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Home: Video University Forums: HDV:
Difference between HD and DVD?

 
 


Darren
User


Apr 21, 2006, 5:50 AM

Post #1 of 10 (2665 views)
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Difference between HD and DVD? Can't Post
Please excuse my ignorance, but I have some basic questions about HD.

I know nothing about the subject except it has a better picture than DVD. Please bear with me. Crazy

I am making a 35mm motion picture telecine and hope to use a professional megapixel camera linked to my PC to capture and save each frame.

Others at another forum said a megapixel camera will have better dynamic range than a HD video camera (plus I need a batter camera for my eBay auctions).

The images lensed by the camera will somehow travel to my PC via a ? cable.

I want these individual frames to be saved in the HD video format using a telecine program. Will also downsample later to SD.

Here is my first question. What is the difference between an individual DVD frame and a HD frame besides aspect ratio?

What pixel resolution will I have to capture each motion picture film frame at to achieve the resolution (or better) of HD?

I have been doing a great deal of research into building this HD telecine. About $700 has already been spent on the 35mm film mechanism to be modified. I am very serious about this and am getting help on the 35mm film side from several film archivists.

Darren Nemeth
Owner of "Giant Squid Audio Lab"


MLiebergot
Veteran


Apr 21, 2006, 10:57 AM

Post #2 of 10 (2656 views)
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Re: [Darren] Difference between HD and DVD? [In reply to] Can't Post
Darren, you may want to contact Roger Evans at http://www.moviestuff.tv

If you don't know, they build fantastic affordable telcine units (that have enlarged gates, capturing full frame), that either record to camera for transfer or get captured directly to your system.
He is very helpful and responsive. He might even be developing a system or have one available for HD already.

Email:
moviestuff@sbcglobal.net

Phone number is:
1-8MM-TEL-CINE

Michael

Cameras: I do use them.
Audio: Yes, it does come with audio if you like.
Software: I am learning...
Support: I need all that i can get.
Computer: MAC BABY!


videobear
Veteran


Apr 21, 2006, 11:19 AM

Post #3 of 10 (2651 views)
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Re: [Darren] Difference between HD and DVD? [In reply to] Can't Post
A good quality telecine for 35mm is going to be VERY expensive. You'll be much better off subcontracting the telecine work to a company that does it every day.




Regards,
Doug Graham
Panda Productions


Darren
User


Apr 21, 2006, 1:41 PM

Post #4 of 10 (2637 views)
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Re: [MLiebergot] Difference between HD and DVD? [In reply to] Can't Post
In Reply To
Darren, you may want to contact Roger Evans at http://www.moviestuff.tv

If you don't know, they build fantastic affordable telcine units (that have enlarged gates, capturing full frame), that either record to camera for transfer or get captured directly to your system.
He is very helpful and responsive. He might even be developing a system or have one available for HD already.
 Already contacted him. I can't use his program for HD. The film I will be transfering will be original 1920s 35mm film prints. I am looking right now at using a megapixel camera to take the individual frame shots. Using the computer as the data storage I hope ot find a program to combine all image files in sequence to make HD video.

Darren Nemeth
Owner of "Giant Squid Audio Lab"


Darren
User


Apr 21, 2006, 1:48 PM

Post #5 of 10 (2634 views)
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Re: [videobear] Difference between HD and DVD? [In reply to] Can't Post
In Reply To
A good quality telecine for 35mm is going to be VERY expensive. You'll be much better off subcontracting the telecine work to a company that does it every day.

I can't afford any of that. Unsure

There are 31 reels of 35mm silent film to transfer for my own home grown DVD / HD release. When all is done, with luck, I will break even.

I have a 35mm Moviola which I will point a camera into to make the HD myself.

A Moviola expert in Hollywood who rents film editing equipment says these have been used for telecines and the project is do-able.

I am getting advise from film archivsts over the net, and VU too.

Can't turn back now because I have many $$$ into it already. Crazy

Darren Nemeth
Owner of "Giant Squid Audio Lab"


JohnnyRoy
Novice

Apr 28, 2006, 3:39 PM

Post #6 of 10 (2542 views)
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Re: [Darren] Difference between HD and DVD? [In reply to] Can't Post
In Reply To
The images lensed by the camera will somehow travel to my PC via a ? cable.

If the images are being captured on a digital still camera then I would use Sony Vegas software for this job. Just capture them on your memory card and copy them to a folder on your hard drive. Then in Vegas you can import a image sequence as a movie (they just have to be in a numbered sequence like IMG001, IMG002, etc, which most digital camears do anyway), tell it the frame rate, and Vegas will make each image a new frame at that rate. No need for special real-time capture.

