Are all mpeg2 files created equal? at DVinfo.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 July 29th, 2010, 12:02 AM   #1
Major Player
 
Join Date: Feb 2009
Location: Philadelphia, pa
Posts: 705
Are all mpeg2 files created equal?

I know that different codecs have different quality levels when burning a DVD. But what about when simply creating an mpeg2 file. Can one nle system create a higher quality mpeg 2 than another?
Kevin Lewis is offline   Reply With Quote
Old July 29th, 2010, 12:19 AM   #2
Inner Circle
 
Join Date: Nov 2006
Location: Tallahassee, FL
Posts: 4,100
Quote:
Originally Posted by Kevin Lewis View Post
Can one nle system create a higher quality mpeg 2 than another?
You better believe it!
__________________
DVX100, PMW-EX1, Canon 550D, FigRig, Dell Octocore, Avid MC4/5, MB Looks, RedCineX, Matrox MX02 mini, GTech RAID, Edirol R-4, Senn. G2 Evo, Countryman, Moles and Lowels.
Perrone Ford is offline   Reply With Quote
Old July 29th, 2010, 01:47 PM   #3
Major Player
 
Join Date: Feb 2009
Location: Philadelphia, pa
Posts: 705
I know MPEGS can consist of various make ups, but I typcally export mpeg2 1080i files that ultimatly make there way to dvd. If I use another NLE to create a file with those same specs, is it still possible for one 1080i to have a higher quality then another 1080i. I thought that because were talking about a digital file, that the mpegs would be the exact same quality. I typically edit in Pinnicale Studio 12. I like the simplicity of it but want the option to export to another system where I can make my dvd's more compatible with the various players that are out there.It seems that the dvds that I create from this program dont always work well on various players.
Kevin Lewis is offline   Reply With Quote
Old July 29th, 2010, 01:53 PM   #4
Inner Circle
 
Join Date: Nov 2006
Location: Tallahassee, FL
Posts: 4,100
Quote:
Originally Posted by Kevin Lewis View Post
I know MPEGS can consist of various make ups, but I typcally export mpeg2 1080i files that ultimatly make there way to dvd. If I use another NLE to create a file with those same specs, is it still possible for one 1080i to have a higher quality then another 1080i.
Not only is it possible, it's essentially guaranteed.

Quote:
Originally Posted by Kevin Lewis View Post
I thought that because were talking about a digital file, that the mpegs would be the exact same quality.
We are talking about a digital file. But not a lossless one. Each Mpeg2 encoder is looking at the source material and making hundreds of guesses per frame of video about how to encode that information. Some encoders guess better than others. Some take their time and work for best quality. Others try to appease the crowd who wants it fast. Some walk the line between the two extremes. All Mpeg2 is not created equally. How much artifacting do you see in Hollywood DVDs? How much do you see in your home burns?

Quote:
Originally Posted by Kevin Lewis View Post
I typically edit in Pinnicale Studio 12. I like the simplicity of it but want the option to export to another system where I can make my dvd's more compatible with the various players that are out there.It seems that the dvds that I create from this program dont always work well on various players.
__________________
DVX100, PMW-EX1, Canon 550D, FigRig, Dell Octocore, Avid MC4/5, MB Looks, RedCineX, Matrox MX02 mini, GTech RAID, Edirol R-4, Senn. G2 Evo, Countryman, Moles and Lowels.
Perrone Ford is offline   Reply With Quote
Old August 2nd, 2010, 12:09 PM   #5
Major Player
 
Join Date: Mar 2007
Location: Wurzburg, Germany
Posts: 316
Quote:
Originally Posted by Perrone Ford View Post
(...)
How much artifacting do you see in Hollywood DVDs? How much do you see in your home burns?
As far as I know, good Hollywood DVDs are kind of "manually encoded". That is if the encoder's choice of bitrate and whatnot for a certain scene is bad, then this scene will be encoded with better settings until it fits.

And of course there is always good software and bad software. Some encoders just do a much better job than others.
Heiko Saele 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...

Professional Video
(800) 833-4801
Portland, OR

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

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

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

 



Google
 

All times are GMT -6. The time now is 11:55 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network