1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Xvid play back pixelated on lcd not crt

Discussion in 'DivX / XviD' started by tjonz_98, May 7, 2009.

  1. tjonz_98

    tjonz_98 Member

    Joined:
    May 7, 2009
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    11
    Hi I am new to these forums so I hope you guys can help me.

    I have recently switched to a LCD TV for my computer display (Vizio 26"} from a 19" CRT. When I play back XVids on this display they are badly pixilated or posterized. Is there a way to filter them to make for correct play back. They never appeared this way before on my CRT monitor. I noticed that some files using the x264 codec seem to play back ok.

    System Specs in case they help:
    p4 2.8ghz
    EVGA 7800gs co Superclock
    3 gigs of pc3200
    Turtle beach Montego
     
  2. MysticE

    MysticE Active member

    Joined:
    Nov 15, 2003
    Messages:
    2,396
    Likes Received:
    0
    Trophy Points:
    66
    How are you hooking up the computer to the TV?
     
  3. tjonz_98

    tjonz_98 Member

    Joined:
    May 7, 2009
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    11
    It is connected via VGA cable. Also i am using the latest xvid codec.
     
  4. davexnet

    davexnet Active member

    Joined:
    Jul 7, 2003
    Messages:
    1,856
    Likes Received:
    0
    Trophy Points:
    66
    What about the LCD TV native resolution and refresh rate ?
    Is the computer using these settings?


     
  5. tjonz_98

    tjonz_98 Member

    Joined:
    May 7, 2009
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    11
    I am running 1360 x 768 at 60 hz which should convert over to 720p. I have done some research and believe that it may be to poor quantization on the videos. I read some where that LCDs have trouble displaying this. I however don't exactly know what quantization is or if I can correct this. Any in site would be greatly appreciated.
     
  6. davexnet

    davexnet Active member

    Joined:
    Jul 7, 2003
    Messages:
    1,856
    Likes Received:
    0
    Trophy Points:
    66
    Why don't you spin off a 10 or 20 second clip and let
    somebody take a look. (post it to a file hosting site and put the
    URL in here)

    In general, any quality loss due to too low a bitrate
    cannot be recovered. Unless, of course, you have the original
    source - in which case you can do a fresh encode.
     
  7. MysticE

    MysticE Active member

    Joined:
    Nov 15, 2003
    Messages:
    2,396
    Likes Received:
    0
    Trophy Points:
    66
    Well one thing to note is that dedicated PC monitors are different than TVs.

    Your old 19" CRT probably had a resolution of 1600 x 1200. A 24" PC monitor has 1920x1080 resolution.
     
  8. tjonz_98

    tjonz_98 Member

    Joined:
    May 7, 2009
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    11
    My CRT monitor was capable of 1600x1200 where the 26" LCD is capable of 1360x768. I think the xvids are encoded with an old version of the xvid codec using low motion which may account for the varying quality of some vids.
     

Share This Page