DivX / Xvid to DVD - Video Bitrate

[shiplu]

I want to convert DivX / Xvid to DVD, and i want to fit as many Video's as i can on one 4.7GB DVDR without loosing video quality.

for example a DivX video file has a video bitrate of 891Kbps then what should the DVD video bitrate be??

[BJ_M]

this will help you -- https://www.videohelp.com/calc

[andyp1]

If you don't want to lose quality , convert your audio to ac3 and don't put more than 2 hours on a DVD-R.

The bitrate you need can be determined by using a bitrate calculator.

[shiplu]

that doesn't help, it only works out the bitrate of a video.

i want to find out the DVD bitrate equivilant of a DivX or Xvid bitrate

[BJ_M]

it does help you -- since there is no dvd bit rate equal to a xvid/divx as you are asking .. to get the max amount of time on dvd , you have to know the lenth of the source files is all .

[Suntan]

Try not to think of it as just taking the data out of the mpeg4 and putting it into the mpeg2.

Think of it as taking the mpeg4 and blowing it up to a fully uncompressed stream then compressing it down to an mpeg2 stream. Treat it the same way a you would any poor quality source (poor quality compaired to a retail DVD copy -which is a poor quality source compaired to the original source-)

And please, stop asking questions like 'I want the smallest size without losing video quality what bitrate should I use?'

At the very least humor the guys on this forum that get inundated with these types of questions every day by phrashing it like 'Could you give me your personal opinion as to what bitrate you think is the best size for this and why you would pick that bitrate?' Most people don't mind answering these kinds of questions because at least the person asking is aknowledging that there are no hard and fast rules and that everyone has differences of opinons. It seems trivial, but it does make a difference, and you will find that you get much better answers.

-Suntan

[ZippyP.]

I recommend 352x480 resolution, AC3 224 kbps audio, 2300 kbps for video. Reasonable quality and you get 4 hours on a disk. For better quality try VBR 2300 average bitrate.

[reboot]

And for that downloaded crap that's almost not worth the effort, use all the same settings as ZippyP has suggested, but cut the bitrate down by 1/3 to get 6 hours on one disk. That will give you quality somewhere between SVCD and VCD, or slightly lower than VHS.

[vmesquita287]

Hi shiplu,

Try my tool DIKO. It does quality based encoding with prediction (when using CCE) so it will pick the optimal bitrate according to the content in a completelly automated way.
Generally you can fit up to 6 hours at 704x480 of widescreen progressive matherial with 192 kbps MP2 or AC3 audio.

[shiplu]

all i need is some sort of calculator that will tell me the best DVD video bitrate if i want to convert from Divx or XVid.

[shiplu]

thanks for that vmesquita287, i'll give it a try but i would still prefer some sort of calculator program if it exist.

[johns0]

There is no way to tell whats the smallest amount you can get with any calculated bit rate,you will have to do test encodes at selected bitrates of say 1500,2000,2500 etc and do 1 minute tests and see whats the lowest you like and stick with that,i myself encode dvd at 352x480 with cq at 80 on tmpgenc with 192 ac3,some widescreen movies at 90 minutes i can get to around 900 mb and divx sources even a bit lower but some full screen movies at 29.97 fps with no pulldown will encode to 2 gigs for a 90 minute run.