From my experience .mxf fi

From my experience .mxf files show the best once converted on YouTube. The quality of MP4 and AVCHD seems to be greatly compromised in comparison. Even though it “processes while uploading” it only live processes the 240p version, and then does the rest of the upscaling processing up to 1080p once the entire video has been uploaded. I am not sure if this is what you mean though.