I am just wondering if the high bit rate of pro tune gets destroyed when converting to prores 422 and I should be doing my corrections on the raw file before the transcode?
Is the higher bit rate preserved once converted to prores 422?
Standard ProRes 422 is fine for GoPro footage, ProRes 4444 would be complete overkill unless your doing chroma key work but even then ProRes 422 HQ would be adequate. Of course if you want no compromise just use 8-bit uncompressed 4:2:2 😛