DVI to DVDr

[Vanderlow]

I've done a couple of AVIs to DVDr using TMPGEnc Xpress 3.0 (I have the AC3 plug in too) and they have turned out pretty good. I was wondering if I'm using all the best parameters to get the very best results. Here is the "typical" AVI in my library:


700MG size
movie is usually 1:15 long (give or take 10 mins)
encoded in Divx or xvid (probably divx)

512x382 resolution
around 140kbps data rate
29 frame rate (some 25s)

Audio is MP3 Mpeg layer 1
128kps

so far I've choosen one divx per DVDr and used 704x480 (NTSC) and Mpeg layer 1 for audio, VBR 2-pass and everything else set to default. Is this the best settings in TMPG Xpress3.0 for quality? For best quality one DVI to a DVDr? TIA

[guns1inger]

The resolution is so close to half-D1 that you could probably stick with that and get two movies on the one disk without sacrificing quality. And why use mpeg audio if you have the ac-3 plugin ?

[Vanderlow]

Why not AC3 well I wonder whether I should, that's why I'm asking.

"The resolution is so close to half-D1" You lost me on this. Could you say this more simply please? What's "half-D1"?


TIA

[yoda313]

Hello,

Read this:

https://www.videohelp.com/dvd



Kevin

---TDA can only edit stereo ac3 files. If you just put them in without editing it will accept 5.1---
[/img]

[Vanderlow]

My typical average bit rate in Tmpgenc Xpress 3 is 6400. When I change the resolution to 352x480 my avearage bit rate doesn't change, shouldn't it?

[yoda313]

Hello,

Resolution and bitrate are two different things. Resolution relates to screen size area. Bitrate is how dense the pixels are (may not be exactly right but it deeply effects the quality of it).

Yes changing the resolution WON'T change the bitrate. You drop the bitrate to fit more on to a disc.

Kevin

[monzie]

If it was me I would RESIZE the clip to 688 X 464 (why throw resolution away?).

Why not try encoding a minute or two at Half DVD (resize video to 320 X 432) at half your calculated bitrate so you can get 2 avi's per DVD.

and

A couple of minutes of Full DVD (720 X 480) at the size I gave you (688 X 464) and using an average of around 4000 you should still get 2 per disk (or go higher for 1 avi per disk)...also try using a CBR (single pass) you MAY NOT notice any difference....and it will be twice as quick......if you find it acceptable....(CCE does a fantastic single pass CBR..not sure about TMPGxpress).

Then take your pick....as there is no 'correct' method......some people 'see' things different (wether real or imagined). Self experimentation (ooooohhh) and what YOU find acceptable is the only real answer.

PS. Those sizes make the mpeg2 DAR (4:3) the same as the AVI's AR (or as near as dammit). Oh and dont worry about the 16 padding on my resize you will hardly see it (if at all) on TV playback.

[Vanderlow]

Just to clarify, does lowering your resolution to D1 mean your use less mpeg size?

[yoda313]

Hello,

NO. Lowering the bitrate decreases the file size along with the visual quality.

Kevin