[kdenlive] [Bug 493529] New: DaSIM and Nano motion tracker not working - uncaught OpenCV exception / invalud OpenCV build?

[Schlomo Schapiro]

https://bugs.kde.org/show_bug.cgi?id=493529

            Bug ID: 493529
           Summary: DaSIM and Nano motion tracker not working - uncaught
                    OpenCV exception / invalud OpenCV build?
    Classification: Applications
           Product: kdenlive
           Version: git-master
          Platform: macOS (DMG)
                OS: macOS
            Status: REPORTED
          Severity: critical
          Priority: NOR
         Component: Effects & Transitions
          Assignee: jb at kdenlive.org
          Reporter: schlomo at schapiro.org
  Target Milestone: ---

Created attachment 173986
  --> https://bugs.kde.org/attachment.cgi?id=173986&action=edit
screenshot of error

SUMMARY

Cannot use OpenCV motion trackers, "Analyse effect" fails with a "failed to
filter source" error:

Current Frame: 1, percentage: libc++abi: terminating due to uncaught exception
of type cv::Exception: OpenCV(4.9.0) /Users/gitlab/ws/builds/
GZwHuM5x/0/sysadmin/ci-management/macos-arm-
clang/build/libs/opencv/opencv/work/opencv-4.9.0/
modules/dnn/src/onnx/onnx_importer.cpp:4097: error: (-2:Unspecified error)
DNN/ONNX: Build OpenCV with Protobuf to import ONNX models in function
'readNetFromONNX'

STEPS TO REPRODUCE
1. install Kdeenlive
2. put OpenCV motion tracking modules into ~/Library/Application\
Support/kdenlive/opencvmodels/
3. load sample video, I used
https://www.pexels.com/de-de/video/eine-gruppe-von-jungen-die-eine-musikalische-nummer-auf-der-buhne-spielen-2941132/
4. add Motion Tracker effect, mark a face, select DaSIM and click on "Analyze"

OBSERVED RESULT

error (see screenshot)

EXPECTED RESULT

Motion tracking with OpenCV models

SOFTWARE/OS VERSIONS
Mac OS 14.5 on M3 arm64
Kdenlive Version 24.11.70 (git master) from official DMG
Same problem observed also with 24.08.01 and 24.05.02 installed via DMG from
official download

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