VCD Smaller than regular files?

[Reallyscrued]

in dvdx, i encode xsvcds, 480x480 2500mb...but only mpeg1. i can split the file size up to 790 megs for nero to say its under the 702 limit. Why is that? i began to figure this out when i made a 700 meg split size and it ended up to be 645 in nero. so...700 is to 645 as 790 is toooo...voila 700. it works too, no skips in my jvc xv-523gd, a full 790 megs...sorta. can anyone explain this to me?

[jaxxboss]

Huh ?

[VCDHunter]

Huh ?

I think he is asking why a 790 MB file will fit on a 700 MB CDR when burned as (S)VCD . . .

[jaxxboss]

If that is indeed the case then he should know that time and not data size is what counts when making a vcd. 80 min disc=80 min put on it. Of course u can always over burn 2 or 3 min depending on the disc.

[ZippyP.]

If that is indeed the case then he should know that time and not data size is what counts when making a vcd. 80 min disc=80 min put on it. Of course u can always over burn 2 or 3 min depending on the disc.

No, it's strictly data size that counts. You can make a 100 min. XVCD fit on one 80 min. CD, I do it all the time. I don't use the standard VCD bitrate.

An 80 min. CD holds 700 MB in regular data mode, VCD's are burned using mode 2 which does not require on-disk error correction so a typical VCD can actually hold 800 MB.

[hwoodwar]

Jaxxboss stated: "If that is indeed the case then he should know that time and not data size is what counts when making a vcd. 80 min disc=80 min put on it. Of course u can always over burn 2 or 3 min depending on the disc. "

I disagree totally. If that was the case then I should be able to make an 80 minute VCD compliant MPEG file and drop it down to a standard 70minute/700mb CD, record it as a data CD and it would fit and work. Try it it will not. Data CD's are recorded mode-1. VCDs and SVCDs are recorded mode-2, which allows for approximately 800meg to be stored. I've read that this is because mode-1 uses some embedded error correction and mode-2 has no embedded error correction. A VCD compliant mpeg-1 file uses a fixed video bitrate of 1150kbits/sec, adding audio and dividing that into 800mb you get approximately 80 minutes of play time.

[jaxxboss]

Ok, BOTH you 2 are wrong. Simple really and dont make it any harder than it needs to be, Ok. A VCD can be made on an 80 min disc and be 80 min long (+ or -). Now, whatever you wanna do with bitrates is all well and good, but it is Not a VCD

[ZippyP.]

i encode xsvcds, 480x480 2500mb...

and

You can make a 100 min. XVCD fit on one 80 min. CD, I do it all the time. I don't use the standard VCD bitrate.

An 80 min. CD holds 700 MB in regular data mode, VCD's are burned using mode 2 which does not require on-disk error correction so a typical VCD can actually hold 800 MB.

I agree that an 80 min. VCD is about 800 Mb and will fit on an 80 Min. CD but the original post wasn't about fully compliant VCD's.