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-   -   Kvcd resolution bigger than source resolution? (http://www.digitalfaq.com/archives/encode/3613-kvcd-resolution-bigger.html)

Kane 05-14-2003 03:54 PM

Kvcd resolution bigger than source resolution?
 
does it make sense to encode a 480x576 file to a 528x576 kvcd, or does the quality decrease if the resolution is higher than the source resolution?

Dialhot 05-14-2003 04:28 PM

IMHO, it doesn't make any sense to do that : the more you manipulate your source, the more you decrease the quality.

Your video is already in a valid resolution (SVCD reso), so you can completly avoid the resize/crop operations. And you'll save time for encoding :-)

Kane 05-14-2003 04:33 PM

hmm, dont know, if my dvd player also accepts 480x576 mpeg1 (vbr)

Dialhot 05-15-2003 04:09 AM

I encode everything in MPEG2 (and burn as SVCD whatever the resolution) because my Pionneer DV454 doesn't play correctly MPEG1 VBR.

I trust Kwag when he says that the result in MPEG2 is awfull compared to MPEG1 (I don't really see a such difference myself), but it's better than nothing :-)

Kane 05-15-2003 05:53 AM

ill just try, till now my dvd player has accepted every kvcd , no matter which resolution

bman 05-15-2003 07:51 AM

U always can to encode to MPEG1 , mux and burn as SVCD .
U'll enjoy MPEG1 quality and SVCD Compatibilty to your dvd player :lol: :wink:
bman

Kane 05-15-2003 08:00 AM

Quote:

Originally Posted by bman
U always can to encode to MPEG1 , mux and burn as SVCD .
U'll enjoy MPEG1 quality and SVCD Compatibilty to your dvd player :lol: :wink:
bman

my cyberhome is kvcd compatible, so i dont need to use any tricks, i just never had made a kvcd with svcd resolution, but im sure, it will work

ovg64 05-15-2003 08:17 AM

Hi kane, thats not allways the case my Sony DVP-NS315 doesnt play svcds or mpeg 1 burn as svcds however, the next model up DVP-NS415 does. :wink:

Dialhot 05-15-2003 10:22 AM

Quote:

Originally Posted by bman
U always can to encode to MPEG1 , mux and burn as SVCD .
U'll enjoy MPEG1 quality and SVCD Compatibilty to your dvd player :lol: :wink:
bman

No, that trick doesn't works. The problems don't comes from the "1" or "2" after MPEG, but from the VBR mode : the player don't like it at all with MPEG1 video, and during travelling sequences, the image seems to freeze for a while and restart, making the movement far from smooth.

With MPEG1 CBR thats ok but... by by KVCD then :-)

kwag 05-15-2003 10:30 AM

Quote:

Originally Posted by Dialhot

With MPEG1 CBR thats ok but... by by KVCD then :-)

Not so fast :D
You can use the standard VCD templates (or any MPEG-1 encoder), but patch them with the KVCD "Notch" matrix. You'll see a HUGE difference in quality, specially on low lit/dark scenes. You'll still have a standard VCD compliant MPEG-1 capable of playing on every VCD player :wink:

-kwag

bman 05-15-2003 10:30 AM

Quote:

Originally Posted by Dialhot
Quote:

Originally Posted by bman
U always can to encode to MPEG1 , mux and burn as SVCD .
U'll enjoy MPEG1 quality and SVCD Compatibilty to your dvd player :lol: :wink:
bman

No, that trick doesn't works. The problems don't comes from the "1" or "2" after MPEG, but from the VBR mode : the player don't like it at all with MPEG1 video, and during travelling sequences, the image seems to freeze for a while and restart, making the movement far from smooth.

With MPEG1 CBR thats ok but... by by KVCD then :-)

Are u sure that original VCD res 352x288(240) too needs CBR ?
If so than u are right , U can say good bye to KVCD or just purchase another player :wink: :wink:
bman

Dialhot 05-15-2003 10:46 AM

Quote:

Originally Posted by kwag
Quote:

Originally Posted by Dialhot

With MPEG1 CBR thats ok but... by by KVCD then :-)

Not so fast :D
You can use the standard VCD templates (or any MPEG-1 encoder), but patch them with the KVCD "Notch" matrix. You'll see a HUGE difference in quality, specially on low lit/dark scenes. You'll still have a standard VCD compliant MPEG-1 capable of playing on every VCD player :wink:

-kwag

You're Right :-)

I should have said "Bye bye 2 hour KVCDx3 on a 90 min CD like I did last sunday". :lol:

Dialhot 05-15-2003 10:57 AM

Quote:

Originally Posted by bman
Are u sure that original VCD res 352x288(240) too needs CBR ?

The problem wasn't so present in VCD res than SVCD (or KVCDx3) res. But I really didn't want to use such res as I found the result too blurry for my eyes.
(I use this only when I want to burn TV shows up to 6 ep. per CD but not for movies)

Quote:

If so than u are right , U can say good by to KVCD or just purchase another player :wink: :wink:
bman
You misread me : I use KVCD either, but encoded in MPEG2 insteed.

Note: I already have an other player (Thomson 4500) in my room that reads MPEG1 KVCD. It's too long to tell you why I don't just swich the to players :-)

Clockwork 05-15-2003 06:24 PM

Quote:

Originally Posted by ovg64
Hi kane, thats not allways the case my Sony DVP-NS315 doesnt play svcds or mpeg 1 burn as svcds however, the next model up DVP-NS415 does. :wink:

The "header trick" works on the SONY DVP-NS315.

Tested. It works.


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