Kwag,

Could you give us any pointer or information about the new intra/non-intra block quantisation matrixes values you are using in the new template?

I would like to understand what will be the impact of these new values when encoding MPEG-2. What I am trying to do is to reduce a DVD MPEG-2 stream original bitrate (i.e. to a half or less) whilst maximising the quality and maintaining DVD specifications in order to burn it in a single side DVD+R (actually reducing its size to a half or a quarter). I think that minor changes in you fabulous KVCDx2 template will do. Any suggestion?

Thanks in advance,

Luis

Lucky i seen you pal

I have created a fully dvd compliant templet which allows for up to 4 movies per dvd-r in dvd quailty!

I am not telling a lie or anything I store my movies in this format accept I am using 3 cd-rs per movie until I get a dvd burner.

So if you want it mail me.

Muckians@gofree.indigo.ie

Baker

Hi Luis:
There's an article being written in Germany about the quantization that I used in the KVCD templates. I am waiting on the author's translation and approval to release that information.

Here's the problem for DVD's Luis:
To have a DVD compliant mpeg file, some things must be met.
First, the bit rate can't be below 2,000Kbps. As for MPEG-2 at 720x480 full D1, the MAX bit rate should be at least 5,000Kbps to have a good picture. Below that, you'll see blocks on medium to high speed scenes.

So if your average bit rate is between those two numbers, around 3,500Kbps, then the maximum size you can put on a 4.7 GB DVD-R would be ~165 minutes average. This is calculated with a bit rate viewer's calculator.

I have done tests, and all have failed, by using the GOP structure in the KVCD template and the Q matrix. The size is excelent, and plays fine in a PC, but when I burned to DVD-R, It didn't play in 5 tested standalone players. Only in one, my JVC, it started to play and 2 seconds later it locked up.

Now what you can do, is use half D1 resolution 352x480, and with a MIN of 2,000 and a MAX of 4,000 you'll have a very descent quality that's very close to DVD and should be pretty block free.

That should give you about 4 hour on a DVD-R.
This is exactly the method being used in the industry right now, like in the Panasonic DMR-E20 DVD-R/DVD-RAM recorder, to record in 4 hour mode.

If you want more than 4 hours, you'll have to go MPEG-1 352x240 DVD standard, and then you'll fit a much longer amount of video in a DVD-R, but at VCD quality.

There's no way around it. The DVD standards are very strict, and we don't get the flexibility of the stuff we do with (XYZ)VCD's

kwag

Kwag, many thanks for your instructive answer.

The alternatives you mention are ok for me, it is like having two modes: SP (up to 165 min/DVD) and LP (up to 4 hours) with a good quality (or LP and EP ). Now, the point is to guess what particular settings for TMPGenc will do the job: what CQ (or easier but time consuming 2pass-VBR), max, min , DC, standard GOP, closed GOP, quantisation matrix values, ...

Could you suggest a starting point from standard TMPGenc DVD template or KVCD template to begin working on it?

Thanks,

Luis

PS: By the way, Baker in this forum has sent me a template with this purpose. Not tested yet.

If I was going to put an mpeg in a DVD, I would start by modifying the standard DVD template included in TMPEG.

I'd change the resolution to 352x480 ( half D1 )
The MAX bit rate to 5,000Kbps.
DC Precision level to 9 or 10.
Audio at 192Khz.
Take the "Andreas" Q. Matrix, that's now the default in the KVCDx2 template, and put it there.
And the key would be to play with the CQ by lowering it to the minimum value where the low action and still scenes look good and stable.

PS. I haven't seen Baker's template

kwag