Optical Flow Greyed Out

Hi, I've searched around the internet and nobody seems to have this problem!
I don't know if I'm doing something wrong or if it's a bug but I can't select optical for some reason...
I've slowed a clip down and I can apply frame blending, but I want optical flow!

Does anybody know what might be up?

Thanks for any help

Apparently Optical Flow can't be applied to every type of media... Does this apply to your situation?

discussions.apple.com/thread/4503227?start=0&tstart=0

This one also might assist

www.larryjordan.biz/fcpx-optical-flow/

hmm thanks but I don't think so. It must be a file type issue but first of all there doesn't seem to be any handy information anywhere stating something like 'so and so file type can't be used with optical flow' and secondly my media is ProRes. I'm new to fcp and video in general so I'm probably doing something stupid of course!

I'm making a stop motion film and using quicktime to make image sequences out of my shots. When I export from quicktime I choose ProRes 422, 1920x1080. When I import to fcpx I choose create optimised media and proxy media. Optical flow doesn't work on these clips if I choose optimised or proxy media playback. If nobody else has this problem then it could be something to do with my quicktime export options... but then doesn't fcp transcode into a format it shouldn't proceed to have any trouble with anyway??

Oh I found out why, I really don't know what I'm doing with this program!
I used the blade tool to take away a frame I didn't want from the middle of the clip, to make the clip into one clip again I chose to create a compound clip. It's with compound clips that you can't use optical flow. I'll have to find out how to rejoin cut up clips without making them into compound ones.

Thanks for your help!

aaaand a quick google later it turns out you can't do this..... well that's stupid.. should be a glue tool or something

(sorry for triple post!)

Glue tool! Love it! Yes deleting "through" edits is something that is sadly lacking from FCP X. Just delete everything to the right and drag it out using the trim tool to return to normal programming.

That method would normally be fine but it wont work if the cut was to remove a frame. In this case I accidentally had my hand in shot during a photo for a stop motion sequence, it would be cool if I could cut out that one frame and have fcp deal with the clip as if it had never been there!
Of course I could have just removed it before compiling the photo sequence...

Here is the "Glue workflow":

You have your video clip in the timeline.
Remove the frame(s) that need to go.
Copy the 2 clips either side of the removed frame.
Paste them into a new Project timeline.
Render the project as a ProRes clip - call it Glue 1.
Import the new clip.
Add the Optical flow filter.

Awesome, great idea, thank you!

Glad to help.

Compound Clip?

BenB wrote: Compound Clip?

Optical flow won't work with compound clip you see

simonpwood wrote: Here is the "Glue workflow":

You have your video clip in the timeline.
Remove the frame(s) that need to go.
Copy the 2 clips either side of the removed frame.
Paste them into a new Project timeline.
Render the project as a ProRes clip - call it Glue 1.
Import the new clip.
Add the Optical flow filter.

ooh I just realised something though, you must ensure to stop using proxy media before you export with this glue workflow!

Well yeah; export at the highest quality you can.

I never use proxy for anything myself....

I just realised when exporting from the new 'glue' project to prores final cut was still in proxy mode. When I brought it back to my main project, from which I'm editing using proxy, it was being proxied again!