[FFmpeg-user] Questions about readout important metadata from DPX files ("logarthmic/linear") and recreate DPX with same metadata

[Christoph Gerstbauer]

> Imagemagick claims to support:-
>
> dpx:film.frame_rate
> dpx:television.frame_rate
>
> Graphicsmagick:-
>
> dpx:mp.frame.rate
>
Thank you, Tim!

I found also two at graphics magick:

dpx:mp.frame.rate
tv.temporal.sampling.rate

It quite interessting: sometime the first (dpx:mp.frame.rate
), sometime the second (tv.temporal.sampling.rate
) has a useable value.

I made different tests.
For example AFTER EFFECTS and ARRISCAN Filmscanner always writes into "tv.temporal.sampling.rate".
AJA Capturing cards write into "dpx:mp.frame.rate" (e.g. 25), into "tv.temporal.sampling.rate" they write "4.60285e-041".


Best Regards
Christoph