Best practice for computer video - de-interlace or not

I know that there is a lot of discussion on this forum pertaining to interlacing, but after a search I was unable to answer my question(shocking, I know).
I produce distance education classes for a small university. The bulk of our footage is shot on DVCAM or digitized from S-VHS or even 3/4" U-Matic! All of it is captured in NTSC-DV. We output in two formats enhanced DVD (ala e-DVD) and .flv (through Cleaner). My question is this: the majority of our students are going to be viewing these videos on their computers. Is there anything special that we should be doing with the footage in terms of de-interlacing? And if we should de-interlace what settings should we use? And will de-interlacing adversly effect our few students that watch the DVD videos on a set top player?
Thanks in advance for your help and please accept my apologies if I have missed a previous post addressing this question.
BTW, we are using FCS with all softare up to date.
2 - PowerMac G5 2.0Ghz DP Mac OS X (10.4.4) 1- Mac Mini

The answer, I would say, is "it depends". Simple de-interlace throws away half the vertical resolution and doubles up each scanline. Smart de-interlace - like Nattress film effects (60i->30p) - blends the "comb" effect that can happen when viewing interlace material in a progressive (computer monitor) display to leave it looking like motion blur.
You need to look at the material and see if it is problematic when viewed on a progressive display/computer monitor. This would likely be high contrast movement (a bright object moving against a dark background). If the material doesn't look bad, there's no need to go thru the extra processing required to de-interlace. Watching material with smart de-interlacing on an interlace display shouldn't be too bad...
Patrick

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Best Practice for Showing Videos in a Windows Application

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Hi bcp1978,
>>I was wondering where I could find some guidelines, best practices or examples about the how best to do this from a design stand point, so that app is in line with the Windows Application guidelines
To design a windows app, we need to understand Microsoft design principles first:
https://msdn.microsoft.com/library/windows/apps/hh781237.aspx Use these principles as you plan your app, and let them guide your design and development choices
Microsoft also provide a page of design guideline:
https://dev.windows.com/en-us/design
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Hi
I'd like to know your thoughts on what the most proffessional / effeciant method for editing are. At the moment, I archive all the footage from a DV tape through iMovie (I just find iMovie easier for doing this) save / archive all the imported segments of clips I need, name them, then import them into FCP
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Just saw this topic.
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My company is currently evaluating Adobe Presenter to
possibly move our training efforts towards Adobe Flash technology.
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http://training.dmsi.com/test2/
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software is recommended? In my tests either the image is distorted
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throughout the video playback.
Any help/advice is greatly appreciated.
--Tom

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jasonjantzen wrote:
Ha, typical. No repsonse. Where's Durin when you need him?
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Hello,
nice to get feedback.
I've been looking at a few resources on this issue from my last post. In my application I have been using the Observer and Observable classes to implement the MVC pattern suggested by T.PD.(...)
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-If an Observer is observing multiple Observables, it will have to determine which Observer called its update() method (by using reference equality or class comparison or whatever). Again, a very minor issue, but something to keep in mind.I don't deem those issues are minor. The second one in particular, is rather annoying in terms of maintenance ("Err, remind me, which widget is calling this "update()" method?").
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The contrasting appraoches are discussed in this article from Bill Venners: The Event Generator Idiom (http://www.artima.com/designtechniques/eventgenP.html).
N.B.: this article is from a previous-millenary series of "Design Techniques" articles that I found very useful when I learned OO design (GUI or not).
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- expensive or long-running computation in the update methods. That's unrelated to the notification model itself.
- a lot of non-GUI components that use the Observer/Observable to communicate among themselves - all the more risk then, to have a GUI update() called outside the EDT, see remark above.
(or whether there are inbuilt equivalents for Swing components)See discussion above.
As far as your remark 2 goes (if one observer observes more than one subjects, the update() method contains branching logic) : this also occurs with the Event Delegation model indeed: for example, it is quite common that people complain that their actionPerformed() method becomes unwieldy when the same class listens for several JButtons.
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Best regards.
J.
Edited by: jduprez on May 9, 2011 10:10 AM

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What is the best format for HDV video for a computer playback

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Chris Walsh1 wrote:
Why are you using FCP 6.02? Why didn't you do the update to 6.04?? I did, and I am having tons of issues
That is pretty much the reason. It is fresh out the gate and so far untested. I am not an early adopter of any new technology (soft or hardware wise). I like to wait it out and see what other peoples' experience is. A bit of a prickish way to put it is: "In Chess, the pawns go first." (I'm a big Chess nerd -- I have Chess analogies for just about everything).
But even if the latest FCP, OS X and QT versions were humming along without any reported issues by the "power users" (by that I mean people who are editing on their systems 40+ hours a week in a professional capacity) I still wouldn't have upgraded because I am in the middle of three projects.
Well, that isn't entirely the truth. I started all three projects on a PowerMac G4 running OS X 10.4.11 and FCP 5.1.4. In the midst of this I started an across-the-board upgrade -- new computer, monitor, OS and FCS. But what I did (am still doing) is migrating from one to another and testing the performance on the new one before committing. In doing my research before hand, I see that the magic cocktail for stability appears to be OS X 10.5.2, FCP 6.0.2 and QT 7.4.5 so I built my new MacPro to that and stayed there. I have migrated all my current projects to the new system and have been putting the new setup to the test and is passing at every turn, so I feel confident I can work on this new system and will be retiring the PowerMac soon, but throughout this process I always had my stable G4 setup available so I wouldn't risk losing any work.
Might the reason the video you compressed "looked great" be because you didn't do the update?
Maybe, but I can't say with any certainty.
In the old compressor, I had no problems (in earlier versions of my project) compressing the video. It always looked GREAT! In 3.03, I get weird issues that don't make sense to me at all.
In the older version of compressor, this never happened. Even on this project.
Then I would think the update is the likely culprit.
Here is what I would like to try as my final attempt. I just bought yet ANOTHER computer. A Mac Pro/Two 2.8GHz Quad-Core Intel Xeo. I'd like to try to load Final Cut Studio on this machine, but where should I stop my upgrading? What is good stable working system for everyone??
OS X 10.5.2, FCP 6.0.2 and QT 7.4.5 is working great for me, and it appears for others here as well. I am running a new octo-2.8GHz Mac Pro.

Best practice for computer video - de-interlace or not

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