150 minutes of HQ-SVCD on a 80minCDR???

[fgtan]

Hello my friends,
I found this post in kwags forum, but I have no idea of how it works.
It actually says that its possible to make a hq 150 min svcd that fits a 80 min cdr.
This is what it says.

xxxxxxxxxxxxxxxxxxxxxxxxxxxx
When trying to get further optimization (increase video quality, reduce
filesize) I´ve tried to encode the movie in interlaced mode (cause the
TV set displays in interlace mode anyway).

So instead of 25 fps non-interlace (progressive) I selected 50 fps
interlaced. This needs to select MP@HL in MPEG2 mode.

Test encodings of 1min samples issued filesize of about 60% for interlaced
compared to non-interlaced (100%). At 448x448 active SVCD
windowsize (in 480x576) I´ve got ~ 5MB/min @ cq 75 in TMPGenc
bringing a total playing time of about 150min at fullSVCD resolution.

The trick is using field based encoding instead of framebased encoding. My S/A player Panasonic RV32 plays this flawlessly (so far).

I still get some block artefacts in scene changes so I´ll try further optimizations (field order, etc)

Maybe someone will check this too and let us know the results of
his S/A player (some players are known to run into trouble @ field based
encodings)

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Does anyone knows what he meant??
If so, how to do this???From wich template did he started?
I´ve posted this over there also, if I have some news, I let u guys know.

THANXS

[fossil]

well that's crap. i dotn' believe you can fit more tahn 80minutes of decent quality movie on to a 80minute CD-R. I usualy make my movies into 2 CDs, and the quality is real good

[Pussylips]

Hi there,
Was looking at your post as I was looking for something else. Over ayear ago I stubbled over the same type on thing. I got a full film ( Blade 2 ) on a cd, was very good quality. "352 x 576" It was 970Mb in size. But that was a while ago and can't remember how I did it. But I did use some of the settings that you used. But I did use Avisynth. Have lost all records of it because of PC formats and other stuff. But what I will say is that you need to change your GOP settings and Quantize Matrices to get more compression. Hope it all goes well!
Pussy!-

[mats.hogberg]

your GOP settings and Quantize Matrices to get more compression

That might give you a watchable "XSVCD" but definately not a HQ SVCD if I translate HQ to High Quality. But then again, quality is in the eyes of the beholder...

/Mats

[Pussylips]

Point was that you could not fit more that 80mins on CD you can! If you want better quality you put it on DVD!

[mats.hogberg]

Actually, the point was how to put 150 min high quality SVCD on a CD. Counter point was: You can't.

/Mats

[mikesbytes]

It is true that you can get quite a lot on a 80min CD. Kwangs SVCD template for TMPG does a supprising good job.

Amongst the refinements he made was the modified glop structure into a very long string IBBPBBP........BBPI.. and on a TV it is better to sacrifice Horizontal resolution rather then vertical resolution, ie 720*256 is inferior to 352*512.

I created some home video using the Kwangs SVCD template (I was lazy and didn't separte the audio) and tested it on 4 DVD players and it worked perfectly despite being non standard

[thegig]

Just my two cents. Kwag has done alot of good work with XSVCD and XVCD templates. But just keep in mind these are X-type formats meaning they are NON_COMPLIANT. I use an offshoot of his templates for TV episodes and the quality is very good. I stopped using alot of his templates as DVD prices have fallen, but the best way to judge his work is to try it, all you'll lose is a couple of CDs, and some time. But then you can chalk it up to learning 8) .

[Viper10000]

Hi,

Like mikesbytes and thegig, I have used Kwag's KVCD templates for VCD and SVCD, and I found they're pretty good. I don't know about the 150 min of HQ SVCD in a 80-min CD though. I did stuff 2 Hr+ movie in 1 80-min CD, but I usually used the VCD templates.

Sometimes I used Kwag's Half-D1 templates (352x480) to create my videos and author it on DVDs. The last of such project was the movie "Lagaan", which is a 3hr 40min epic. Kwag's Half-D1 template produce a very good outcome, and it fit well in a 4.7 GB DVD. I tested in 7 different DVD players, and all play it fine.

Cheers,

[spiderman2k1]

In TMPG there is CQ setting's you can get alot of space on the disc but it's blocky.

[mikesbytes]

The advantage in using Kwang's templates is that he has done the gruntwork in finding TPMG settings that maximise the quality that can be produced for a format for a given file size. They are a good reference point for anyone who wants to push the 'envelope' while retaining compatibility with most DVD players.

With a good quality input 120 minutes of good quality xSVCD is easily acheivable on a 80min disk. 150 is pushing the envelope, but it can be done.

[2man]

well to put 150 min in a 80min cdr in HQ-(X)SVCD only if the movies hasn´t any action or shrinking the image (big borders top/bottom)
kwag templates + Avisynth (script by Jorel) are excellent i used to do 120 min on a cdr 90min w/quality but as (x)vcd (100% quality)
certainly the HQ in the sentence is to show that w/kwag settings quality is better
and they are