Español Français Deutsch Italiano Nederlands Svenska Dansk Japanese Chinese (Simplified) Russian
 
AVForums.com twitter AVForums is a member of CEDIA. THX certified reviewer.  Click for more information. AVForums reviewers are ISF Certified.  Click for more information.
 
The UK's biggest and best home entertainment electronics forums  
4 million visitors each month


Forums Register Blogs Information Social Groups Search Today's Posts Mark Forums Read
Go Back   AVForums.com > Home Electronics > Camcorders and Video Editing

Today's price checkPowered by
Panasonic SDR-S26
Sony HDR-XR520VE 240GB
Canon Legria FS200
Panasonic HDC-SD10
Panasonic SDR-S26 
Sony HDR-XR520VE 240GB 
Canon Legria FS200 
Panasonic HDC-SD10 
Sony DCR-SR37E 60GB 
JVC GZ-MG630 60GB 
Sanyo Xacti VPC-CG10 
JVC GZ-MS120 
Panasonic HDC-SD200 
Samsung SMX-C10 
 More...Prices updated November 22nd at 9:30pm and include delivery.


Reply
 
Thread Tools Display Modes
Old 24-06-2005, 4:35 PM   #1 (permalink)
Jubistraus
Guest
 
Posts: n/a
Unhappy Rendering problems

Hi guys

I'm with problems to render my video. The result is good, if I don't have moviment in my videos... not extreme moviments like a F-1 racing, just people waving. When I watch the .avi directly from my camcorder (GS200PAL) to my TV set, or even in my PC, the scenes are perfect. After the rendering process from avi to mpeg I can notice a "pixel" efect in my PC. In my TV set this efect is worse. I've tried some rendering options and the NTSC seems to be the best to minimize the efects in the moviments. I've heard that could be a field order problem and I've tried to change from bottom field to upper field first but the result in PAL is always bad. It seems that when I convert to NTSC something is going to be fixed. Unhappily I don't have any clue that it could be. I'd like to keep the PAL. I'm rendering with Vegas 5. Just in case I've tried to render with TMPGEnc but the result is pretty much the same. I put some sample files at http://geocities.yahoo.com.br/jubistraus/ If a good soul could help me I'll be gratefull forever.
  Reply With Quote
Old 24-06-2005, 5:31 PM   #2 (permalink)
Senior Member
 
vonhosen's Avatar
 
Join Date: Jan 2003
Location: London
Posts: 1,523
Thanks: Gave 0, Got 16
Wrong field order will give what I would describe as jerky motion with movement, rather than pixelated.

What the field order is isn't particularly important, what is important is that it is labelled correctly at all stages so that your software doesn't do the wrong thing with it.

DV capture from camcorder should be lower field first.
Analogue capture will be dependent on the capture device.

If it was captured as lower field first, you need to ensure that this is what the editing software is seeing it labelled as & what the MPEG encoder is informed it is as source when it comes to encoding.
vonhosen is offline   Reply With Quote
Old 24-06-2005, 6:20 PM   #3 (permalink)
Jubistraus
Guest
 
Posts: n/a
Hi again,

If I check the properties file Vega informs lower field. I've captured from my camcorder with Vega. Could my camcorder be an upper field and Vega misunderstand this information? I didn't find any specific information about my cam (NV-GS200) just that DV should be lower field. If I understand its doesn't matter if you keep the same information in capture and edition. Just in case, I've captured the file with the WMM2 but I didn't see any difference. Unhappilly WMM2 doesn't bring any information about field order. Anyway, as I said, I've tried to render with lower and upperfield options and both of them are really noise (jerky, pixelated, the files are at http://geocities.yahoo.com.br/jubistraus/index.html for impressions) in PAL. In NTSC the result is better but far from good. Is there any other thing that could I check? I'd like to thank you very much for all help.

Regards,
  Reply With Quote
Old 24-06-2005, 7:16 PM   #4 (permalink)
Senior Member
 
vonhosen's Avatar
 
Join Date: Jan 2003
Location: London
Posts: 1,523
Thanks: Gave 0, Got 16
Try taking a small sample of your .avi file , change how it is labelled in properties to opposite field order (ie upper field if it's currently labelled as lower). Then render it to MPEG & look at the results, does it make any difference ?
vonhosen is offline   Reply With Quote
Old 24-06-2005, 8:16 PM   #5 (permalink)
Jubistraus
Guest
 
Posts: n/a
I've already tried this. I think the result is worse than before. I put the file in http://br.geocities.com/jubistraus/sample_pal_upper.mpg
  Reply With Quote
Old 24-06-2005, 9:32 PM   #6 (permalink)
Senior Member
 
vonhosen's Avatar
 
Join Date: Jan 2003
Location: London
Posts: 1,523
Thanks: Gave 0, Got 16
http://neuron2.net/LVG/interlacing.html
vonhosen is offline   Reply With Quote
Old 24-06-2005, 11:26 PM   #7 (permalink)
Jubistraus
Guest
 
Posts: n/a
Very good link. I think that I have a very unusual problem. I've passed all the steps at "Classification High Resolution Video" in the page http://neuron2.net/LVG/classifyhighres.html and I've tried all filters with VirtualDub and none of them seems to correct my video. I think it's better start a thread in a more specific forum.
  Reply With Quote



Bookmarks

Tags
problems, rendering
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


All times are GMT. The time now is 9:33 PM.

AV Forums
Optimised for Firefox.
RSS Feed
AVForums.com is owned and operated by M2N Limited.
Copyright © 2000-2009 M2N E. & O. E.
Global Gold
Web Hosting