Why do you get motion noise when you rip a DVD to an SVCD?

[spankey]

I notice that when I make SVCD's I still get some motion noise or pixelating. Not as bad as a VCD though... The noise is mostly during HIGH action sequences.. Other than them it looks GREAT?


Why do you get this and is there a way to get around this.I use TMPGEnc to convert from VOB to SVCD MPEG-2.....

I choose NO motion settings just convert at normal? Would uping this to hig h or highest stop some of it????

Thanks for your time and help....

[wulf109]

the bit rate your encoding at is too low. Pixelization,macroblocking is a sign of low bitrate. What bitrate are you encoding at and perhaps more important frame size are you encoding at?

[spankey]

Wulf-

Thanks for your reply. The birate varies from movie to movie? I try to fit 99% on the disk when I am encoding thru the Birate settings.. When I do the source range I try to split the movie in two so I can fit it on TWO disks. SHould I be using THREE????If I increase the birate would I have to thus use more disks????

WHen I load a AVI(VOB) file to encode to SVCD(MPEG-2) It setts the ratio to 4:3 525 NTSC(704x480). I then in the OTHER settings choose Full screen keep aspect ratio... Mind you these are DVD rips.

Should all the screen sizes be the same? Or match?

I use the project wizard to set all this up? I also use the SVCD guide on this site as a guide as well to help me along.....

Thanks again for your time....

Spankey

Hope you can help me out...

[wulf109]

I'm guessing it's a two hour movie. Two disks would result in a bitrate down around 1600. 1600 is quite low. If you want to keep it on two disks I would suggest you restrict the frame size to 480 x 480 and use 2 pass VBR to encode. Set the average bitrate at 1600,the max at 3200 and the min. at 300. VBR is slow,figure about 50 % more encoding time.

[adam]

Well a higher than standard max will certainly help prevent artifacts in high motion scenes but you run the risk of the XSVCD not playing on your dvd player, or any future player you buy. You should be able to eliminate pretty much all artifacts during fast movement even with a max of 2500kbits but you will have to use a higher avg bitrate. In many cases, with such a low avg the encoder is not able to free up enough bitrate in low motion scenes to even apply the full 2500kbits so upping the max bitrate might not even accomplish much.

If your movie is over 2 hrs long than you should definitely consider using 3 cdrs. Like Wulf109 said an avg of 1600 is very low.

[spankey]

Wulf

I tried to max out my max birate to 3200 as you specified, but it would only let me set it at 2500????? Am I missing something?

I then re-encoded it and only tweeked the motion search setting to HIGH QUALITY, it earlier was set to FAST... SO I slowed it down and sure enough it helped 100%..

One thing that is very strange? I only seem to get alot of motion at the BEGINING of a movie? The movie was Toy Story2 I just borwed it from a friend and I ripped it for my son's... All the motion noise was at the first 4 minutes of the disk and only at fast sequences at that? The movie was a total of 90 minutes so I spit it at 45 minutes to two 80 min disks... All went great... I can handle what I see. Other people can't see what I see. Due to that I know what I am seeing and they are NOT...LOL....

I had company last night and put the dvd in and then the SVCD and they claimed that the SVCD looked just as good. So if they are fooled, I will hold at these settings......

Thanks for your help...

Spankey

[wulf109]

In your original post you said you were opening the VOB in Tmpeg.
Are you using Tmpeg to open the VOB directly,without frameserving thru DVD2AVI?
Glad to hear it worked for you.

[spankey]

Wulf-

I do framserve thru DVD2 AVI. I am actually haiving trouble right now with the movie behind enemy lines... I rip the Vob, but then use DVD2AVI and it takes about 10 minutes... But there is NO wav file... I can load the vob file for TMPGEnc but when I go to load the audio there is NOTHING there? The audio is in DTS... Is there ways around this?????

Thanks
Spank....

[DBZNJapan]

It's the exact opposite for me, I get more noise during slow scenes than action scenes but it isn't that bad at all really. Ripping it then encoding it to VCD probably looks better than using my DVC and I spent $200 on that thing. DO NOT GET DAZZLE DVC you'll get ripped off like I did. I hear Pinnacle is the best.

[wulf109]

spankey:

I would think the reason Tmpeg won't open ac3 file is because you have another program installed that is "hogging" the ac3 extension. It's a problem in the Windows Registry. What version of windows are you running.
Not getting audio from DVD2 AVI. are your settins

track: 1
channel format :dolby digital
dolby digital: decode
48>44.1: off
nomalization: 100%

I'm not frame serving,I open the vob directly in Tmpeg and ecode. I think the results are much better.