[Libav-user] How to get the byte position of a just written av_write_frame?

Strahinja Radman dr.strashni at gmail.com
Wed Jan 29 08:51:44 EET 2020

> I've tried looking for callbacks, looking at the packet itself, looking at
> the AVFormatContext, AVIO, AVStream, etc. And I can't find a way to do it.
> Would be really nice if av_write_frame would set the new pos after writing
> the packet to the file.

I am guessing that FLV container has a known header size. Maybe you can use
size value of a AVPacket + header + all the AVPackets before and based on
calculate what your offset for that IDR packet is? Just an idea, not sure
if it will work.


Strahinja Radman
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