libavfilter multiple input

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libavfilter multiple input

Samuel POTENCIER
I'm doing picture in picture with libavfilter overlay.
The input file (AVI) comes with mpeg2 streams (directly from the 2 cam recorder).
At this time, I run one time ffmpeg to extract the 2nd stream and then a second time to do the overlay.

Is there any possibility to do this in one time, passing to the filter a label like [in:0] or [in:1] to specify wich stream it has to work with ?

Thanks
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