REMPEG BLOCKY PICTURE

REMPEG WORKS GREAT ON MOST FILMS BUT ON HARRY POTTER AND SUM OTHER FILMS MOSTLY NEW FILMS I AM GETTING A VERY BLOCKY PICTURE
ANYONE GOT ANY ANSWERS

 

I have the same problem on some movies that i re-encode (ie ephisode1, eyes wide shut, almost famous)

I'm not sure if this is a problem with rempeg or some movie have a way of causing this blocky-ness.

 

I too have the same problem and keep searching the forum for an answer but no one answers someone please help all of us ( including the silent ones )!!!!!

 

it semms there are a few of us having this problem with rempeg2 i have found that all new warner brother titals have this blocky effect,
tmpeg works fine but the quality is not as good
does anyone know of a way around this using rempeg2 i have tried all sorts of settings but still get blocky picture

 

anybody know another program to re-encode (or modify) the bit rate of mpeg2 streams?

 

There are two different reasons for the blocky picture you are getting. The first, ReMPG is a premitive encoder. It can not give good quality picture with bit rates over 3.5MB/S only. Try using TeMPG or better yet CCE. Since you are trying to encode Harry Potter, which is almost three hours, the bit rate you chose is probably around 2.5. Try to split it into two DVDs.

The second reason for the bad picture is that Warner Bros pictures logo is encoded interlaced and the rest of the movie is progressive. For some reason this switch screws up the whole process of encoding. I faced this problem with TeMPG but not ReMPG. To avoid it, use IfoEdit to strip the VOB containg the logo and then encode the rest of the movie.

 

yes i too have read it is the warner bro logo causing the problem but most of the time the logo is part of the VOB with the opening credits so it is not so easy to remove that part (cell) I have posted another thread on removal of cells after stripping but no answer yet on this ( you can use smartripper to remove cells but i prefer dvddecrptor any ideas????

 

I too have had some mixed results with Rempeg. For instance, when trying to encode a particular movie, the first minute is fine, then for the next several minutes, the picture is very distorted, with strange multi-colored artifacts and distortion. Then, the rest of the movie is fine.

So, I decided to first check the .m2v original file, and eliminated that as the culprit. It plays fine. Then, I decided to rip only the first chapter of this disc so I could have a very small file to test. I re-encoded the newly created small file, and got the same results again.

So, I downloaded TMPGEnc, and encoded the same file. I am sad to say, I got the same results using a different encoder. It must have something to do with the source file.

 

Update...I decided to only encode the second cell of the chapter I extracted, and it encoded fine using Rempeg. Cell 1 of chapter one contains a paramount intro. As mentioned previously in the post by Shabbow, this can fix the problem.

 

Is there a way to strip specified times of a dvd? For example, say I want only one audio stream, the video, starting at 1:30 (one minute thirty seconds) into the movie?

 

I've just started using Scenarist for this stuff and it is AWESOME. You don't even have to really worry about cells and crap. You can take the WB or Paramount logo and make it a 'chapter' and then not include that chapter when you make it create your VOB's. This is the cool part: If my m2v is too big for one disk (normally transcoded with rempeg), scenarist seems to transcode it (VERY WELL) during the creation of the VOB files. The results so far have been far better than with anything else I have used. I don't bother making all the menus and crap, I just mux my streams together and create chapter breaks.

 

SO where can we get Scenarist? Looks to be a dvd industrial program.

 

I have heard of blockiness problems with rempeg, but I decided to give it a try. With version 152 I had very good success transcoding Fellowship of the Ring down to 62% with very little loss in quality (when viewed on my shitty TV anyway). Another thing I like about rempeg is I can utilize both of my processors to cut encode time down.

 

As for obtaining Scenarist, you can either buy it (a LITTLE expensive) or you can get it via other means. Having played with it some more, I have realized that it doesn't transcode at all unless you have one of their hardware encoders ($5000, no thanks). I've been using CCE.

For ReMPEG, the blockiness that I mentioned earlier only occured with two movies that I tried with it. ReMPEG lets you multithread the encoding process, but it really doesn't come close to taking full advantage of a two processor system. It only ever uses about 65-68% of my total processing power when used like this. Because of the way ReMPEG encodes, blocky results can occur depending on how they downsample bitrates when they encode the original video. I've found that this blockiness occurs when they drop the bitrate on like every third or every fourth frame instead of a linear downsampling of the entire video stream. ReMPEG will FURTHER cut the bitrate of these low-bitrate video frames and it will get blocky. CCE and ReMPEG on the other hand would recognize that those frames already having low bitrates and would leave them be. This is one of the reasons why results will tend to be better with these other programs.

 

I have found that using CCE gives a good m2v file, but when i used ifoedit to create the vob files from this. the picture then becomes jerky. Anyone have any suggestions. THanks

 

The results you describe are typical. It is generally accepted that you can't directly remux an m2v created with CCE into IFO Edit. Use Maestro, Scenarist or Ulead instead.

 

THanks Insite, i will try that

 

I've used ReMPEG2 to copy "Murder by Numbers" and got blocky picture as well. The start was fine, but the actual movie wasn't. I've tried this method from this site http://www.digital-forums.com/dvd2dvdr/intro.htm , and used Nero Burning ROM instead of Gear Pro DVD because it doesn't allow me to burn on my PHillips +RW/+R combo burner and media. TMPGEnc gave me great picture. DVD Maestro may be where my problem is happening, because the sound seems to be ahead of the video by like .2 seconds. How can I correct this? I know I can burn to two discs and allegedly keep exact movie quality. I've not used CCE, but what's the best way to use that (what other software and where can I get ahold of it for nothing)? THANKS.
Donald411

 

Use AC3Delay to correct your audio delay time. You can get it from Doom9 or probably here, too. If you feed it an ac3 file that was demuxed with DVD2AVI it will automatically enter the correct delay time. Works like a champ. Now with a DTS track this won't work, but I have yet to see a DTS track that had a delay other than 0ms.

 

Hey thanks.
I'll try to get that software. Can you explain how to use it and can I use it with the method I was using?
Donald411