Sharpener in FCPX

I use several different sharpeners inFCPX, the original plus some plug ins.
All of them, at times, will change the duration of the clip I apply it to.
Does anyone know why, and more importantly, how to prevent it?

I have not had that experience, although I have only used the sharpening effect that's native to FCPX.

Tom

I've used the native and a few third party sharpen plugins, but never experienced one changing the duration of a clip.

geraldlewis wrote: … sharpeners inFCPX, the original plus some plug ins.
All of them, at times, will change the duration of the clip I apply it to.…

FCPX' own Sharpener effect contains nothing which could affect the duration of a clip…

Can you share a screenshot of your timeline, where you apply the effect to?

There is not anything to share really.
It is the simplest of training videos - f our clips, no nat sound, just a VO.
Dissolves between the clips.
The only thing is the raw video is 1080P and I am cutting on a 720P timeline.
It doesn't happen all the time - I have about 85 videos to cut this way, I am into #30.
It has happened on maybe 4 of the ones I have edited.
I have tried applying sharpening before and after colour correction - no difference.
I have made it a compound clip and then applied - the same thing!

I emailed FCPEffects (one of the plugins I have). They were able to duplicate it, but have no idea why its happening.

it's because the sharpening contracts the images, so the clip will be shorter

Stu Wart wrote: it's because the sharpening contracts the images, so the clip will be shorter

Really, how exactly is anything "contracted" duration-wise by sharpening?

FCPX.guru wrote:

Stu Wart wrote: it's because the sharpening contracts the images, so the clip will be shorter

Really, how exactly is anything "contracted" duration-wise by sharpening?

HAHAHA did you really think I was serious ? JOKE ! dear Guru , namaste

Joking aside, this is a problem for me!
4-second clips become 6-second clips when sharpened.
Replacing the video make no difference. Turning the timeline into a compound clip and then sharpening doesn't help either.
Frustrating!

I'm throwing the Sharpen filter on clips, and I'm not seeing anything expand. Can you give us before and after screen shots?

geraldlewis wrote: Joking aside, this is a problem for me!
4-second clips become 6-second clips when sharpened.…

No doubt it is.
But as mentioned above and before: show us your timeline and the inspector of that clip …
because, as said - when you open the Sharpen effect in Motion, there's absolutely zero which could affect the timing.
Even contrary: rule #1 in FCPX is "A second is a second" - e.g. one can mischmasch all sorts of fps's - FCPX does a perfect job keeping the beat. Just manipulating pixels has no effect on timing. You have to do intentionally some clicks to re-time.

sooo, show us your screen …

And just to exclude the obvious - apologies for asking silly questions:
we speak of Effects/Sharpen, which comes in the Inspector with a single slider, preset to '2.5' … ?

1080 to 720 plus sharpening ? you say ?

Are you on High Sierra ? or not ? First thing to know
the amount of bugs generated by the OS is growing every update

I am aware of some of the bugs in the new OS, this is why I am still on El Captian.