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-   -   KVCD: Way to hack my LG DVD Player? (http://www.digitalfaq.com/archives/players/1934-kvcd-hack-lg.html)

GetUp 12-26-2002 01:38 PM

Way to hack my LG DVD Player?
 
I'll try to encode example VCD with many different KVCD templates. But only KVCD-LBR-11-12-2002-352x288-_PAL_-PLUS seem to be working. Any other VIDEOCD plays on my LG DA-5620 jerky, slow and...strange thing - always display incorrect time-size :) It looks like DVD Player try to keep maximum bitrate line in original VCD (i don't remember precisely, something like 115 kbps?) Is there any ways to force my dvd player plays KVCD discs with bitrate higher than what used in LBR KVCD profile?
P.S. Sorry for my bad english :)

kwag 12-26-2002 02:54 PM

Hi GetUp,

Just change the MAX bit rate on the LBR template to around 1,800Kbps. :wink:

-kwag

GetUp 12-26-2002 03:15 PM

But is this way to use KVCD-CQ-352x576-_PAL_-PLUS.mcf? :) Lemme guess...change the MAX bit rate on this template to around 1,800Kbps? :)

kwag 12-26-2002 03:23 PM

Quote:

Originally Posted by GetUp
But is this way to use KVCD-CQ-352x576-_PAL_-PLUS.mcf? :) Lemme guess...change the MAX bit rate on this template to around 1,800Kbps? :)

I see what you mean now. If you encode at 352x576 your video does play but jerky :?:

If this is the case, the problem could be MIN bitrate. Change the MIN bit rate to 650Kbps and try it and see if the jerkyness stops.
I assume the only problem is the jerkyness, and the video does look alright :?:

-kwag

GetUp 12-26-2002 04:00 PM

Ok, I'm just finished several test encodings. Last profile i used was KVCD-CQ-352x288-_PAL_-PLUS.mcf with 1800 MAX br and 650 MIN br, VBV size - 112 KB. Jerkyness stil exist. Not often, but... What way i must go? :) Increase MIN Br? Or VBV? Or.....
For multiplexing i use bbMPG, and there, in PROGRAM STREAM SETTINGS is options like - Buffer Size (Kb) defaulted by 46 kb for VIDEO and 4 kb for AUDIO, is this _same_ like VBV in TMPGenc, or i must just forget it? :)

kwag 12-26-2002 04:02 PM

Quote:

Originally Posted by GetUp
Ok, I'm just finished several test encodings. Last profile i used was KVCD-CQ-352x288-_PAL_-PLUS.mcf with 1800 MAX br and 650 MIN br, VBV size - 112 KB. Jerkyness stil exist. Not often, but... What way i must go? :) Increase MIN Br? Or VBV? Or.....
For multiplexing i use bbMPG, and there, in PROGRAM STREAM SETTINGS is options like - Buffer Size (Kb) defaulted by 46 kb for VIDEO and 4 kb for AUDIO, is this _same_ like VBV in TMPGenc, or i must just forget it? :)

Leave VBV buffer set to default VCD size. Don't use 112. Use this screenshot to multiplex:

http://www.digitalfaq.com/archives/i.../2002/12/5.jpg

-kwag

GetUp 12-26-2002 04:33 PM

Ok, now i use ALL your recomendations _exactly_ :)

Leaved VBV buffer set to default VCD size.

Put MAX br to 1800, MIN br to 650, Enable Padding, Quality to 35


Used for muxing your screenshot (like i do before).

Yes, jerkyness in some places gone. But...in hi-actions scene - NOT :(

What's next? :(

Oh, KVCD-CQ-352x288-_PAL_-PLUS.mcf template...[/IMG]

kwag 12-26-2002 04:40 PM

Quote:

Originally Posted by GetUp

Yes, jerkyness in some places gone. But...in hi-actions scene - NOT :(

What's next? :(

Oh, KVCD-CQ-352x288-_PAL_-PLUS.mcf template...[/IMG]

AHA!, so maybe the problem is with the MAX bit rate :idea:
Lower your MIN back to 300 and lower the MAX to 1,150.
Leave everything else as it is.
One more try :D

-kwag

GetUp 12-26-2002 04:53 PM

Hehe, you want to name me GuyWhoEncodeBadQualityVCD? :) Ok, I'm just finished another encoding with all previous settings, except VBV! I put size to 22 Kb, and test encoding looks fine on my standalone. Ok, now I go to another profile.... =)

kwag 12-26-2002 05:07 PM

Quote:

Originally Posted by GetUp
Hehe, you want to name me GuyWhoEncodeBadQualityVCD? :)

Of course not :lol:
Quote:

Ok, I'm just finished another encoding with all previous settings, except VBV! I put size to 22 Kb, and test encoding looks fine on my standalone. Ok, now I go to another profile.... =)
So jerkyness is gone at 352x288 :?: If so, your player doesn't like high bit rates. 1,150Kbps is a good MAX for 352x288, but it won't be good enough for your >= 352x576 encodes :roll:

-kwag

GetUp 12-26-2002 05:15 PM

Yes, jerkyness has gone with 352x288 and MAX bitrate 1800, MIN bitrate 650 and VBV 22. Does 1800 kbps is _good_ MAX for 352x576?

kwag 12-26-2002 05:20 PM

Quote:

Originally Posted by GetUp
Does 1800 kbps is _good_ MAX for 352x576?

Yes it is. I use 2,300 for 352x480(576) and above that I use 2,500, but you'll have very descent quality with MAX=1,800 at 352x576 :wink:

-kwag

GetUp 12-26-2002 05:26 PM

Ok, so there is offtopic question :) I want to convert some my XviD avi's to VCD using your great templates - so, i load AVI's to TMPGenc, do some modifications and press start. But, there is a question - is some postprocessing (i use FFDSHOW) filters enabled in process of conversion? If not - how to do this? Does internal resizer in TMPGenc much slower than AviSynth offer?

kwag 12-26-2002 05:57 PM

Quote:

Originally Posted by GetUp
Ok, so there is offtopic question :) I want to convert some my XviD avi's to VCD using your great templates - so, i load AVI's to TMPGenc, do some modifications and press start. But, there is a question - is some postprocessing (i use FFDSHOW) filters enabled in process of conversion? If not - how to do this? Does internal resizer in TMPGenc much slower than AviSynth offer?

You use FitCD to open your XviD files and create a .avs script. This way you process your XviD through AviSynth with correct resize ( provided by FitCD ) and all the wonderful AviSynth filters available. Read about FitCD and blockbuster filters, etc. in the forum areas.

You process your audio by extracting it with VirtualDub, and then encoding it with HeadAC3HE. Read about that too in the proper sections.

-kwag


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