[FFmpeg-cvslog] lavfi/overlay: switch to filter_frame API

[Nicolas George]

Le septidi 17 nivôse, an CCXXI, Michael Niedermayer a écrit :
> i suspect this commit or something else recently caused
> CID966655 Use after free 
> 
> I did not investigate if this is a real bug or false positive

I believe it is a false positive, unless a filter returns AVERROR(EAGAIN)
from its filter_frame method, which it is not supposed to do. Maybe adding
av_assert1(ret != AVERROR(EAGAIN)) near the end of ff_filter_frame_framed(),
after the call to the method, would silence it.

Regards,

-- 
  Nicolas George
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