Harry Potter in MP4 VBR
I had a few Harry Potter DVDs ripped to hard disc still (I finally read the books over two weeks last July, and had my daughter's DVDs on an SD card just in case I wanted something to view over vacation), so I tried some renders.
This is "Prisoner of Azkaban", from the US DVD. Using Vegas Pro again, MainConcept AVC/AAC CODECs, I converted to 856x480 @ 23.97fps, using 2-pass variable AVC Level 3.x compression, with an average of 512Kb/s, and a peak of 1Mb/s, Base profile as before. Finished size is 648MB. It looks pretty fine on the DROID... I can see a few artifacts here and there, but overall, very nice, and not too gigantic for a feature film, but I do look forward to 32GB microSDHC cards (and still wonder if an SDXC upgrade will be possible... should be).
Look good natural sized on a PC, too, but a bit overcompressed for joy fullscreen (24", 1200p). I gather Apple's 640x480 videos are encoded at around 1200-1500kb/s, with the idea of being reasonable to display on a television. I'm more looking at what I can keep around in limited memory to show off the DROID
The audio is in AAC at 16-bit, mixed down to stereo from the AC-3 5.1 (I drop the center channel a bit, keep L+R, and mix a lowered version of the rear channels in... usually sounds pretty good), at 128kb/s. Keep in mind, AAC offers about twice the coding efficiency of MP3, so you could actually lower this to 64kb/s (which is usually the best you get over digital radio, either AAC+ or Ibiquity) and it would still sound pretty reasonable.
Next test was 848x368... this eliminates letterboxing encoded in the video, and give me /16 dimensions both ways. I dropped the average to 400Kb/s and the peaks to 800kb/s... this gave me a 534MB file. This worked great, too.. the player automatically generates the letterboxing. Technically, this ought to be possible at 720x368, but only if the player respects settings for non 1:1 pixel sizes... otherwise, this assures you get the fullest possible screen for this aspect ratio (2.35:1 here, versus nominally 16:9 for full screen).
If you're having problems, try these settings on your encoder, and make sure you're at Base profile, not Main or High.