Originally posted by IanS
As we're on the subject, and as Pyro is a good source of information (and a nice guy even if I do get on his nerves a lot)...
Is there a maximum resolution imposed by the CDXL format, and is it limited to 256 colours?
Does the SSA format look any good on a PC monitor in non interlaced mode?
CDXL can do HAM6 4096 colors and I think if you have an AGA machine you might even be able to create HAM8 256,000 CDXL animations but I have not tried to create anything in HAM8 with CDXL. I know for CDTV the max res and colors was 160x100 in HAM6. I will have to check on if this was the highest res that the format allowed. You might have more flexablity if you were creating CDXL content for CD32. I will shoot Carl Sassanrath an e-mail he created the CDXL format and I am sure he would not mind sharing some info with us about it. Check out aminet for some cool CDXL animations and tools like XLToolKitGUI.
I will give some SSA animations a try on a PC monitor and check the quality. I have to warn you though I am rather spoiled now and my animation formats of choice are Video Toaster Flyer Format and Uncompressed Video Toaster  RTV animation files. Both of these exceed broadcast quality so SSA animations might not look very impressive to my eyes today.