Adobe Premiere 14.3.1 does not interpret Canon EOS R5 422 footage properly

Question

I have a Canon EOS R5 which can shoot video in HEVC or RAW 10-bit 422 format. Premiere can load all its files fine, but when I examine their properties inside Premiere Pro the HEVC and ALL-I HEVC files show as 10 bit 420 files. Not 10 bit 422. The RAW Files don't actually show the color depth or chroma information. All the files seem to load and edit fine, but it seems to be misinterpreting the 10 bit 422 HEVC files as 420.

Is this a bug, does it affect my color grading, or is this some intentional conversion that Adobe is doing with these files internally?

Sumeet_Kumar_Choubey · Accepted Answer

Hi ruzun,We're sorry about the poor experience. We're aware of this incorrect interpretation of chroma subsampling and are currently working to get it addressed as soon as possible. Thanks for your patience.Sumeet

Michael Grenadier · Answer

have you tried davinci resolve for color grading?  there's a pretty amazing free version.  You can edit in premiere (which is a much better editor) export an xml from premiere and import to resolve.  The workflow can be a little tricky and is a sh*tstorm if you have spanned clips but worth a shot.

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