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afterdawn.com > forums > archived forums > divx / xvid > reencoding an .avi that plays pixelated on a dvp642
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Reencoding an .avi that plays pixelated on a DVP642
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Balaam
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14. April 2005 @ 19:41 _ Link to this message    Send private message to this user   
How do I do this? Some avi files are unwatchable on my DVp642 because they are heavily pixelated, while they look fine on my PC. I can compare the pixelated ones to ones that play fine on my 642, but I don't know how to go about fixing them. Until now, I haven't had any reason to get into encoding. But now's the time, so please tell me what proggies will get this done easily and quickly. TIA
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shiroh
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15. April 2005 @ 01:30 _ Link to this message    Send private message to this user   
maybe you did a 1 pass encode ?
try 1 pass but constant quality.
or 2 pass
Balaam
Senior Member
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15. April 2005 @ 11:22 _ Link to this message    Send private message to this user   
Well, I'm gonna need a little more help then that. I didn't make these files. So hopefully someone who has a dvp642 and has gonna through this will tell me how they fixed theirs.
shiroh
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15. April 2005 @ 11:54 _ Link to this message    Send private message to this user   
what resolution ?
maybe cause the video is already in low quality and upsized.
that could be it.
Senior Member
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15. April 2005 @ 12:30 _ Link to this message    Send private message to this user   
I also have a DVP642 and I've noticed on Some Xvid and Divx files that when they 1st load the come up all pixelated if I press the system Menu button on the remote twice it brings me back to the film and the pixelation is no more.... Strange but it works...
Balaam
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15. April 2005 @ 13:59 _ Link to this message    Send private message to this user   
@shiroh:
Here is the info that is displayed by GSpot for the pixelated avi:

x:y - 512x288 (1.78:1) [=16:9]
bitrate - 711 kb/s
FPS - 25.000
Qf - 0.193 bits/pixel

Here's info for a vid that plays fine on my dvp642:

x:y - 624x352 (1.77:1) [=39:22]
bitrate - 843 kb/s
FPS - 23.976
Qf - 0.160 bits/pixel

So, I'm getting the feeling that theres nothing I can do to improve this files, if the initial quality is so low. Am I right?

@tmfloria:
I use that trick often for audio problems, but I didn't even think to try it for this. And it actually worked for one of the two avi's I've had a chance to try it with, so thanks for the suggestion. It's not fool proof, but it's better then nothing.
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shiroh
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15. April 2005 @ 15:32 _ Link to this message    Send private message to this user   
i'm not sure how dvp642 resize it. but for a regular dvd, usually it only resize horizontally, 480x480 will look like a regular dvd for a normal tube tv.
vcd is 352x240, so it will resize both ways up & down. so the blocks that already look awful in orinal res will look more horrible.

horizontal resize is good.

so you could upsize it before encoding using lanczos algorithm or something.

by any chance are you watching this on a HDTV ? cause that will look horrid from such a source
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