Mobile/PDA About Us Advertise here
User User name Password  
  Not registered yet? Register here.
Lost your password? Click here. 		 
  Home   News   Guides   Downloads   Glossary   Hardware   Profiles   Forums   v4  
 Advertise at AfterDawn.com     Link to us!     Private messages     Compose a private message     List of all updated threads     Threads without replies     Search messages
Sunday 22.12.2024 / 00:08
Search AfterDawn Forums:        In English   Suomeksi   På svenska
afterdawn.com > forums > digital video > digital camcorders > digital camcorder dv output to mpeg2 gives juddery image
Show topics
 
Forums
Forums
digital camcorder dv output to MPEG2 gives juddery image
  Jump to:
 
Posted Message
Sharples
Newbie
_ 		8. August 2003 @ 04:16 _ Link to this message    Send private message to this user   
I firewire Digital 8 video onto my PC and edit movies with Pinnacle.
I use TMPEnc to convert to SVCD compatible MPEG2.
Any motion in the resulting video is "eyewateringly" juddery. This can be considerably improved if I mess around with the interlace setings of TMPGEnc, but is still significantly less smooth than the original camcorder tape. This is a UK system so I am of course talking about PAL here.

I know one has to compromise with image resolution when going from DV to SVCD, but does anyone know why the image is not smooth? And is there anything I can do about it?
[ + quote]
Advertisement
_ 		__
jnihil
Moderator
_ 		8. August 2003 @ 08:58 _ Link to this message    Send private message to this user   
You can smooth out the backgrounds using the 'noise reduction' function in TMPGEnc. The mpeg encoder then spends less data on the backgrounds and more on the movements. The noise reduction in TMPGEnc is slow though. I usually use 'temporal cleaner' in VirtualDub and frameserve that into TMPGEnc. The defaults for temporal cleaner works well in most cases, but you may want to tweak it to get the most out of your SVCD.

Rgds,
jnihil.
[ + quote]
Sharples
Newbie
_ 		11. August 2003 @ 05:04 _ Link to this message    Send private message to this user   
I had assumed that the answer lay somewhere in the use (or my misuse) of interlace so it never ocurred to me to give noise reduction a try.

However I shall now do so.

Many thanks.
[ + quote]
malum
Senior Member
_ 		2. September 2003 @ 02:49 _ Link to this message    Send private message to this user   
You are rendering with bottom field first, yes?
If not then you should. DV is bottom field first.
I think the default setting for TMPEG is top field first (Studio movies are usually top field first)
I have made SVCD's that have no juderring opn movement.
If you original source is interlaced (likely) then you should render interlaced but in the right field order.
[ + quote]
Advertisement
_ 		__
 
_
Sharples
Newbie
_ 		15. September 2003 @ 07:59 _ Link to this message    Send private message to this user   
Your advice makes sense. The judder is so extreme that it almost seems that objects jerk backwards. Using de-interlace stops this eye watering effect but is still not smooth (presumably because I am throwing away half of the motion information).
I shall now attempt to change the field order.
Many thanks.
[ + quote]
MikeS
afterdawn.com > forums > digital video > digital camcorders > digital camcorder dv output to mpeg2 gives juddery image
 

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
 
  © 1999-2024 by AfterDawn Ltd.

  IDG TechNetwork