XVCD's lowest bitrate.

[hamman]

What is the lowest bitrate you can use for a XVCD? Is it possible to fit 90 min on a 74 min cd-r?

[hwoodwar]

Yes, you can adjust the bitrate to fit 90 minutes on a 74 minute CD. You may, or may not like the results, depending upon the type of content or condition of the original file. The "X" formats are "non-formats" in that anytime you go outside of the specifications of the parrent format you are creating an XVCD (if mpeg-1) or XSVCD (if mpeg-2.) As a result there are no specified minimum bitrates. I suspect that theoretically it would be 32 bits/sec

[Donny661]

The lowest bitrate you can use depends on your player and what it can handle. For instance, my player won't play xvcds with bitrate much lower than the standard vcds. The pupose of standards is to make it able for a person or company to make vcd, svcd, dvd, etc. and be almost guaranteed it will work, and when you decide to leave those standards behind you can run into compatibility issues that will vary from player to player, and you have test your player to see what it is capable of.

[ZippyP.]

If you're going to try it (it works for lots of people) I recommend trying VBR as that will help preserve quality while lowering filesize.

Here's a guide: https://www.videohelp.com/forum/userguides/84759.php

[weeebl]

Yes, it is very possible. Use VBR, and it can look almost as good as a regular VCD, but it may not be compatible on all DVD players. Also, you can try Constant Quality, it works very well I have found, if configured right. When putting a lot on one CD, it helps a lot to check the "Soften Block Noise" box in the Quanitize Matrix in Tmpg. This will make the macro blocks you get in high motion scenes at low bitrates a little less visible. To find out what looks good, and what you like, it'll take a fair amount of playing around. Try encoding as small segment of video many different ways, seeing wich one gives you the best quality and compression. Lowering the audio bitrate to 128 or 96 can add a little bit more room for the video. This won't really have any effect, especially if you're encoding from a DivX source. Most Divx movies have an audio bitrate of 128, and some are as low as 56kb.


I have gotten as much as 180 minutes on one 80 minute CDR using the KVCD Low Bit-Rate Template. If you're going to experiment with fitting large amounts of video on one VCD I hihgly reccomend trying these templates. There is also a template for 360 minutes on an 80 Min. CDR, I haven't actually burned anything with it, but I've tried converting and it looks fine for low-motion low-detail video, such as animated TV Shows.

[hamman]

I encoded it with a bitrate of 900 and it fitted. Worked well on my DVDplayer.

[vhelp]

Hi hamman (and others) ..

There are a number of templates that speciallizies in fitting more time
on a CDR, in the Tools section, or go directly to Templates
and have a look or D/L all the templates and see for yourself, which one
works for YOUR given sitation, scenario or given requirement.

I highly recommend having a look at Kwag's templates..

Yes, if you want to learn more about fitting more time on a CDR/DVDR
media, have a good long visit over at kvcd FORUMS for more
info and a potential swollen head he he.. It's a great site w/ LOTS
of potential (and envelop pushing ideas) that never seem to end.
--> Visit the kvcd FORUMS

Note, it does require lots of reading, but worth it, if you follow
from the beginning, so you know where and how Kvcd came to be !!
If you just jump in the middle, you may not fully understand, and end
up becomming skepticle, never-the-less, lots peoples do it anyways, so
it's just my recommend - I did it.

For some real "classic" reading..

The birth of kvcd started somewhere's in y2flyy's thread,
where Kwag shared w/ us his modified GOP structure, and from their,
the sky became the limit w/ Kwag's templates and things:
HERE's HOW TO FIT 120mins movie on one cd in SVCD FORMAT!!!!
.
.
With over 80,345 reads, it's worth a look.

In fact, Kwag's templates are that good, that others' have actually
copy-cat'ed his, and are just renaming w/ their on name ie, MVCD and
AVCD are fakes or copies of Kwag..
So, watch out for those

Enjoy.
-vhelp