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-   -   KVCD has Green Flashing Screen? (http://www.digitalfaq.com/archives/encode/2377-kvcd-green-flashing.html)

VaioVcd 01-27-2003 04:26 PM

KVCD has Green Flashing Screen?
 
It seems tha many of us are having problems with this
Green flashing screen on some of ur players Including My Self.
I recently bought a JVC XV s300bk for 110$. To my disapointment I
foudout It didnt play some of the Kwag Templetes.

I look out for solution but i didn't hade any luck, Now Its up to me to find out If the Problem could be solve or We all have to but New DVD players.

I Just Starded a Testing Project. I'm going to do a lot of testing and on each single test I'm Keeping a DataShit that containt the Options and Process used to make the Test.(Word Pad). But of course this is going to
take some time until I get the Conclusion.

Please use this Thred to Post Anything You Want About this Problem,
I Beleive We Can Get Togather And Find Solution For eachone of our Cases. :)

Jellygoose 01-27-2003 05:23 PM

Most Likely A Green Flashing screen is an indicator for a resolution that is not supported by the player... have you tried all different resolutions, with the other settings alike?

MrTibs 01-27-2003 10:56 PM

non-supported players
 
You are correct that the green flashing is an indication that the dvd player doesn't like the format but there are some other things to consider:

1. According to the spec for MPEG2 (as I undersand it), every MPEG2 decoder should be able do decode MPEG1 files.

2. DVD players can use all kinds of conditions to determine if the CD in the tray is MPEG2 or MPEG1 or weather it can play it or not. (as proven by all the "tricks" for unsupported formats)

3. Who would have guessed that ANYONE could get the compression results that Kwag's templates have achieved? Even after all this time, he continues to make headway and push the limits of his own templates! (180 minutes of VCD quality on one CD? 360 minutes on on CD!)

4. My Toshiba DVD player doesn't officially support anything other than DVD yet it plays VCD's at 352x240 very well.

So lets give it a try! I'm game! Post your suggestions, I'll try every one of them and post the results.

VaioVcd 01-29-2003 11:20 AM

Thats right is the resolution. My DVD only Plays 352x240,
But we all want better quality right, so we need higher resolutions.

PLEAS TRY THIS AND TELL ME IF IT WORKS
I think i have the Solution, IF you want to encode with a template that has a higher resolution then 352x240 you have to ReMux the Video and audio

mpeg 1
For example: You want to encode a 80 minute Movie with the 704x480 nEARDVD quality template, You would do this as usual with TMPEGce.
I preffer to Encode my video with TMPEGce and Audio with HeadAC3he,
And then Mux them togather with bbMPEG(see KVCDx2 Guide),

You Video and Audio may be encoded togather with TMPEG or Mux togahter with bbMPEG, In any case the next step is what for some reason
fixes the problem....,

Next go to MPEG tools, De-Multiplex, Open you MUX movie Etc,
Save the Audio Streem and Video Streem in the same folder.
Now Go to Multiplex Load the Audio and Video streems You just created
And make sure you select MPEG2 SUPER VCD (VBR) the last one.
Select the folder to be Saved. Now hit Run.

NOTE: The REMUX file may play as an Audio File Only on WMP an ROP
Thats All right It will work on the DVD>

Now Burned with Nero As SVCD Non-Standard,

IF i miss any information Please REPLAY, sorry for mispelling




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VaioVcd 01-29-2003 11:26 AM

Ignore "mpeg1" :oops:
I ment that you dont have to change the MPEG1 to MPEG2

MrTibs 01-29-2003 11:34 AM

Progress....and failures.
 
I tried the SVCD "header trick" to get my non-svcd player [Toshiba SD2800] to play SVCD's but it was a no-go.

My player was able to play NTSC and PAL at 352x288. That isn't 352x480 but it is a 20% increase in vertical resolution. (I think... assuming that the player isn't throwing away the extra lines.)

I'll try the re-mux trick [posted above] tonight.

MrTibs 01-29-2003 11:37 AM

@VaioVcd

To be clear, you are saying to encode to Mpeg1, re-mux as Mpeg2 and then burn as SVCD.

In the end I have an SVCD disk, muxed as SVCD but with the video in Mpeg1 format?

VaioVcd 01-29-2003 04:21 PM

Quote:

To be clear, you are saying to encode to Mpeg1, re-mux as Mpeg2 and then burn as SVCD.
Thats Right

Quote:

In the end I have an SVCD disk, muxed as SVCD but with the video in Mpeg1 format?
If you mean Remux as SVCD your right

NOTE: I'm not sure if this is going to work for you since your player doesn't support SVCD, My players support SVCD Thats Way. Give it A try anyways you never KNOW!!

