass through. This would be filter specific (FLAG_SUPPORT_TIMELINE_INTERNAL).

That's how overlay and dualinput actually works with a given outlink,
doesn't it?

-- 
Clément B.