Color range parameters: not given in the form <TID>:n (argument was '0:18446744073709551615')

this error is preventing me from multiplexing my videos, please help asap

Welcome!

This is an interesting bug that isn’t as easy to fix as I’d like. I’ll work on it.

For the time being you should be able to work around it by selecting the video track & then removing the erroneous entries from the “Color information” track properties before muxing.

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