Tentacle Sync and Final Cut Pro X Audio Roles

15.21K viewsSoftwareFCPX multicam

After syncing clips with Tentacle Sync Studio, exporting an XML file for Final Cut Pro X, then importing the XML file into Final Cut Pro X, the moment I expand a Multicam clip to assign custom audio roles Final Cut Pro X immediately crashes every time.  As wonderful as it is to have perfectly synced multicam clips Roles are an integral part of working with Final Cut Pro X, and if we are unable to assign Roles this is a serious drawback.  I have assigned custom Roles, both audio and video, to thousands of clips in multicam containers that were created by either Plural Eyes or Final Cut Pro X directly and never had this issue.  Again, with Tentacle Sync clips the app crashes immediately.  What steps do you recommend to avoid this?

UPDATE: Any time I try to do ANYTHING to a clip inside a multicam clip created with Tentacle Sync FCP X crashes.  As well as the above making a single change to color also causes an immediate crash.  Why are the multicam clips created with Tentacle Sync so unstable?


We used a Sony FS7 (MXF files) and a Panasonic GH5 (8-bit H.264 files); no external audio recorder.  Everything was 3840×2160 @ 23.98fps.  In post we are running macOS Sierra 10.12.4 and Final Cut Pro X 10.3.3, so FCPX XML version 1.6 was used.  Tentacle Sync correctly synced all of the material.  However, in FCP X once you open a multicam clip to assign an audio or video Role, or make any change to the Color Board, FCP X immediately crashes.  We have edited many Multicam projects with the same MacOS and version of FCP X without this issue, it was only after introducing the Tentacle Sync XML file that it appeared.  I think Tentacle Sync is an amazing system and am otherwise extremely happy with it, but this new issue has caused some problems.  Unfortunately I cannot provide any screenshots for this project as it involves confidential client footage.

UPDATE: I just created a multicam clip in FCP X with the same footage and changing Role assignments and performing color corrections does not make the app crash, which leads me to believe something is happening with the multicam clip that is created with Tentacle Sync Studio.

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