Resolution: I don't understand something, please explain. at DVinfo.net
DV Info Net

Go Back   DV Info Net > The Tools of DV and HD Production > Open DV Discussion

Open DV Discussion
For topics which don't fit into any of the other categories.

Reply
 
Thread Tools Search this Thread
Old May 19th, 2008, 10:28 PM   #1
Major Player
 
Join Date: Apr 2008
Location: OC, CA
Posts: 344
Resolution: I don't understand something, please explain.

Commercial SD DVD movie is MPEG-2.
For burning my home movie project, I of course selected MPEG-2 as well.
Why is it that when I play the commercial DVD movie, blown up full screen on a 28" monitor (1920 x 1200), I don't see jagged edges. However, when playing my home made DVD, there are jagged edges. Both DVDs are 720 x 480, right?

Thanks,
Norris Combs is offline   Reply With Quote
Old May 19th, 2008, 10:42 PM   #2
Inner Circle
 
Join Date: Jun 2003
Location: Toronto, Canada
Posts: 4,750
You might get jagged edges depending on how you downconvert your material.

The MPEG2 encoding may also introduce stairstepping.

What is your source material?
Glenn Chan is offline   Reply With Quote
Old May 19th, 2008, 11:28 PM   #3
Regular Crew
 
Join Date: May 2008
Location: Nanaimo, BC, Canada
Posts: 46
If source material for your home DVD is interlaced (like 60i footage from a miniDV camera) then you'll see jagged edjes on computer monitor which is a natively progressive device, unless de-interlacing feature is enabled in your software DVD player.
Commercial movie DVDs are made of progressive material (film) so there is no interlacing artefacts while playing them on PC.
Maybe this is your case - interlaced vs de-interlaced source on progressive display.
Stas Bobkov is offline   Reply With Quote
Old May 20th, 2008, 10:32 AM   #4
Major Player
 
Join Date: Apr 2008
Location: OC, CA
Posts: 344
Quote:
Originally Posted by Glenn Chan View Post
You might get jagged edges depending on how you downconvert your material.

The MPEG2 encoding may also introduce stairstepping.

What is your source material?
The source material is HD from a Canon HV10.
Thanks,
Norris Combs is offline   Reply With Quote
Old May 20th, 2008, 10:35 AM   #5
Major Player
 
Join Date: Apr 2008
Location: OC, CA
Posts: 344
Quote:
Originally Posted by Stas Bobkov View Post
If source material for your home DVD is interlaced (like 60i footage from a miniDV camera) then you'll see jagged edjes on computer monitor which is a natively progressive device, unless de-interlacing feature is enabled in your software DVD player.
Commercial movie DVDs are made of progressive material (film) so there is no interlacing artefacts while playing them on PC.
Maybe this is your case - interlaced vs de-interlaced source on progressive display.
I played the home DVD using 3 different applications: Nero, Window Media Center, and Windows Media Player. Do you know if this "de-interlacing function" is available with what I have? What do YOU use to play your home DVDs?

Thanks,
Norris Combs is offline   Reply With Quote
Old May 20th, 2008, 04:10 PM   #6
Regular Crew
 
Join Date: May 2008
Location: Nanaimo, BC, Canada
Posts: 46
I rearly play DVDs on computer (normally on a standalone DVD player) but when I do I use PowerDVD, it de-interlaces video by default. Windows Media Player de-interlaces by default too. I'm not familiar with other two you mentioned but I can also recommend VLC player with the most extended options for de-interlacing.
I didnt realize you had an HD source. This might be downscaling distortions then, nothing to do with de-interlacing. It's hard to say though without seeing the picture.
Stas Bobkov is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK


DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > The Tools of DV and HD Production > Open DV Discussion

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



All times are GMT -6. The time now is 07:44 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2024 The Digital Video Information Network