jagged edges on logo after render

What are the dimensions on your logo?
What is it's DPI?
What shape is it? Some shapes just inherently leave jagged edges.

bob

The shape of the logo is round, but it's the text that is jagged? Are they not on the same layer? Or is the text larger than the logo?
I assume you're not doing any resizing, right?
Are you looking at the jaggies on a computer monitor or an NTSC monitor?
Saving the logo as a PNG file should give nice clean edges. I'm not sure what's wrong here, but maybe we can figure it out.

bob

I had the same problem.
Try changing your sequence settings :
-> field dominance = none
-> codec = animation (quality 100% of course)

Rendering and exporting : should be perfect.

Let us know if that is the answer your looking for.

Well... it works BUT, you get back to the pb if you export from QT to another codec. Then, your logo gets durty again, while the whole movie keeps fine... just wired !

Try this.

First, in FCP apply a Gaussian Blur filter to the logo clip, set between 7 and 10. I know it will look bad on the computer screen, but ignore that for now.

Second, set the "Y" (vertical) center position value in the Motion tab of the logo clip to an odd number, and not to zero or an even number. I know this sounds like witchcraft, but sometimes it works to prevent interlacing artifacts in curved line art. Also works with type.

Like I said, may sound crazy but try this combo of fixes and see if your problem goes away. This is a well-documented method stolen from several of the FCP tip sites.

Well, the method you describe may work.
But in what I'm concerned with, this is quite strange :
If i render as an animation, the whole thing is just perfect (just like each image was done in Photoshop), including the logo.
Then I use this "perfect export" by opening it in QT, then exporting it again 100% size in an onother codec (let's say H264, 100% quality), then everything is still 100% perfect BUT the logo which seems to be a bad quality one added later on the whole video.
This problem occurs only on computer screen. Always good on TV. But still a problem when your target export is computer screen.
The logo in question is green. I wonder if ther is some kind of color pb in video. Maybe the background on which is the logo is imported is not "not enought contrasted"... I don't know...

In my experience the issue is almost always related to coming from or going to square progressive pixels into rectangular interlaced pixels.

Nothing to do with color space in my experience.

I've gotten jaggies going from sq. pixel Photoshop graphics into NTSC video that look fine in FCP in a computer but look jagged after render on an analog monitor.

I've also taken type generated in FCP that looks perfect in analog video but has jaggies when I knock it down to a progressive square pixel H.264 movie for viewing on the desktop.

Strange as it sounds, this business of placing the origin of the graphic on an odd-numbered vertical pixel actually seems to work. I first read that in an article that is someplace in Larry Jordan's website. ( http://www.larryjordan.biz )

That and enough gaussian blurring in the interlaced video environment to overcome any jaggies problems with curved shapes drawn in side interlaced video frames.

That's what I know.