[FFmpeg-devel] [PATCH] lavf: Add flags for how duration is estimated

[Michael Bradshaw]

Hi,

Attached patch adds 3 flags for AVFormatContext.flags so users can
know how the duration is retrieved and how accurate it is. I have a
use-case where I need to know if it's estimated from the bitrate.

Please review. If someone has a better idea of how this can be
implemented, I welcome their input.

Thanks,

Michael
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