DivX 2 DVD Bit Rate

[Booooom]

Hiya pps
Say i have a 700MB DivX movie (5.1.1 codec) with a video bit rate of 796 kbps (0.58% overhead). If I want to burn it on a DVD, how high should the bit rate be, to get a very good result, one that above it i would barely (if at all) notice a any difference ? I can go all the way to 9000kbps but that, I would think,would a bit over the top.
Is there a table specifying that if you have a DivX file that big and with that bit rate, this would be the "max" bit rate you should use.
Thanks.

[Cobra]

It depends on how long the film is - DVD is completely different to DivX and so you'll probably need 4000+ to make it look really decent.

How long is the movie?

Cobra

[Booooom]

The movie is about hour and a half. I agree that 4000+ kbps sounds ok, it is a actually what i used. I agree that the length of the movie is important, sorry for not mentioning it.
Is there a general rule of thumb i can use to calculate the "optimal" kbps (and i know that optimal is such a bad word for these kind of things) I should use?

[teegee420]

No rule of thumb, just use a bitrate calculator such as the DVDRhelp Bitrate Calculator. For best quality, don't put more than 90 minutes on one DVDR, at least for 720x480.

[dafreak]

booom, do you play daoc by any chance?

[Booooom]

Thanks...
Ususally DVDRIP movies come in 1 or 2 DivX/Xvid files for a movie length of around 2 hours. My question is really, what is the compression ratio in both case (when i'll DVDRIP with DivX and make 1 or 2 files per 2 hour movie and the same for Xvid)

teegee420: Thanks for the Calculator albeit not really answering my question as it just shows the maximum bit rate i can use given other parameters, but sure will help me

dafreak: No i do not play that and it's Booooom not Booom and i say that cause I do play other games using that name and ppl ofter confuse me with other Boooms (too much O's i think hehe)

[teegee420]

Thanks...
Ususally DVDRIP movies come in 1 or 2 DivX/Xvid files for a movie length of around 2 hours. My question is really, what is the compression ratio in both case (when i'll DVDRIP with DivX and make 1 or 2 files per 2 hour movie and the same for Xvid)

Ok, now are you talking about ripping a DVD to Divx/Xvid now? I thought your question was about making a DVD from Divx.

teegee420: Thanks for the Calculator albeit not really answering my question as it just shows the maximum bit rate i can use given other parameters, but sure will help me

Your question doesn't have an answer. There is absolutely NO relation between Divx and DVD bitrates

[Booooom]

Thanks teegee420 for answering
I am sorry for not being clear. The question arose when a friend of mine handed me 2 DivX files which ripped from one of his DVDs (handed meaning sending the files using Mirc lol)
I wanted to watch them on my DVD player thus i needed to author them.
So i want to know what will be a good bitrate when i reconvet those files to Vob files. Nero lets you go all the way to 9000 kbps but that sounds an overkill, being MPEG4 a lossy compression.
Thanks

[teegee420]

In the first place, I wouln't use Nero. It's mpeg-2 decoder is terrible. You're better off with TMPGEnc or Mainconcept MPEG Encoder. Using a dedicated encoder requires more work on your part, but it's woth it if quality is at all important to you.

If you insist on using Nero, use the maximum bitrate that your movie will allow. Again, I refer you to the bitrate calculator. Use the maximum bitrate the running time of the two files will allow. For best quality, don't put more than 90-120 minutes on one DVD.

[Booooom]

Hiya,
I am not really using nero (well i do sometimes)...
I found out an answer on another forum:
http://forums.divx.com/viewtopic.php?topic=58577&forum=6

that ratio is actually what i used, I don't know why.

the relevant response:
"Don't encode in full resolution
Simply because of the black bars and the anamorphic aspect (which is not supported as said by the former poster)

It doesn't matter which reduction ratio there is, 'cause (as said) it depends from movie to movie.

But you can consider DivX Pro as 4 times as effective as MPEG-2.
Which means, IN THEORY, a 720x576 DVD video encoded at 4000kbps VBR is roughly equivalent to DivX Pro @ 1000kbps using the exactly same resolution."

[teegee420]

IN THEORY, a 720x576 DVD video encoded at 4000kbps VBR is roughly equivalent to DivX Pro @ 1000kbps using the exactly same resolution."

Maybe I'm more critical than most, but I don't agree with that at all. I have found that the minimum bitrate for full D1 is between 1500-2000kbps.

The best thing for you to do is run a bunch of test encodes and decide for yourself, rather than rely on what others think and what a magical ratio dictates. Get to ripping!

[Booooom]

teegee420, you are right of course, ripping it is.
Cool pic dude, that scene was the best scene in kill bill 1 (which is a great movie)
Thanks.
Bye