[Cin] Support for xml files from Premiere Pro, Da Vinci, Avid, FinalCut Pro

[Andrea paz]

Interesting to know that Cin-CVE supports metadata. How does the
metadata in Cin-CVE work? Can they be implemented in CinGG?

For ffmpeg I found these links:

https://ffmpeg.org/ffmpeg-formats.html#Metadata-1

https://wiki.multimedia.cx/index.php?title=FFmpeg_Metadata

It looks like there is support in ffmpeg. Do you think it's possible
to read them all in "Resouces --> Info" and maybe be able to add more
fields?