Trying to get my head around whats safe and whats not to store in the GOPBuffer is tricky. Im tempted to re-write that whole bit.
Ill do the iDCT pointer stuff as thats a good idea indeed.
I had a look at the dequant functions ages ago. If you find any speedups or improvements let me know
Anything you can give to it would be very appreciated Tom
Please post here if you come with any improvements
Cheers,
-Nic