I recently was on a show where I needed to import many video clips into my 425 to play back during specific times in the event. I rendered all of my clips out as 1280X720 HD MPEG2 files out of Adobe Premiere Pro CS5. The 425 Project was a 720p Project. I then transferred my clips from a flash drive to the 3play 425 and used the import media to bring them in to my project.
Some clips would stutter a little bit (most noticeable on lower third crawls), and video clips with audio would have some of the audio drop out at random times. I checked the original files on my laptop and they all played smoothly. I re-rendered the video clips with audio in Adobe Premiere CS5 as H.264 files, reconverted them using the import media and they then played all the audio fine with no drop outs.
Any suggestions on the best file type to render to straight out of Adobe CS5 before importing it into the 3Play?