video lingo questions

ChrisP

ChrisP

Member
First let me say that I have learned so much since the discovery of DVXuser.com

Certain terms I have read, and have still not come to find out what they mean.

Online editing and offline editing? What's the difference? Also everyone refers to HMI's as either they are lucky to have them or wish they did. I think they are some sort of lighting equipment?

One other question that popped in my head. On the bottom of my DVX batteries is a little switch. What does it do? What's it for?

Thanks for all the shared wisdom!
 
switch is for reminding yourself when your battery is dead. If you have several batteries that look alike, this comes in handy.

I'm not sure about offline editing, unless it is not pulling your stuff directly from an "online" source, such as a deck or something.
 
Online editing would be editing with footage at full resolution to create a final product, off line would be working with a lower res version until the edit is near the final stages and then to be onlined, or digitized at full resolution.
HMI's are daylight balanced lighting fixtures. They produce a much higher inttensity light than their tungsten counterparts at the same voltage. Unfortunately they are much more expensive, and more delicate.
The little switch on the batteries is merely a switch for you to use to keep track if the battery is charged or dead.
And by the way do not let any of these folks scare you about the cameras clicking noise when the camera is off.
 
Off line editing is editing with files that aren't at full resolution.

HMI's are indeed lights. They burn at the same temperature that daylight doesand they'e about 4 times more efficient than tungsten instruments.

The switch on the back is for your own use. It doesn't do anything, but you can use as an indication as to whether or not the battery is charged. I think it should be a three position switch, one for "full" one for "partially used" and another for "empty."

EDIT: Damn, I got beat to the punch.
 
I'll take on a couple of these:

Mr.Wrock said:
Online editing and offline editing? What's the difference?
Click to expand...
Online editing is working with full resolution footage, while Offline editing is working at less then full resolution. For example, with FCP I can capture my footage in Photo Jpeg format and edit it offline. This format takes up a lot less room on my hard drive and allows me to work quickly with a lot of footage. It is good for general editing. As soon as I am done with the edit, I can then recapture my footage at full resolution using only the footage in my final edit. Now that I have only what I need at full resolution I can then begin to add effects; color correct and tweak the footage for final delivery. This saves room on the hard drive, if you are limited in space.

Mr.Wrock said:
Also everyone refers to HMI's as either they are lucky to have them or wish they did. I think they are some sort of lighting equipment?
Click to expand...

Yep your right, (Pronounced "Hemi" or "Hemi's") they are lights that you can get in various sizes and are top of the line.
 
Thanks for the quick answers.

So if I'm importing footage from tape to hard drive via firewire and drag that footage to my timeline I'm online editing at full resolution right?
 
Mr. Walters delayed is not denied. Your explaination helped answer my next quest which was whats the benifit of offline editing.

thanks
 
Mr. Wrock-
No problem. And yes, you are editing at full resolution. To capture at a different resolution you have to go in and change you capture settings. I think that just about all NLE's have the default capture settings at full res.
 
Offline editing used to be very popular before harddrive sizes became so large. Now days I would think that most people edit at full resolution. The exception may be with hi-def footage where going back to offline editing may once again become the norm until terabyte drives are cheap.
 
With uncompressed HD that may be necessary, but with DVCPRO-HD and HDV, it certainly shouldn't be necessary. HDV takes up as much space as DV, or less. DVCPRO-HD takes up more, but you still get an hour per 55 gigabytes or so, so a 160-gb drive can hold three hours of footage.

(although, with HDV, if you're transcoding to an edit-ready intermediate codec, it will take up a lot more space than just the raw HDV footage...)

I don't think we'll encounter much of a space issue with HDV or DVCPRO-HD footage. Now, for pushing around that many pixels in rendering, well, there may be some merit to the idea of offlining a DV-res image, then conforming the full 4x to 6x larger HD image...
 
And the reason that no one said what HMI stands for is that no one can ever remember. Hydragyrum Medium arc-length Iodide

Dan
 
Well... you remembered Dan. I remember hearing someone talk about the old arc lights. Man, do those sound like they were a pain in the ass.
 
TC said:
Well... you remembered Dan.
Click to expand...

Nope. I googled. :grin: And even at that, it took some digging to find the actual words.

"Das Hahn-Meitner-Institut (HMI) ist ein naturwissenschaftliches Forschungszentrum."

"We at HMI look forward to the day when our services are no longer necessary; . . ."

"Hjælpemiddelinstituttet er oprettet af amterne samt Københavns og Frederiksberg kommuner."

"The Graduate School for Human-Machine Interaction (HMI) was founded in 1996 with . . ."

"The primary goal of the Helioseismic and Magnetic Imager (HMI) investigation is. . ."

and so forth.

Dan
 
You must log in or register to reply here.
Back
Top