[FFmpeg-user] Asynchronous overlay

[Alexandre Ferrieux]

Hello,

I'd like to use the overlay vfilter to lay out side-by-side several video streams; however they have wildly different 
framerates, some of them varying.

What I'd like to do is a kind of async overlay: that each source be decoded into the overlay buffer at its own rate, and 
that a separate thread encodes 'snapshots' of this overlay buffer at a regular, independent rate.

Is there a way to tell ffmpeg to do this ?

-Alex