I have a load of .mov files which I want to batch convert and join into one big file that I can play on my iphone. I thought visualhub would be perfect for this but when I try to process them I keep getting this error when it is trying to convert the audio... An error prevented conversion from starting. Explanation: /temp/..../32445.wav Has anyone else experienced this error and found a work around. Maybe skipping the audio conversion all together? I ran the same files through handbrake and they worked found. The only problem with handbrake is there is no way to batch convert, or also join the files afterwards. At the moment my only solution is to convert the files individually with handbrake then run them through visualhub to join them. Which causes two problems... 1. It takes forever. 2. As I am effectively processing the files twice I presume I am degrading quality? If this is the only solution, am I able to run the handbraked files through visulahub with only the joining process taking place? Saving time and excess conversion. OR is there another program that I can use to batch convert .mov to .mp4 AND join into one single file? Sorry, lots of rambling questions there but hopefully someone can lend some advice. Thanks.