bits/(Pixel*Frame) + 3 cd rip

[X-Nemesis]

I know the values that should be maintained for bits for a 1 and 2 cd rip...but what should I look to keep this # at or around for a 3 cd rip?

Also...I want to be able to watch all my rips on my tv so what kind of settings should I be looking to have so that I can have better than vhs quality for this?

:o

Thanks

[manono]

Hi-

set the w-modul to 4 and the h-modul to 2

For compressibility and compatibility reasons I wouldn't recommend doing that. Leave them at default, or at most make them both 16.

the only reason you may want to do a compressibility test is to see if the movie can fit on 2 cd's.

I've done several 3 CD movies where I had to do a Compress Test to choose the resolution. Seven Samurai and Lagaan come to mind. And although I haven't ripped Saving Private Ryan, I believe it's another example. I have encoded some silent film shorts recently where the first pass size was over 1 GB for a 20 minute short!

As for the original question, I think you'd hope to show the same bpf values as recommended for a 2 CD rip before then running the compress test to confirm it. Or to see, as Ye110man mentioned, if it can be done for 2 CDs instead. If you just want better than VHS, then the horizontal resolution should be, what, over 480 or so?

[hakko504]

Originally posted by manono
If you just want better than VHS, then the horizontal resolution should be, what, over 480 or so? AFAIK VCD resolution was chosen because it would be mathematically equal to VHS quality. Now this isn't quite right, because MPEG spreads the errors evenly over the picture but VHS (and BetaMax and other analogue tapes) tries to keep the picture sharp in the middle of the frame, but blurry at the edges. So I'd say that you need something like 15-20 % higher resolution than VCD in order to beat VHS tapes (new ones that is, a tape played 100 times is quite likely to be awful.)

[manono]

Hi Ye110man-

All that I know about this subject I've learned from TheWEF. But as I understand it, because DivX is compressed in 16x16 blocks, by using mod 16 you'll get better compressibility. Actually, there's evidence that by using Mod 32 for both height and width, the compressibility is enhanced even more. If you want to make your way through this long Thread (http://forum.doom9.org/showthread.php?s=&threadid=18277&highlight=Hmod) from a while back, you'll find some very useful information.

As for compatability, there are many (especially older) vid cards out there that choke on those low mod numbers-they might give you an upside down or scrambled picture-I believe that Matrox cards can display the problem. So, they might work well for you, but they won't for every one.

[hakko504]

Originally posted by manono
I believe that Matrox cards can display the problem. Matrox cards does indeed have a problem with some resolutions. Not actual playback on monitor, but the TV-output requires mod-32 width and mod-16 height to work correctly.