What causes mosaic effect??

[RIDGEBACK]

I'm backing up another of my dvd's but i get a mosaic effect in certain parts of the movie.(little blocks corrupting the picture)

Anybody know what causes this.

[RIDGEBACK]

Nobody got any suggestions!!!

It seems nobody has any answers unless they can witter on about needing to know more about the exact specs of a posters system, then have a long thread debating the specs of said system, and not really answering the question.

[soundforbjt]

What causes it...if I'm right is the frames not being encoded completely (not enough passes, poor encoder, lack of CPU
power) So you see there can be many causes.

It depends on the method you are using to encode the movies. I use DVD2SVCD with CCE and 4 pass and never have the mosiac effect. Video encoding is very CPU dependent and the more powerful you have the better. I use an Athlon XP 1800+ and 512mb of ddr ram.

[RIDGEBACK]

It didn't need re-encoding its only 4.1GB with streams stripped with ifo edit(everything done correctly) its done it in different places on different discs(same movie) so I can only assume its the discs unless anybody knows otherwise.

[Taz69]

Have you tried playing your DVD before you burnt it to DVD-R?
I presume by your 3rd post that it is your backed up DVD-R which has the mosiac effect and I expect that it will play okay from your hard drive.

I think your first guess is right in that it is the discs that you are using.
For DVD films I have had excellent results using Traxdata DVD-Rs, even on tempramental DVD Players which struggle with other media. I would recommend only burning your movies at 1x speed even if you have 2x media.

This is assuming that you have a DVD-R/RW drive rather than a DVD+R/RW drive. Sometimes some specs do help as well as mentioning if it is before or after you have burned the film that you are having trouble...Good luck and get back if I assumed incorrectly

[ipdave]

I had this problem after trying to back up some of my kid's disney movies.

Since they did not fit on 1 DVD, I first ripped them off with SmartRipper. The VOBs played flawlessly.

Then I took out the menus, renamed all to *_01.VOB, ran IFOEdit, got VTS Sectors.

Finally, I used ReMPEG2 to compress down 69% to fit in 4.3gb. That *.m2v file has the artifacting in it. Then I got the VTS again after re-Muxing and burned it to 1 disc. With artifacting the size of dice.

If it was digital protection, you would think that the artifacting would be in the stripped VOBs before converting, but ... is that so?

[Taz69]

If your vobs after compressing them were okay then I expect it is the choice of the media which is the source of your problems.

If the artifacts are evident in the compressed version of your vobs before you burn them then your problem lies with using ReMPEG2 to compress your files (or at least the settings you are using).

If all you want is a basic rip with just the film you would be much better using CCE to encode your film and then use an authoring package to re-author the movie. My personal preferance is DVD Maestro because it has all the features you are likely to need but it is easy to get to grips with.

For ripping just the movie when it is too big to fit onto a DVD-R without re-encoding I'd suggest the following method.

1. Use the Movie Rip method within Smartripper and select stream processing because you'll need to rip the audio to a seperate file for later. The video and other streams can be left as 'Direct stream copy' but the audio stream will require the 'Demux to extra file' option.
It should be easy to spot which Program Chain contains the movie by looking at the lengh of the PC under angle 1 (You don't see that many multi angle films luckily).

2. Use VFAPIConv to create a psuedo avi file from the d2v file which Smartripper created for you when you ripped the movie. I suggest accepting the filename that VFAPIConv wants to use because changing the filename seems to screw things up. All you do is Add file, select the d2v file created by smartripper and click on convert.

3. Use CCE to re-encode the psuedo avi file, right clicking on the middle window, select your avi file.

A pretty good guide for CCE's settings can be found here
h**p://www.doom9.org/mpg/cce-advanced.htm
but you can skip the part on chapters and maybe even the part about a second pass (play the mpv file to see if the quality is good enough first) eventhough doing a second pass will allow you to fine tune the mpv (CCE's standard name for m2v file).

4. Use a DVD authoring package to re-author your movie from the mpv(m2v) file created in CCE and the ac3 file created from SmartRipper. As I said I prefer DVD Maestro but you might prefer a different package.

With Maestro you just import the mpv & ac3 files in, drag them accross to Movie1 and set first play to Movie1/Chapter1 and there you go a basic film ready to be re-authored and burned.
A more detail guide of Maestro is here
h**p://www.doom9.org/mpg/maestro.htm

I do suggest that you do at least 1 movie with just the audio and video streams before learning how to add the trimmings such as adding menus; chapter points and subtitles as this will make any mistakes you might make easier to figure out.

You might want to try checking out some of the tutorials on this site or have a look at Doom9.org as they spe******e in DVD authorings as well as creating VCD/SVCD & DivX movies.


I'm sorry if I have just flew through this, hopefully by using the software suggested you will see what I mean and be able to find the options you require in each application.

If you have any problems then don't hesitate to post. I'll try to give more details after I've got a little more sleep yawn...

PM me with any problems which can't be answered here due to new rulez