Max bitrate for CD!?

[Wizeman]

Hello all.

Since my DVD burner doesn't arrive for yet another two weeks, I have been experimenting using the XSVCD format, and even DVD (burning a DVD image smaller than 700MB on a CD-R, that neither my CD burner or DVD player has any problems with). It seems that around 4500 bitrate, high quality source "drags", and turns slow-motionlike at times, causing the sound to stutter before catching up. And 6000 bitrate is like that non-stop. I've previewed all the files on the computer, and they look fine. Could it be that the lower density of the CD media makes it hard/impossible for the DVD to manage reading the high bitrates? Or am I missing something fundamental here?

Hardware/Software used:
iBook G3/500
BitVice 1.2.51
MissingMpegTools (why do I always get a Bus error when converting to MP2? Oh well, tried AC3 too, but got the same audio stuttering results when the video starts lagging)
DVD Studio Pro
Toast Titanium

/Wizeman

[Mavrick]

The maximum bitrate of an XSVCD is determined by your DVD player. I make XSVCD’s at a VBR of 4000 and they play fine in my RCA 5240p.

Capturing Hi-8 and converting to an MPEG2 with that bitrate yields a very high quality image, like a DVD. The downside with a VBR of 4000 is, you can only get about 20-25min per CD. But with that qualtiy, I'll take it!

[Scobo]

My player (Logix 3000) has a maximum of about 5000 kbps. Any higher than this and I get stuttering playback and sound drop-outs (even with miniDVD).
You'll just have to experiment with different bitrates till you find the max for your player.

[sterno]

Could it be that the lower density of the CD media makes it hard/impossible for the DVD to manage reading the high bitrates?

That is essentially correct. A higher bitrate means that it has to read more data in the same amount of time. There is a limit to how fast the DVD player's drive can turn the disc, and it's usually much lower than the speed of a modern CD-ROM.

[jkl]

sterno is right, problems at high bitrate seems to occur because the dvd player is having a hard time maintaining the rpm's needed to read the data.

[Wizeman]

Thank you all. I checked w the details for my player (Denver DVD-311) here on the site, and it seems the max bitrate *is* 4000 for video when using CD as the carrier. Was kind of hoping to cram even more in there, but hey - I also read it supports DVD-SVCD and a bunch of other nice stuff so I'm not complaining

On a sidenote, it feels wonderful to find such a live and vibrant forum. Posted before I went to bed, and when I woke up there was already a bunch of replies. I'm moving in

/Wizeman