Originally Posted by CliePet
> The best advice is to try encoding a lower bit rate for the movie.
Hi! I know you have hugely more experience in this than me, and I have a theory I thought you may already have tried?
I have an NZ90, overclocked to 265mhz with Lightspeed, with TCPMP, and a 1gb CF Card (no MS). Note: if I overclock every app, it seems to lessen the movie jerkiness. I don't know if that's because some background processes are also being accelerated, or if it's just my imagination.
My 300kbps 320x176 xvids (64kbps mp3, 22050hz) pause and skip every few minutes or so (sometimes more often). That is, the movie will pause on a frame, the audio will continue, and the movie will resync in 30-60s and continue until the next pause.
Compare this to watching something encoded for my computer on the NZ90 at about 700kbps 720x400 128kbps mp3. It drops frames, but it rarely actually paused in the same way as the 300kbps does.
- the pauses at 300kbps are due to a delay in data being read from the card, perhaps due to an initial read-delay as the card mounts or something?
- as 700kbps is not pausing, perhaps this is due to a sustained read on the card, avoiding the read-delays on the card between separate reads;
- therefore, perhaps there's a magic kbps number that will cause a sustained read from the card that avoids the pauses in movies while not causing too many frames to be dropped.
- how much free RAM is recommended in the NZ90, assuming that TCPMP caches read data to RAM.
- I have considered a Kingston Elite Pro or Sandisc Ultra II CF Card, but as the VFSMarks for my existing CF card are all much better than the MS Pro, a faster CF Card may not help me.
What do you think?