The E63 video player represents a bridge era: before dedicated media phones (Nokia N-series) and just before the iPhone 3GS normalized good on-the-go video. It wasn’t good by modern standards, but for a $250 business messaging phone, being able to watch a DivX rip of The Office during a lunch break felt like minor magic.
If you wanted to watch video on the E63, you weren't watching 720p. You were watching files optimized for the "RealPlayer" generation.