Hi i have a MKV which i am doing a passthrough to MP4 with quicktime Pro, I seem to have a good MP4 file which works fine in Quicktime and itunes before touching it with metax. When i tag the show in metax it seems to corrupt the file and i cant do anything with it has anyone got any ideas. Is there an alternative to Metax i could try? It drives me mad just putting the file in to itunes without all the correct tags. Has anyone else experienced this? I have attached some pics of what i am doing in quicktime i really do not want to go through the re-encoding process as i am on a imac G5 and this takes for ever.