Whats the highest Kbs I should use on a DVD disc?

[jesse40902]

The file size is 700 meg.

Resolution: 480x280

framerate : 25 frames per sec
date rate: 129kbs
video sample size: 24bit
compression: xvid


Whats the minimum kbs do i need for this file? Can i fit two of these similar files sizes on one DVD disc


(sorry i made a topic here but I lost it....i dont know how to track it)

[zoobie]

minimum?
find your topic by searching your name

[jesse40902]

it would be great if you can answer my question cause this question is more detailed. Thanks

[mats.hogberg]

The file size of the AVI is irrelevant to how much space it will occupy when reencoded to DVD specs.
What matters, is length in time. A rule of thumb is: "Use 3-4* AVI bitrate when encoding to mpg for DVD to make it full justice" which in your case would mean 2.1 - 2.8 GB for your AVI. So, max 2 of your AVIs would fit a single layer DVD.
At worst imaginable DVD video quality, you can squeeze 6-7 hours on to a single layer DVD. You do that by encoding to VCD specs video (and of course get VCD quality) and author as DVD.

/Mats

[jesse40902]

Hey you said a rule of thumb is to times things by 3 or 4? What do you times? im a bit lost...Thanks

[redwudz]

You can use a bitrate calculator to size it the way you want it: https://www.videohelp.com/tools?s=1#1

If you were to use a program like ConvertXToDVD or the freeware DivxToDVD at default settings, it would probably make the MPEG-2 file about 1500MB.

[mats.hogberg]

Hey you said a rule of thumb is to times things by 3 or 4? What do you times? im a bit lost...Thanks

If the DivX/XviD has a vide bitrate of 1000 kbps, you should use 3000 - 4000 kbps when encoding to DVD specs mpg.

/Mats

[drjtech]

The file size is 700 meg.

Resolution: 480x280

framerate : 25 frames per sec
date rate: 129kbs
video sample size: 24bit
compression: xvid

Are you certain your data rate is 129kbs? Or did you drop a digit when transcribing 'data' to 'date'?

129kbs is low quality even for an audio file, much less a video file. Is 129kbs maybe just the audio bit rate? 700MB at 129kbs is around 12 hours. How long is this video?

-drj

[Nelson37]

Think of your question this way.

How much frozen condensed orange juice does it take to fill a pitcher with water added? How much if it is powdered?

It depends on how much it is condensed, and how good you want it to taste. Many Xvid files have 10 times the bitrate, and presumably quality, of what you have sited.

There are too many variables to give an exact answer. As with the orange juice, try the rough rule of thumb and add more if not satisfactory.

Bitrate is what you are multiplying. As mentioned, that bitrate is unusually low. A hi-bitrate DVD conversion of a crappy looking video will still yield a crappy looking video.

Suggest you do some reading in the "what-is" and "guides" or "how-to" sections, this will save you some frustration and improve your output.

[jagabo]

The bitrate required varies depending on many factors including frame size, frame rate, the amount of noise and action, how bright the video is, etc.

Try Using an encoder that supports "constant quality" encoding. Pick the quality you want and the encoder will use exactly the right bitrate to deliver that quality.

The one drawback: with constant quality encoding you don't know how big the file will turn out.

[mats.hogberg]

Are you certain your data rate is 129kbs?

The educated guess is no since 700 MB at that bitrate would be someting > 10 hours, which seems unlikely...

/Mats

[stantheman1976]

I wouldn't doubt it if the bitrate is correct. This looks like it's probably a file downloaded off bottorrent or irc, where you can find movies that are 2 1/2-3 hours long squeezed down to a 700 meg file.

[jesse40902]

the movie is about 90 minutes long....

[mats.hogberg]

About right for a single layer DVD then.

/Mats

[jman98]

jesse40902 - to give you a less technical answer to your question, I don't have a bit rate calculator handy, but offhand I'd say you can fit 90 minutes of video on a DVD disc with a bit rate of about 5000 Kbps. Check with a bit rate calculator for the exact value.

Please note that length of recording time and quality are opposed to each other. You can get more of one by having less of the other. You want higher quality? Then you will have less recording time. You want more recording time? Then you will have lower quality.

[jesse40902]

yea but do u think i should fit 700 meg files into one disc?


instead of using 5000kbs, i can use 2500kbs...

the original video is about 1290 kbs

[jagabo]

yea but do u think i should fit 700 meg files into one disc?

Do a constant quality encode at the quality level you find acceptable and find out.

[mats.hogberg]

I'd settle for 1 movie / single layer DVD.
At that bitrate, the source picture quality should be good, so it'd be a shame to be cheap and go for 2 movies/DVD

/Mats