James Almer (12023-04-29):
> It should be exporting frame metadata

Not really. Exporting information to frame data is a hack, “this looks
pointy, we have a hammer, let's nail it”.

It only works if the data is very flat.

It does not work for data that comes at the end of the stream.

It still requires a way to get the data out in a parse-friendly syntax
when the program running is not ffprobe.

Having an API and user interface for filters to return structured data
is one of the reasons I want this API in libavutil.

Regards,

-- 
  Nicolas George