[FFmpeg-devel] Compositing streams side by side

compn tempn at twmi.rr.com
Wed Nov 16 19:11:25 CET 2011

On Wed, 16 Nov 2011 18:43:05 +0100, Stefano Sabatini wrote:
>On date Wednesday 2011-11-16 06:39:12 -0500, compn encoded:
>> On Wed, 3 Aug 2011 10:25:27 -0400, Matthew Brown wrote:
>> >I have a video conferencing application I am working on, and we need
>> >to take the two input streams as received by the Wowza (Flash-type)
>> >server and join them together side-by-side, saving that new joined
>> >video out to a new file for archive. The Wowza folks point us over to
>> >ffmpeg for accomplishing such a thing. Is ffmpeg the answer on this one?
>> there are instructions for using mencoder here:
>> http://www.mtbs3d.com/phpBB/viewtopic.php?f=27&t=4521&start=30
>> and ffmpeg + imagemagick and some voodoo here:
>> http://linux-tipps.blogspot.com/2011/06/create-side-by-side-or-top-bottom-3d.html
>> a way to do this in one step would be useful. :)
>libavfilter + pad + overlay, although a more convenient compose filter
>would be nice.

could you make a full working example command line out of two streams
for us libavfi newbs?

maybe put it on the wiki:


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