G'day

Unfortunately there's lots of different encoders for jpg/jpeg format, mainly PC ones. The p**n industry use them a lot, for instance.

Some simply won't open with QuickTime, but you usually get a message such as 'QuickTime is missing a component etc.'.

jpeg2 on QuickTime?? You need to buy the license, as Apple have to pay for each distribution they pass on.

They all show as jpg or jpeg.

Regards

Santa