On 29/12/11 15:10, Soren Dreijer wrote:
Thanks, Luca.
I need to write both audio and video, so I *have* to use interleaved
frames, right?
Depends on your container. You might not want to use the default frame
interleaver in some cases.
I was trying to read up on the pts value yesterday, but I'm a little
unclear what to set it to. I have the time the packet was captured (in
milliseconds) and the time of the first packet in the stream, but I'm
not sure how that fits in with the AVStream->time_base units. If I'm
capping at 25 FPS, do I simply calculate (from my own timestamps)
which frame I'm passing the encoder?
you decide the timebase and put the time reference in timebase units,
that means that if the timebase is 1/1000 s and your frame is around
1/25 s, your pts would be about 40 timebase unit apart each other.
What if packets are dropped? Do I need to manually feed the encoder
the previous frame for all the dropped frames, or does the encoder
know how to handle this case if there's a gap in the pts value?
the encoder does not care about timing. It process frames as they go.
lu
--
Luca Barbato
Gentoo/linux
http://dev.gentoo.org/~lu_zero
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