I use a macpro 2,6GHz with 5Gb ram and Second HD of 500GB with OS 10.4 , QT 7.3.1 and M8 v2.5.
I'm looking to make multi outputs on 3 video projectors which are in 1440x1050.
My medias are 2160x540 (as 3 beta SP tapes in NTSC). it's not easy to find the good codec to keep smoothness and quality. I'm trying with Photojpeg at 75% and Mpeg4 at 75% also.
My medias are made in after effects and are about 5min long.
I was succesfull making the medias in 1440x360, in "animation" but the quality was lower than what we want.
I will make test with photojpeg and mpeg 4 this afternoon. I'll tell you this vening how it is