[Libav-user] the usage of av_interleaved_write_frame() to flush interleaving queues

[qw]

Hi,


I have one question about the usage of av_interleaved_write_frame(). I have read the function's description from '
http://ffmpeg.org/doxygen/2.8/group__lavf__encoding.html#ga37352ed2c63493c38219d935e71db6c1', and know if pkt equals NULL, av_interleaved_write_frame() will flush the interleaving queues.


How many times I should call av_interleaved_write_frame() to flush all buffered queues? If av_interleaved_write_frame() is called to flush, How do I know whether there is any buffered queue or not?


Thanks!


Regards


Andrew









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