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removal of moire/flicker effect
Hello to all,
We are working on a project using quite a lot of still photos. They are high resolution photos (1600ppi) but have lots of detail and horizontal lines so when plaied they make a moire/flicker effect. We have tried using 10 FCP deflicker filters but still are not satisfied. What can we do? get a filter? we don
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8 Replies
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But you *should* use blur! Don’t use a gaussian blur, though. Use Motion Blur in Photoshop, or its equivalent in AE (Directional Blur?) and set it at 90 degrees, vertical only, 1 to 2 pixels. It’s the only way to do it.
Ed -
I agree – use a blur on your source psd file before you scale it to TV size – you will see great results….
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Thanks a lot Ed and Paul, we will try that and see how it goes.
moztu
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You might also want to try the blend fields filter, you can download it free from… http://www.mattias.nu/plugins
Bob Auiler
bob.auiler@mvpcollaborative.com -
hey,
i’m the author of that filter. any field processing filters have to be applied *after* any scaling and moving around has been done, which is not the order in which fcp normally renders effects. what you need to do is nest your clip with all the motion appled and apply “blend fields” or “reduce interlace flicker” to the nest. the reason a vertical blur works to apply even before motion is because it acts as a more agressive low pass filter, removing any vertical frequencies that might cause flicker and moir
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thanks a lot Bob and Matt also. We might use that filter in the future since the above solution has helped for this particular project.
moztu
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I found my still images looking a lot better if I REDUCED the resolution. You say they are “high resolution photos (1600ppi)”. I brought my “high resolution” images down close to 72 pixels/inch and they appeared a lot sharper. I didn’t even have to add blur to them when I did my moves.
David
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Bella EZ Keyboard -
for sure. that’s because fcp doesn’t low pass filter when scaling down. scale down in photoshop or similar to just a little bit more than you need for the absolute best results. or use the gaussian blur filter until it shows and then bring it back some. pretty much the same effect.
/matt
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