compression yields artifacts

[Chris Blair]

By conforming I mean choosing a format, frame rate, aspect ration and interlacing method that matches on all the footage. As Jeff pointed out, Final Cut is only so-so at taking different types of footage and conforming it to a timeline’s specifications (what you set when you start a timeline).

So even if your different footage is on separate timelines….those timelines would need to match your source footage specs….so each timeline would have different specs. When you go out to a DVD, you’re going to be sending your DVD different formats, aspect ratios, frame-rates etc, which is STILL going to create problems upon playback, because I don’t believe you can mix formats within one DVD menu structure. You can have a widescreen menu choice with everything widescreen, or you can have a 4:3 menu choice with all 4:3 material, but I don’t believe you can mix them within the same set of menus (could be wrong on that).

Anyway…as Jeff suggests, your problem could ALSO be that something is messed up in the original digital files….most likely field order. But if it looks ok playing back in your timeline, then that’s less likely the problem. So identifying what the problem is first is important.

Chris Blair
Magnetic Image, Inc.
Evansville, IN
http://www.videomi.com
Read our blog http://www.videomi.com/blog

[Dorit Grunberger]

Hi Jeff

So sorry for the delay in response. Running around like the proverbial chicken…
I’ll respond by number:
1. You are correct regarding the QT movies. I inherited the files. I must say though, they have given no problem at all in this project.
2. Each of these file formats was put on its own timeline with corresponding sequence settings to fit them. I then exported uncompressed, QT movies as self contained. Each was compressed separately, the different frame rates were never mixed on the same timeline, so I’m finding it hard to understand why there would be any impact of one on the other.
3. I didn’t blow up the footage, the project is a Tai C’hi philosophy and demonstration video, so it isn’t critical that each segment look the same. Again, this footage was on its own timeline exclusively.
4. I like your test idea. I’m very busy right now (preparing a trip abroad to care for ailing mom), so please be patient with me as I may not be able to address these issues until I get back.

I can’t tell you how much I appreciate your time spent on this Jeff, so thanks again and I’ll be back!

Dorit

Thanks in advance,
Dorit

[Jeff Greenberg]

[dorit grunberger] “I’m very busy right now (preparing a trip abroad to care for ailing mom), so please be patient with me as I may not be able to address these issues until I get back.”

First, I’m sorry about your mom. Have the same issues on this end. Take your time, I’m in no rush; and I’ll say the same; be patient; it’s hard to troubleshoot via only words.

Best,

Jeff G

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