[FFmpeg-user] frame->display_picture_number is always 0

[Ulf Zibis]

Hi,

in a filter context I'm reading AVFrame field display_picture_number. It
is always 0.
How can I get this field filled with valid data?

The field AVFrame->coded_picture_number has valid data, but the numbers
are slightly unordered, so I want to use field display_picture_number.

Thanks,

-Ulf