Thanks that was very helpfull. So with a propress conversion you just decompress those hidden frames and pixels (an ideal RAW footage) and recompress them in a more editing efficient codec. Makes sense.
OOwww.. Didn’t notice any problems so far. Guess i haven’t been on it for a long time to find them out. Thank you for your input. Is it normal that the conversion to proress creates double the size of the original file?