Hi Bernhard,
>after real frames are handled did you call avcodec_encode_video2 with NULL as
>frame as many times as got_packet returns true?
>
>Depending on codec you have to "flush" encoder several times, until all frames
>have gone to output.
Success!! Thanks!
But I do need one clarification: it just so happens that I have 36 frames, half
return got_packet=0 and half return got_packet=1. So I called
avcodec_encode_video2 18 times with a NULL frame. So here are my questions:
1) You mention I call this function with a NULL frame as many times as
got_packet returns true (=1). Shouldn’t it be the other way around? That is, I
should only flush as many times as got_packet returns false (=0)?
2) Is there a way to know exactly how many times I should call this function
with a NULL frame? I can certainly count the number of got_packets={0 or 1};
but I’m wondering whether the ffmpeg api wouldn’t have that information itself
in a way that would be more self-contained.
3) Is it safe to call this function with a NULL packet several times – even
more than necessary to flush everything?
4) Finally, is it safe to call this function several times for other codecs –
even if nothing needs to be flushed? In other words, would ffmpeg treat this
call as a no-op if it’s not necessary?
Thanks again!
-Arthur
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