FFmpeg 0.9.4
Since* 0.7
#

Buffer video frames, and make them available to the end of the filter graph.

This sink is mainly intended for a programmatic use, in particular through the interface defined in libavfilter/buffersink.h.

It does not require a string parameter in input, but you need to specify a pointer to a list of supported pixel formats terminated by -1 in the opaque parameter provided to avfilter_init_filter when initializing this sink.