In Reply To
Here is my first question. What is the difference between an individual DVD frame and a HD frame besides aspect ratio?

Resolution is the difference. A standard DVD in NTSC mode is 720x480 resolution while HD is 1920x1080i or 1280x720p resolution. (there are two resolutions defined in the standard) 1080 is interlaced while 720 is progressive.

In Reply To
What pixel resolution will I have to capture each motion picture film frame at to achieve the resolution (or better) of HD?

1920x1080 or 1280x720 are both HD resolutions

In Reply To
I hope ot find a program to combine all image files in sequence to make HD video.

I think Sony Vegas might be a good approach. Try it on a few still images from your camera and see. You can download a 30-day trial so there will be no guesswork. See if it will either meet your needs.

~jr
Co-author: VASST Instant ACID and Instant Vegas Movie Studio books
Developer: VASST Ultimate S, Celluloid, GearShift, and other VASST Software plug-ins
Web site: http://www.johnrofrano.com


bbalser
User

May 9, 2006, 12:57 PM

Post #7 of 10 (2403 views)
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Re: [Darren] Difference between HD and DVD? [In reply to] Can't Post
HD is an acquisition format, DVD is a delivery format, they don't "compare", they do very different things. DVD can actually do HD now, too. They are such different animals, they con't "compare" if you're now in the aquisition stage of your project. If you ask for film to be transfered and delivered on DVD, that's just moronic. Have it delivered in 720p HD, which is as close to film as you'll get.

I'm in the middle of a major documentary backed by a broadcast company. I've learned a lot about this process in a very short time.


Darren
User


May 9, 2006, 1:01 PM

Post #8 of 10 (2402 views)
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Re: [bbalser] Difference between HD and DVD? [In reply to] Can't Post
In Reply To
HD is an acquisition format, DVD is a delivery format, they don't "compare", they do very different things. DVD can actually do HD now, too. They are such different animals, they con't "compare" if you're now in the aquisition stage of your project. If you ask for film to be transfered and delivered on DVD, that's just moronic. Have it delivered in 720p HD, which is as close to film as you'll get.

I'm in the middle of a major documentary backed by a broadcast company. I've learned a lot about this process in a very short time.

I need to know for a future HD video release I am going to do when the format is commonly used.

Darren Nemeth
Owner of "Giant Squid Audio Lab"


Postal_Boy
Veteran


May 9, 2006, 4:38 PM

Post #9 of 10 (2390 views)
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Re: [Darren] Difference between HD and DVD? [In reply to] Can't Post
If you record the data at HDV resolution/standard, then you can always "downsize" it for current technology and keep the original files for later when you can distribute in a high definition format.

In other words, a DVD is a disk and nothing more. It holds bits. Its limitations are not "resolution", but capacity. A standard dvd holds about 4.7 GB (just over 4 usable) per layer. Many hollywood dvds are dual layer, meaning there are actually 2 layers of recording material in the disk, allowing them to put over 9 gb of data on one disk.

What you are talking about is data acquisition, or recording the data to an original format. DVD, HDVD, etc...is all irrelevant at the capture and edit stages. You will need a VERY large hard drive storage system to store telecined footage from whatever source, and you will HAVE to compress it to a different format once you are done editing in order to fit it on any current and future delivery systems.


-Postal
__________________________

PD-170, Dual athlon 2200+, 1gig ram,, Vegas, Combustion, Photoshop, dual monitor (ashamed of the video card, so I won't mention it), Samson wireless, and a couple of one-chippers (sony) just for the heck of it. - And an IRIVER

(This post was edited by Postal_Boy on May 9, 2006, 4:43 PM)


KevinShaw
Veteran

Jul 13, 2006, 1:53 PM

Post #10 of 10 (2032 views)
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Re: [Darren] Difference between HD and DVD? [In reply to] Can't Post
In Reply To
I need to know for a future HD video release I am going to do when the format is commonly used.
If you're asking when HD DVD players will be widely used in average consumers' homes, that's looking like it will be a while. Even many 'early adopters' are holding off because of the struggle between Toshiba and Sony over two different times of HD players, plus the players are expensive at $499-999 each. I'd say 2-3 years at least now before HD DVD players are widespread, and that might be optimistic.

In the meantime, downsampling HD content to anamorphic SD DVDs works well and looks good on HDTVs.