Having realised that QT6 is now out (that's very early!) I downloaded and installed it, and paid another Â£25.00 for another Pro Key (That's the third one I've bought now...) Anyway, interestingly enough on2 just played straight away, with no problems. So then I set about messing around with the MPEG4 codec, and early signs are pretty good. I took Ryans Alternate Lightsabre trailer, which is a 3.5MB in Sorenson. First I compressed it using good old on2 and got it down to 2.5MB - same quality as the original. Then I tried it with MPEG4, first at 100% on the slider, which produced a filesize of 5.7MB and the quality was (unsuprisingly) as good as the original. Then I tried it at 50% quality, and the filesize was 1MB - but the quality was pretty ropey, but then I tried it at 65% quality, and the filesize was 1.6MB and the quality was pretty good, not perfect, but good considering the filesize, I'm sure with tweaking along the quality it will get better. So, this really is a big break for the fanfilm makers. It's over twice as small as the Sorenson equivilant (which is a BIG deal when you have a film like, say, the Formula) and the quality is up there with the best. Plus if it's a standard codec with Quicktime you won't have any of the compatibility I can't get on2 to work issues etc. So I'll have to see. It's definately a serious contender, and you may well see the Storm Ahead Sorenson trailer be taken down from my site soon, and an MPEG4 version in it's place. I wonder what it's like full screen, whether it plays well on slower machines etc (a problem on2 had for some people) So far, so good though. Just another reason for me not to shell out for the Sorenson Developers edition One thing that definately IS big news is the ability to encode sound in MPEG4 without needing something like Cleaner (for mp3) or a ropey workaround. So for me, it's goodbye to IMA:4 and the Q-Design that comes with QTPro, and hello MPEG4. I have had a go at compressing the trailer using MPEG4 video and sound, and the results are pretty good, although not breathtaking. If you are so inclined, have a look [link=http://homepage.mac.com/daftmaul/FileSharing1.html]here[/link] and maybe download the trailer. Truthfully, I still prefer the quality of the on2 version, so I'll be interested to hear how people get on with the full screen viewing of this MPEG version.