User User name Password  
   
Saturday 27.9.2025 / 14:35
Search AfterDawn Forums:        In English   Suomeksi   Pĺ svenska
afterdawn.com > forums > dvd±r discussion > dvd±r for advanced users > progressive transcoding??
Show topics
 
Forums
Forums
Progressive Transcoding??
  Jump to:
 
Posted Message
brian100
Suspended due to non-functional email address
_
13. January 2004 @ 06:42 _ Link to this message    Send private message to this user   
I have used most of the popular Transcoding tools.(ie Shrink, DVD2ONE, Pinnacle Instantcopy.
I was just wondering if anyone had tried progressivly transcoding a DVD rather than just 1 big transcode. IE going from say (and it's only an example) 7gb - 6gb - 5gb - 4.3gb. It would be interesting to see if this process "improves" picture quality.

If no one has tried this I will try it myself and post the results.

Advertisement
_
__
drchips
Senior Member
_
13. January 2004 @ 07:49 _ Link to this message    Send private message to this user   
Hiya brian100,

A good thought..

Might I suggest that you use a film that has lots of fast action, explosions, fast movements in well lit (sunlight?) scene shots - that kind of film will tend to emphasise the artifacts to a greater extent, making it easier to see differences.

You could also run the same test once through the steps using "constant rate", and once through the steps using "variable rate" (DVD2One).

Question: how are you going to measure the results?
At each stage?
Or just overall?

Once a format is agreed, I shall give it a go, and post some results for you.

Have Fun...

Life is just more of the same:
brian100
Suspended due to non-functional email address
_
13. January 2004 @ 11:05 _ Link to this message    Send private message to this user   
To measure the results, I will try and use some "zoomed" screen shots & also my old peepers.

I think the overall results should be checked only. IE 1 large transcode & the final Progressive transcode.

You know, the more I think about this, I feel the Progressive transcode will be better. It's effectively tripling or quadroupling the process time. I know some people will say "don't bother, why not use CCE" but, hey, I can't afford CCE.

I will do this over the weekend when I have a bit more time to spare.

I will do a full backup of my Aliens special edition DVD. This one artefacts very badly.
drchips
Senior Member
_
13. January 2004 @ 11:32 _ Link to this message    Send private message to this user   
Hiya brian100,

Ok, bummer about Aliens tho', as I don't have that one.

Never mind, I shall use STAR WARS II: Attack of the Clones instead.

I shall be ripping with DVD Decrypter,
stripping extraneous stuff with IFOEdit,
creating the structure with IFOEdit,
THEN doing the DVD2One testing.

What version of DVD2One are you using?
Will you be using "constant rate" OR "variable rate"?

have Fun...

Life is just more of the same:
brian100
Suspended due to non-functional email address
_
13. January 2004 @ 11:46 _ Link to this message    Send private message to this user   
drchips :-

I will be using the latest version of DVD2One (1.4) and "Variable".
drchips
Senior Member
_
13. January 2004 @ 12:37 _ Link to this message    Send private message to this user   
OK,

I will follow suit.

Have Fun and see you after the weekend....

Life is just more of the same:
Advertisement
_
__
 
_
drchips
Senior Member
_
22. January 2004 @ 16:17 _ Link to this message    Send private message to this user   
Hiya brian100,

I ran the test and had a look at the results.

Original rip 5.59 GB
After removing extraneous audio 5.20 GB
First run 4.71 GB
Final run 4.36 GB

The final run was compared with a single run.

Screenshots compared at normal size == no visible difference.

Screenshots compared at 8x == artifacts in fast-moving and transition between light and dark (explosions).

Conclusion: no real benefit for a film of that size.

I will try the same thing with a MUCH larger source, with more steps.

Have Fun...



Life is just more of the same:
afterdawn.com > forums > dvd±r discussion > dvd±r for advanced users > progressive transcoding??
 

Digital video: AfterDawn.com | AfterDawn Forums
Music: MP3Lizard.com
Gaming: Blasteroids.com | Blasteroids Forums | Compare game prices
Software: Software downloads
Blogs: User profile pages
RSS feeds: AfterDawn.com News | Software updates | AfterDawn Forums
International: AfterDawn in Finnish | AfterDawn in Swedish | AfterDawn in Norwegian | download.fi
Navigate: Search | Site map
About us: About AfterDawn Ltd | Advertise on our sites | Rules, Restrictions, Legal disclaimer & Privacy policy
Contact us: Send feedback | Contact our media sales team
 
  © 1999-2025 by AfterDawn Ltd.

  IDG TechNetwork