MrTibs 01-29-2003 09:22 PM

Well, I tried the de-mux, re-mux method and I'm sorry to say that is didn't work on either player. (I burned both SVCD and VCD versions with the same fake SVCD file.)

Thanks for the suggestion though. It was worth a try.

I'm open to anyone else's suggestions.

VaioVcd 01-30-2003 04:21 PM

What kind of Players do you have?

If you have one that Plays SVCD then You can just use the SKVCD templete.

I wonder why it didnt work though!! Did you Uncheck the CREATE STANDARD box on NERO,

Was the Remux file PLAYBLE(vido and audio or just Audio) on Window Media Player.

MrTibs 01-30-2003 10:20 PM

I have two players: a Toshiba SD2800 and a Technosonic 202.

My Technosonic plays SVCD's but only at 480x480. I believe your "fake" SVCD did play at 352x480 but with flashing green screens (the B frame problem again). I did further testing with MPEG1 files and found that it would play them (with I,P,B frames) at 352x240,288,320,336,360.

My Toshiba would only play MPEG1 files at 352x240 and 352x288. In the case of the Toshiba, most of the time it would not display the video but the audio would play fine. At 544x480 I got green blocks.

The reason for my persistance with the Toshiba is because its display is MUCH better than the Technosonic. The Toshiba is hooked up to my new new Sony television while the Technosonic is in the basement hooked to my 10 year old 20".

VaioVcd 01-31-2003 10:59 AM

Well lucky for my i have JVC, I guess if you want to play all the templetes your going to need to but another DVD player.

Or unless you like the MPEG1 files at 352x240 and 352x288, then thats the way to Go.

I curently tring to encode We Were Soldiers 120m + on 1CD
And i'm having a lot of trouble finding the correct templete, filters, aspect ration, scripit, etc. The source aspect ratio is WideScreen 16:9. I jsut want te strech it a little verticaly so it wont be so wide.

I going to put my tests on a CRW, and i'm going to make a perfect movie no matter how long it takes me.

MrTibs 01-31-2003 04:57 PM

What model of JVC player do you have?

Does it support Mpeg1 at 352x480?

VaioVcd 02-03-2003 01:33 PM

Sorry for the long time to reply, I didn't had internet access

My DVD is a JVC XV s300bk

It does support 352x480 with the remux strategy

HansLuyten 02-28-2003 08:48 AM

Green :)
 
OK, I tried a KVCD and yes, my DVD player (Mustek 520, one with firmware 2.0 and one with firmware with 2.02 - WinBond chipset - should be similar to the Technosonic) shows a green jerky screen.

Now the funny part: when I increase playback speed (for example fast forward, 2x normal playback speed) the video looks great ... a little bit to fast, and a 1 hour can be seen within 30 minutes,...

Anyone have a clue what this can be? i-frame issue?

kwag 02-28-2003 11:10 AM

Hi HansLuyten,

Try another resolution. If you're using 528x, change it to 544x
If that doesn't do it, try the same set of resolutions again, but in MPEG-2 instead of MPEG-1.

-kwag

HansLuyten 02-28-2003 11:21 AM

I did make a lot of test movies and noticed the issue only with MPEG1 files ... but I'll keep doing some experimentation, as I for now only tested NTSC. Will try PAL in a few minutes ;)

HansLuyten 02-28-2003 04:22 PM

I noticed the "green" effect to only occure with MPEG1 based templates. I tried it (for now) only with NTSC movies. MPEG2 templates seem to work just fine :)

MrTibs 03-02-2003 02:58 AM

The green screen issue on the Mustek is related to the B frames. If you eliminate the B frames from your GOP, you will get perfect playback. A simple test is to single frame advance the MPEG1 stream and count out the pattern between green frames. Compare that pattern to the GOP in the template and you will see the relationship.

Higher in this thread I posted a list of resolutions what worked on my Technosonic with the standard KVCD GOP. If you get anything else to work, please post the results. I would love to try it.

hedix 03-02-2003 07:22 PM

Quote:

Originally Posted by MrTibs
The green screen issue on the Mustek is related to the B frames. If you eliminate the B frames from your GOP, you will get perfect playback. A simple test is to single frame advance the MPEG1 stream and count out the pattern between green frames. Compare that pattern to the GOP in the template and you will see the relationship.

Great !. But, what will be lost if I modify the GOP ? Compression ?

Thank you in advance.


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