Extreme pixelation on fast moving or lots of light changing scenes

Discussion in 'DVD / BD-Rebuilder forum' started by mroberto1, Mar 27, 2008.

  1. mroberto1

    mroberto1 Member

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    This was my first encode with RB and most of the dvd quality is good, but on certain scenes like when there are flashing police lights, or if the camera is looking outside a car and there is lots of fast movement, I am getting some really extreme pixelation. Anyone know why its only certain scenes that are doing this and what settings I can change to fix this? I'm using all default settings and CCE 2.5. Thanks.
     
  2. dialysis1

    dialysis1 Regular member

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    What was the compression bitrate? (HIGH/LOW/TYPICAL)
    Have you tried using the Enable Bitrate Redistribution mode? You can make adjustments there to give certain scenes more bitrate and reduce it in areas that don't need so much.
     
  3. mroberto1

    mroberto1 Member

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    The ditrates were 1,900/400/1400. Something like that which I know isn't that good, but I've compressed a lot of 8gig movies with DVD shrink and never had this kind of pixelation. The bitrate redistribution sounds nice, but isn't really practical for me since I would have to encode the movie once, then watch it, not which scenes needed a higher bitrate, then re-encode again. I switched to the HC encoder so will see how that works, the time to encode has gone up a lot to 5-6 hours, which I assume will give better encoding.
     
  4. dialysis1

    dialysis1 Regular member

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    Sorry to say but that's just way too low for any movie. Do you really need to have all the extras? Best bet is to go with DL.
     
  5. creaky

    creaky Moderator Staff Member

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    extra time does not necessarily equate to better results; what CPU have you got ?. My old P4 2.4 used to average 5/6 hours for encoding
     
  6. syxguns

    syxguns Active member

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    I agree with dialysis1 on this. If you are going to keep all of the extras, then your bit rate is too low. I remove all kinds of stuff like directors commentary, previews, additional languages, etc. I also remove certain extras that I do not care to have or need. Of course I use DVDReMake Pro so that I may also change the menu's!

    I would suggest burning to DL media. In case you didn't know, ImgBurn is a great freeware burning engine. I've had success with it on DL media after Nero failed with the break to the second layer. Just my 2 cents!!
     
  7. mroberto1

    mroberto1 Member

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    I also usually use dvd remake to strip out all the extras, foreign audio and previews. This is actually a tv episode disc (Dexter). I don't like to use DL discs on anything unless I absolutely have to, so I think I'll just break up each disc onto 2 dvd-5's.
     
  8. syxguns

    syxguns Active member

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    I did a backup of Dexter and after removing certain material, and languages I got a nice backup of each disk using DVD-RB. You may split the disk if for some reason you are getting poor quality, but I don't think that should be the issue.

    How many passes do you have CCE set to or are you using CCE? I also have to agree that 5 to 6 Hours is a really long time to encode the movie. I agree with creaky that it could be your processor speed, or multiple applications running that is causing it to be this slow. I also put a version of DVD-RB on my server that is running Server 2003. That was a mistake. For some reason I get good recordings, but the OS interferes with RB causing it to slow down and it takes a good 4 to 5 Hours to do a movie using CCE with 2 passes.
     
  9. mroberto1

    mroberto1 Member

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    I'm only using the default # of CCE passes which I believe is 2. Should I up to 6 maybe? I tried loading Dexter in dvd remake but it kept crashing, so I guess rebuilder is the only option. I think it's a matter of getting the settings tweaked because most of the scenes (90%) are good quality, it's just certain areas like showing waves on water for example, basically lots of fast movement in the scenes, that I'm getting the pixelation.
     
  10. syxguns

    syxguns Active member

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    Why is DVDReMake crashing? If that is the case then you have a bad rip of the movie, not enough memory, or you are running too many apps at one time. Try using VobBlanker to get rid of the unwanted material. DVDReMake is nice for changing menu's, but VobBlanker can blank the cells just as well as DVDReMake can. Maybe that will work for you.
     
  11. h-k

    h-k Guest

    Just a shot in the dark, but do you have Rebuilder set to steal space from extras? That's a no no for episode discs.
     

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