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Level 1

4 points

Ken Burns effect

Under Snow Leopard 10.6.8 I am using iMovie '11 version 9.0.4 (1634).

Making for the first time a movie out of iPhoto pictures, with lots of effects (transitions, titles, etc.), I experience in the use of the Ken Burns effect that any zooming ('in' as well as 'out'), or panning, constantly generates a kind of 'moiré' artifact: stones, leaves, steps, rooftiles and in general anything that is rather detailed, start to twinkle and flicker. The duration of those scenes varies between 1.14 and 4.00. On extreme shortcuts, this effect is - as seems obvious - rather not seen.

As the use of the Ken Burns effect in my iMovie project is essential, I love to know how to avoid that detoriation. In iMovie itself it is not too ennoying on my 27" iMac monitor. But on TV, with the DVD burned (iDVD version 7.1.2 - 1158), it is really desastrous to watch...

Is upgrading from iMovie to Final Cut a solution?

Thanks for any help.

Posted on Oct 14, 2011 7:21 AM

Best reply

elikness

Level 4

2,640 points

Posted on Oct 17, 2011 8:39 AM

That extremely fine detail you're noticing the moiré pattern on is probably only affected by lowering the contrast of the images. It's kind of like putting a softer focus filter on it in a a way. High contrast, sharpness is not what you want. You can try lowering the contrast by clicking on one of the most egregiously moiré-ing images and hit letter V to bring up the video inspector. Drag the Contrast slider to the left, by 50 and do a test run. I think it might make the moire less noticeable because the edge-effect will be softened, maybe the moiré will be less noticeable too.

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16 replies

Vernonya

Level 1

14 points

Jun 26, 2012 11:01 AM in response to pdrcourious

Absolutely brilliant. Been tearing my hair out here. In fact I opted for the 640 -360 pixel version, and it works absolutely fab on a 32" TV, whereas, before on 1080 there were noise bars . Also worth mentioning I use ticker to explain some of my stills . At the higher resolution these were jerky on a tv, but now they just sail though calmly.

I feel I owe you a pint !

Vern

Ken Burns effect