easy question.....

[drummerduck]

I want to burn a to dvd.....

With good quality video AND audio.....

The bitrate info is confusing me a bit..... and The CBR and VBR?

i have read ,printed off and studied the info on the site..... call me an idiot if you may....

i cannot quiet decide what to put me settings to..... to get a good all round dvd.... there MUST be an average?

Mustn't there?

many thanks....

D

[MickeyD]

I think I (possibly we) need more info. You want to burn a DVD, but what is your source? Is it AVI, MPEG-1, MPEG-2, etc.?

Also, CBR is decent for most stuff. If you're looking to burn a high action DVD then you may want VBR. I probably just opened myself up for ridicule...

[dcsos]

Mickey basicially you're right

If the material is to long to fit at a FAT BIT RATE of 8 MILLION BITS
this is when you use Variable Bit Rate..

That is, VARIABLE gives you no advantage except it allows more material per disc.

If you're authoring your own discs and don't go much over an HOUR CONSTANT BIT RATE IS THE WAY TO GO

[poopyhead]

Also, CBR is decent for most stuff. If you're looking to burn a high action DVD then you may want VBR. I probably just opened myself up for ridicule...

can't ever go wrong with VBR...might take longer, but the quality is almost always gonna be better....

CBR will give a completely black transition scene the exact same bitrate as a really high action sequence scene....intuitively, it sounds like a big waste and misallocation of bitrate

[dcsos]

Yes but since Variable Bit Takes longer than CBR

DON'T USE IT UNLESS YOU HAVE TO- IN ORDER FIT IT ON THE DISC

We are told not to use VARIABLE when CONSTANT will do not only cause of encoding time,
but more importantly, ENCODING MISTAKES by the encoder in the attempt to reduce the bitrate and fit more data

[poopyhead]

Yes but since Variable Bit Takes longer than CBR

DON'T USE IT UNLESS YOU HAVE TO- IN ORDER FIT IT ON THE DISC

We are told not to use VARIABLE when CONSTANT will do not only cause of encoding time,
but more importantly, ENCODING MISTAKES by the encoder in the attempt to reduce the bitrate and fit more data

yes...like i mentioned, it does take longer....but that's the price to pay for higher quality...

just because a DVD-R/+R has much more space than CD-Rs doesn't mean it's good to just use CBR because there's just so much more space....you can always improve quality with VBR, even if there's more space.....if there's 500 MB of extra space left, VBR will make a MUCH BETTER use out of it than CBR

encoding mistakes??? with DVDs...the max and min bitrate usually set anywhere between 8 mbit/s and 2 mbit/s, respectively.....so, i'm not exactly sure what mistakes you're talking about...but if an encoder mistakenly puts too low of a bitrate for a scene, the lowest it'll go would be 2 mbit/s.....

[dcsos]

But you're saying the opposite of me!

I was told by
SONIC SOLUTIONS TECH support to always use CONTANT BIT RATE

unless I couldn't fit the project on the DVD..

I was told this was to avoid the poorer quality of VBR encodeing..
Am I misguided by the DVD techs at sonic?

ONCE YOU KNOW YOU CAN"T FIT it at 8 MILLION BIT..
that's when higher quality comes from VBR

If you can encode at 8 million bits..don't do VBR
Sonic says to me if you use vbr you might have worse results...make sense?

[racer-x]

I agree with dcsos. I use CBR @ 8000 kbps on all my DVDs and the quality looks excellent. You can't tell it from the DV source. With PCM audio you get about 1 hour worth of video on DVDR. If you use ac3, you can get about 1 hr 20 min.