Digital video on a CD-ROM?

Skyar wrote on 3/12/2002, 2:32 PM
I've made some video CDs using VHS video and can get about 75-80 minutes
on a disk. My question regards using DV on a CD-ROM. Since it is a lot
higher quality how much time would I be able load? About 35-40 minutes?
In MPEG-1 format? Windows Media? Real One Player? Quick Time? Anyone
have any ideas? I know on a DVD dics I can get about 2 hours. Thanks.

Comments

Former user wrote on 3/12/2002, 9:13 PM
If you are asking about VCD's (which are formatted to play on a DVD player), you will get the same amount of time with DV as you do with VHS. The reason is that a VCD standard disk has a specific screen resolution and bit rate. The bit rate determines how much information a CD can hold. At the standard VCD rate, it is approx. 70 minutes. At SVCD it is approx. 20 minutes. A VCD is MPEG 1 format whereas a SVCD is MPEG 2 format.

If you are just talking about a Multimedia CD, which is not formatted for a DVD player, then you will not get much at DV quality on a CD. DV quality uses approx. 4 gigs per 18 minutes, and since a DV only holds around 700 meg, you can do the math.

Hope this helps some.

Dave T2
Chienworks wrote on 3/13/2002, 3:58 PM
You can fit about 3 minutes of DV on a standard CD.

For other formats, add the audio & video bit rates together (for example, 1125Kbps video + 224Kbps audio = 1349) and divide this number into 89,000 (for 650MB CDs) or 95,000 (for 700MB CDs) and the result is the approximate time in minutes you can fit on the cd (for example, 89,000 / 1349 = about 66 minutes).