The E1000 recognizes the following video formats: MPEG-4, 3GP, RV8/9 (Real Video)

• MPEG-4
  • MPEG is a world standard for video.
  • MPEG 4 is not as common as MPG1 (videoCD) or MPG2 (DVD)
  • Max 25 fps playback
  • Max 15 fps recording
  • Max 256kb/s
  • Max resolution: 320×240
  • H.263 Baseline (what does this mean?)
• 3GP
  • 3GP is a container format (like Quicktime and AVI)
• RV8/9
  • Real Video format
  • Max 15 fps @ 128kb/s
  • Max resolution: 176×144

For much, much more detail please see the official Motorola multimedia documentation.