Movie size

[stompinne]

Many movies (+/-) are compressed at a size to fit on 700mb cd-r (more or less), how can i fit my captured movies at such a cd-size? I tried rendering to some formats, but it always ends up in gigas. How to do this?

[yoda313]

Hello,
Your video bitrate is TOO high. Use the bit rate calculator in the tools section on this site. It will tell you what to set the video bitrate to for many formats. Also if you use variable bit rate I think that makes it larger than constant bitrate.
Kevin

[sacajaweeda]

VBR is the way to go as it makes the most efficient use of your available bitrate, whereas CBR is always going to give you a certain size file for a certain length video clip no matter what, whereas with VBR you can stretch it and gain a little (many times a LOT) more. Those figures the bitrate calculator spits out are for VBR settings, not CBR.

[bugster]

Hello,
Also if you use variable bit rate I think that makes it larger than constant bitrate.
Kevin

Not True.

VBR is the way to go as it makes the most efficient use of your available bitrate, whereas CBR is always going to give you a certain size file for a certain length video clip no matter what, whereas with VBR you can stretch it and gain a little (many times a LOT) more. Those figures the bitrate calculator spits out are for VBR settings, not CBR.

Not quite right either.

The size of an mpeg file depends on just two factors. These are the playing time and the bitrate. Noting else matters. The figures from a bitrate calculator should be the ones used for the AVERAGE bitrate when using VBR. Using this same value for CBR will give a file of the same size (give or take a very small error margin depending on how well your encoder sticks to the supplied values). VBR does make more effecient use of the available bitrate. and is preferable when you want size over speed (it always takes longer to encode VBR than CBR).

Hope this helps.

[DVD_Ripper]

You may want to look at a resolution of 352x480 (know has 1/2 D1) .... you can enclode your videos at that res at about 2000 to 2500. They should look ok and you will get, maybe 35 to 45 minutes per 700 Meg CD.

[yoda313]

Hello,
Sorry guys I though variable bit rate meant larger size since it would fluctuate with the content (hence the term variable). Well now I know better, thanks.
Kevin

[Joex444]

Keep in mind the size of the audio when you're doing all of this.

But if you encode to MPEG-4, Xvid, you can specify how big you want it to come out to be (in KB). So, if you have a 1 hour video you want to fit on 700mb, figure out how big the audio is, subtract it from 700mb, and put that in Kilobytes. No problems, no guessing, quite reliable.

BTW, if you convert to VCD/SVCD, you can fit 800mb on an 80min CD. There's less error correction on those formats than a data CD format so you can get the extra 100MB of space. Again, be sure to include space for audio when you do SVCD. If you do VCD, it doesn't matter, because it is such a rigid spec that an 80min CD holds exactly 80min of stuff. It is only when you break the standard that you can fit more or higher quality stuff (essentially, more minutes or more quality), but then it is not a VCD :) .