Proper way to downrez HD > Sd at DVinfo.net
DV Info Net

Go Back   DV Info Net > High Definition Video Acquisition > General HD (720 / 1080) Acquisition
Register FAQ Today's Posts Buyer's Guides

General HD (720 / 1080) Acquisition
Topics about HD production.

Reply
 
Thread Tools Search this Thread
Old June 6th, 2007, 08:05 AM   #1
Major Player
 
Join Date: Jan 2007
Location: Warwick, Rhode Island
Posts: 740
Proper way to downrez HD > Sd

I accidentally started my first wedding in HDV, the rest was done SD. Is it safe to just drop them all in an SD project in Premiere and half size the HDV clips?
__________________
Cinematography Site
Nathan Quattrini is offline   Reply With Quote
Old June 6th, 2007, 10:41 AM   #2
New Boot
 
Join Date: Dec 2006
Location: uk/scotland/
Posts: 17
why not downconvert in camera from hdv to dv to try and match to your sd footage which should be a better match(depends on cameras used)
John Millar is offline   Reply With Quote
Old June 6th, 2007, 10:51 AM   #3
Major Player
 
Join Date: Jan 2007
Location: Warwick, Rhode Island
Posts: 740
i used the Canon H1 and a firestore....how would I downconvert 'in camera'?
__________________
Cinematography Site
Nathan Quattrini is offline   Reply With Quote
Old June 6th, 2007, 02:52 PM   #4
Regular Crew
 
Join Date: Jul 2006
Location: Tampa, Florida
Posts: 261
Let me get your question straight. You filmed a wedding, 1 wedding. The beginning of the wedding was in HDV and the rest of the clips were SD. Now you have to edit it. Your question is, “how should I downconvert the first few shots to SD from HDV”.

If that IS your question then yes in your NLE you can just half size the HD clips. Go to about 45% and it should be fine. Unfortunately the damage has already been done by shooting in HDV. You MAY see compression artifacts, and unfortunately there is no way to remove them. The advantage of shooting SD is there are not as many compression artifacts. I doubt it will be noticeable this time, but watch out in the future.

By the way. Even if you didn’t downconvert there are still compression artifacts in most HDV footage. That’s why for now I only shoot SD, but I’ll save this chat for another time.

Have fun
Alan James is offline   Reply With Quote
Old June 6th, 2007, 03:16 PM   #5
Major Player
 
Join Date: Nov 2004
Location: Dallas
Posts: 747
Quote:
Originally Posted by Alan James View Post
Let me get your question straight. You filmed a wedding, 1 wedding. The beginning of the wedding was in HDV and the rest of the clips were SD. Now you have to edit it. Your question is, “how should I downconvert the first few shots to SD from HDV”.

If that IS your question then yes in your NLE you can just half size the HD clips. Go to about 45% and it should be fine. Unfortunately the damage has already been done by shooting in HDV. You MAY see compression artifacts, and unfortunately there is no way to remove them. The advantage of shooting SD is there are not as many compression artifacts. I doubt it will be noticeable this time, but watch out in the future.

By the way. Even if you didn’t downconvert there are still compression artifacts in most HDV footage. That’s why for now I only shoot SD, but I’ll save this chat for another time.

Have fun

What are you talking about? damage has already been done? LOL so we should all sell our HDV camera and buy SD camera to shoot from now on? or keep our HDV camera but shoot in SD?. LOL
__________________
Khoi Pham
www.proeditproductions.com
Khoi Pham is offline   Reply With Quote
Old June 7th, 2007, 06:27 AM   #6
Inner Circle
 
Join Date: Aug 2005
Location: Atlanta/USA
Posts: 2,515
Quote:
Originally Posted by Alan James View Post
You MAY see compression artifacts, and unfortunately there is no way to remove them. The advantage of shooting SD is there are not as many compression artifacts. I doubt it will be noticeable this time, but watch out in the future. By the way. Even if you didn’t downconvert there are still compression artifacts in most HDV footage. That’s why for now I only shoot SD, but I’ll save this chat for another time. Have fun
Well, the reply is funny indeed, and if you just wanted to humor us, I'll give you nine out of ten, Alan (one point penalty for not mentioning that this is a joke)!

But seriously, HDV footage can be easily ruined by improper downrezzing. From my experience it's not easy to mix DV and HDV footage on the same timeline (my experience is with PremPro) and still get good results. If it's possible, I would suggest working the HDV portion in HDV and downconverting only at the end to SD mpeg2 for DVD, I suppose that's your final product.

If, for any reason, you need to mix the footage on the same timeline, I would decompress and downrez the HDV portion with VirtualDub MPEG2 using a high quality intermediate (uncompressed or HuffYUV) and add that to my SD timeline.
__________________
Ervin Farkas
www.AtlantaLegalVideo.com
Ervin Farkas 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 > High Definition Video Acquisition > General HD (720 / 1080) Acquisition


 



All times are GMT -6. The time now is 11:50 AM.


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