Hey video conversion guys,

I know that the subject isn't really related to converting, but I tried posting this question on newbie section and didn't get any replies.
Since you've been so helpful here, I wanted to check if you could help me out.

My work is closing a deal with Amazon Channels and I need to send them video files within these specs

As far as videoconversion goes, I am able to convert files using Adobe Media Encoder, Handbrake or ffmpeg.

But they also require metadata using Movielabs MMC and MEC standards

I wonder if you are familiar with any tools to build these metadata files or how to handle those, pointing me in the right direction.
I've used only XML as a metadata file format. Thank you so much,