Great we can use third party codecs now.  I worked on a project with PP2010 that required hundreds of clips be rendered and had no problem using Xvid as the clips all ranged between 60-150 frames...

Was asked to re-render 108 of these clips with a different camera position a couple months ago, and began doing that about a month ago.  Was very annoyed to see that Xvid was no longer an option and I'd have to render frames.  Then learned that Poser's jpegs are now the progressive version which Virtualdub would not load, and chose to render pngs.  Just one of my four folders for this project is 2.72 GB.  2.71GB of that folder are .zips of each of the 34 clip's frames.  Tha actual Xvid files are only 5.2MB for 34 clips!  Nice to know codecs are useable again.  I wonder, had I not been forced to work this way if my harddrive which died last week (taking 3mos unbacked up work with it) would have made it one week longer for me to complete this project (at which point I would have backed up that work once I was able to free the space all of those frames were taking up).  Oh well.