[libav-api] Overlays and the overlay AVFilter

Luca Barbato lu_zero at gentoo.org
Sun Dec 11 23:08:57 CET 2011

On 11/12/11 22:49, Evgeny Yakimov wrote:
> Hello
> I need to overlay some images (and potentially videos) to a live input. I
> would also, if possible like to avoid copying the original frames and
> instead applying the overlay in-place, Further more, one of the additional
> requirements of my application is that it should allow for dynamically
> adding/removing overlays on the fly.

AVFilter currently does a lot of copies for a reason or another. =\

> I was wondering if the overlay video filter would let me do this, and if
> there is any documentation/examples available on how to use the filter,
> hopefully something more the avfilter.h

beside using it the same way avconv or avplay does use it there isn't 
documentation =\

I might try to bake something up soon but not sooner ^^;



Luca Barbato

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