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Activity Forums Apple Final Cut Pro Optical Flow hanging machine

  • Optical Flow hanging machine

    Posted by Tom Sefton on August 31, 2018 at 1:15 pm

    Hi, 10 min short documentary project. Shot on Red Epic Dragon and Epic-W in 6 and 8k. Edited with proxies. Also on timeline is a mix of Sony A7SII footage and some DJI drone. Some of the drone footage has optical flow when the clip has been retimed.

    Switching from proxy to original files for master export. Hit export to ProRes. Dialogue box indicates that optical flow hasn’t been analysed yet, but when the project is open, there are no background tasks trying to run. Either waiting for optical flow to analyse, or ignoring and hitting export just results in system hang. I’ve left the system for hours to analyse and nothing progresses past 0%. If I hit export, nothing progresses past 0%. Totally stuck and deadline looming.

    Co-owner at Pollen Studio
    http://www.pollenstudio.co.uk

    Eric Santiago replied 7 years, 10 months ago 3 Members · 24 Replies
  • 24 Replies
  • Jeremy Garchow

    August 31, 2018 at 2:53 pm

    First, trash prefs and see if that works.

    Next delete the analyzation file to see if that works.

    Next delete cache to see if that works (you can do this on a sequence or event level so you don’t have to trash all of it).

    If that doesn’t work:

    Try taking that clip offline (find the alias in the library and delete it).

    Or reimport the clip and add back to timeline.

  • Tom Sefton

    September 4, 2018 at 10:19 am

    Tried all of this. Nothing works. Totally stuck and having to export master encodes from proxy files rather than the original red raw files. Seems that optical flow is not working at all, as even switching it on to one piece of DJI footage that didn’t have it before is grinding the machine to a halt. So frustrating.

    Co-owner at Pollen Studio
    http://www.pollenstudio.co.uk

  • Jeremy Garchow

    September 4, 2018 at 12:04 pm

    If you bring that clip in to a fresh library, does that work?

  • Tom Sefton

    September 4, 2018 at 12:28 pm

    I’ll try!

    Co-owner at Pollen Studio
    http://www.pollenstudio.co.uk

  • Tom Sefton

    September 5, 2018 at 9:48 am

    Still no – but weirdly, if I highlight a clip in the main browser window and go to relink, the relink tool can’t see any clips?

    Might need to do a fresh install of FCPX.

    Co-owner at Pollen Studio
    http://www.pollenstudio.co.uk

  • Jeremy Garchow

    September 5, 2018 at 11:17 am

    That would be a good idea. Definitely some strange happenings going on.

  • Tom Sefton

    September 12, 2018 at 4:21 pm

    This seems to be a pretty serious bug. I’m having constant crashes when I try and export from the raw timeline, and even though the optical flow effects are only found on DJI footage, exporting from the red raw project not the proxies is totally impossible. I’ve tried trashing everything, deleting render files, deleting cache, duplicating projects, re-installing and nothing has worked. Either the project has become totally corrupted by having optical flow added, or there is a bug when working with ultra high resolution timelines because I am totally stuck. I’m having to rebuild the whole project inside Resolve – thank god for resolve here, because FCPX has left me stuck with only a proxy project able to export from. Never experienced it before, but never really had to work with optical flow in high resolution much before.

    Any more ideas at all?

    Co-owner at Pollen Studio
    http://www.pollenstudio.co.uk

  • Jeremy Garchow

    September 12, 2018 at 7:33 pm

    Have you hit Red up about this?

    I recently completed a project in 8k with no issues, but I did notice the Red Apple software didn’t support FCPX over 6k or something like that.

    But I crossed my finger and it worked.

  • Eric Santiago

    September 13, 2018 at 4:56 am

    I have a similar issue where optical flow analysis is persistent even after deleting it from Library.
    Eight clips that are not RED files too.
    I checked all eight clips and it’s not using Optical Flow as the engine.
    When I open FCPX the task sits there taunting me and I have to shut it off.
    I’ve copied and consolidated this project twice to see if it sheds it and still no go ☹
    I can live with it and def will never inherit a project like this again 😛

  • Jeremy Garchow

    September 13, 2018 at 12:00 pm

    Hmm.

    So there’s analysis happening when there is not a need for it to analyze?

    Are there analysis files in the cache?

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