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Why do DVD's have pixilization? really starting to bug me/..

Zebo

Zebo

Elite Member
I spent quit a bit of money on a HDTV and a progressive scan DVD player. I use the 3 video cables and digital for sound. Why do some movies just suck. Watched Mummy Returns and Diehad criterian collection thing last night and noticed major pixils, especially in darker sceens. Any sugesstion or do some studios dumb down the quality?

Thanks
 
DVD's are a compressed, digital video format - Pixelation and artifacts are to be expected.

That having been said, using component video I don't think you should be seeing artifacts like that.

I see virtually no artifacting on my 27" Wega using component video from a Pansonic DVD player, & when I do it's usually due to a dirty or scratched disk. Have you tried another DVD player?

Viper GTS
 
i got a plain jane 35" sony trinitron and never noticed any pixelation while playing dvds.. using s-video and opitical digital for sound..
 
Originally posted by: Legendary
Using S-video might help. Cables can be found at any circuit city or radioshack.
Click to expand...

He is using component video (3 video cables + separate audio), s-video would be a step down.

Viper GTS
 
Originally posted by: Viper GTS
DVD's are a compressed, digital video format - Pixelation and artifacts are to be expected.

That having been said, using component video I don't think you should be seeing artifacts like that.

I see virtually no artifacting on my 27" Wega using component video from a Pansonic DVD player, & when I do it's usually due to a dirty or scratched disk. Have you tried another DVD player?

Viper GTS
Click to expand...

Hmm strange... Like I said some are just awesome and somw are really pixilized. My DVD player is toshiba progessive but that might be the problem? OK I guess I'kk have to try another

Thanks
 
What kind of HDTV did you buy. If its a Projection TV I would have that thing calibrated by a ISF technician certified on your specific TV. Mind you its about 200 depending on where you live and which brand but Ive see night and day differences...
 
I take really good care of my dvd's, always put them in the case after viewing and they are never dirty. I think it's either the DVD, the individual disk quality or my TV🙂
 
Originally posted by: Viper GTSDVD's are a compressed, digital video format - Pixelation and artifacts are to be expected.
Click to expand...
It's more than just compression.

DVDs are encoded in MPEG 2, which is a lossy compression algorithm, much like .jpg. (Unlike a lossless algorithm such as in WinZIP.)

The surface of the DVD has just so much storage capacity. (~9GB on a dual layer disk.) The MPEG stream is a variable bitrate stream. So the engineer creating the disk has to make tradeoffs on content vs. bitrate (where bitrate=quality). In order to get all those extras on the disk, with subtitles in 8 languages and sixteen audio tracks with the behind the scenes footage and interviews with the director's second cousin, they have to use more aggressive compression to get it all to fit in the same amount of space. The more aggressive the compression is, the more artifacts you will see.

 
Originally posted by: arod
What kind of HDTV did you buy. If its a Projection TV I would have that thing calibrated by a ISF technician certified on your specific TV. Mind you its about 200 depending on where you live and which brand but Ive see night and day differences...
Click to expand...

It's a Samsung 55" HDTV..Rear projection I'm sure. cost around 2500 but I forget model #..
 
What the heck is "Diehad criterian collection"??

I assume you mean Die Hard? Criterion didn't release that title...Fox did. Or maybe there is a movie titled Diehad? 😕

That having been said, using component video I don't think you should be seeing artifacts like that.

I see virtually no artifacting on my 27" Wega using component video from a Pansonic DVD player, & when I do it's usually due to a dirty or scratched disk. Have you tried another DVD player?

Viper GTS
Click to expand...
Using better cable would actually show more artifacting because it's higher detail. You will never see digital artifacts on a 27" tube either...on a 100" projection screen is a different story though...transfers that aren't flawless can usually look like sh*t.
 
Originally posted by: bryce
Originally posted by: LordMaul
pixilization


Hmm...sounds like a medical side effect.
Click to expand...

"May experience pixelization, as a result kitten killing is not recommended."
Click to expand...

LOL

BTW you mispelled pixilization😀
 
Originally posted by: kami
What the heck is "Diehad criterian collection"??

I assume you mean Die Hard? Criterion didn't release that title...Fox did. Or maybe there is a movie titled Diehad? 😕

That having been said, using component video I don't think you should be seeing artifacts like that.

I see virtually no artifacting on my 27" Wega using component video from a Pansonic DVD player, & when I do it's usually due to a dirty or scratched disk. Have you tried another DVD player?

Viper GTS
Click to expand...
Using better cable would actually show more artifacting because it's higher detail. You will never see digital artifacts on a 27" tube either...on a 100" projection screen is a different story though...transfers that aren't flawless can usually look like sh*t.
Click to expand...

Actually, I saw some pretty damn nasty stuff when I connected my DVD player to my TV with composite video. Whether it could be considered artifacting or not I don't remember, but especially in darker areas of the screen the color transitions were HORRIBLE, resulting in jagged areas of pixelated color. Not digital artifacting, of course, but it still looked awful.

On a side note, on the whole DVD compression issue...

I for one would much rather have the movie + trailer, nothing else. Both in anamorphic format, of course. If you must put extras put them on another disc, don't kill the movie with compression.

Viper GTS
 
I mean artifacts right in the source material. Composite just looks crappy period...basically just a poor signal and that's why it looks bad. Combining the chroma and brightness into one cable doesn't help either.
 
I nover notice artifacts on a laser disk like on DVD. Is that becasue It's not a lossy compression?
 
Originally posted by: Carbonyl
I nover notice artifacts on a laser disk like on DVD. Is that becasue It's not a lossy compression?
Click to expand...

Yep.

The signal on the LaserDisc is essentially straight S-video.
 
What kind of HDTV did you buy. If its a Projection TV I would have that thing calibrated by a ISF technician certified on your specific TV. Mind you its about 200 depending on where you live and which brand but Ive see night and day differences...
Click to expand...
Where for 200$ I have yet to meet a real ISF tech that will do the job for 200$ Also a ISF calibration is not going to get rid of pixilization. All a good IFS calibration does is get the Grey Scale adjusted as close to 6500 D Kelvin that the unit will allow.

Rain
 
hm, well i guess your being spoiled by HDTV's superior resolution. dvd res isn't all that hot u know😛 dvd transfers vary widely in quality. some cheesy companies will squeeze a low bitrate transfer in with too many extras on the same disc... or won't use animorphic so it looks like crap.. sometimes for those cr@ppy featureless discs they pretty much transfer off the ld it seems.

odd on the diehard collection though, that transfer was rather good. i'm not sure if your refering to compression artifacts or that you can simply see the individual pixels cuz of resolution..which u shouldn't if you have a big projection screen, those tend to blur a bit


if your using dlp, well those have pixel problems by themselves😛 u gotta sit way back or else u see damned grids.
 
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