[kdenlive] [Bug 507568] New: macOS melt rendering crash at arbitrary frame - EXC_BAD_ACCESS (SIGSEGV)

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https://bugs.kde.org/show_bug.cgi?id=507568

            Bug ID: 507568
           Summary: macOS melt rendering crash at arbitrary frame -
                    EXC_BAD_ACCESS (SIGSEGV)
    Classification: Applications
           Product: kdenlive
      Version First 25.04.4
       Reported In:
          Platform: macOS (DMG)
                OS: macOS
            Status: REPORTED
          Severity: crash
          Priority: NOR
         Component: Rendering & Export
          Assignee: jb at kdenlive.org
          Reporter: rich at racitup.com
  Target Milestone: ---

Created attachment 183574
  --> https://bugs.kde.org/attachment.cgi?id=183574&action=edit
macOS crash log

SUMMARY
kdenlive version 25.04.3
MacOS melt render crash at arbitrary frame number in the same project.
Example below was near the start but have had attempts get >20000 frames in

STEPS TO REPRODUCE
1. The project is 27m19s long, has one main video and audio track and a few
non-animated text titles
2. Renders at 37-46 fps until crash
3. I have another project with videos and audio taken from the exact same
camera and phone, slightly shorter at 15 minutes, renders every time

OBSERVED RESULT
Crashes arbitrarily, crash log attached

EXPECTED RESULT
No crash

SOFTWARE/OS VERSIONS
macOS: 12.7.6

ADDITIONAL INFORMATION
Render log:
Started render process: /Applications/kdenlive.app/Contents/MacOS/melt
-loglevel error -progress2
/private/var/folders/8t/460wy1xj7y1_1ghx0fnk_z0w0000gn/T/kdenlive-tpBwsd-1.mlt
Detected locale "C" with character encoding "US-ASCII", which is not UTF-8. Qt
depends on a UTF-8 locale, and has switched to "UTF-8" instead. If this causes
problems, reconfigure your locale. See the locale(1) manual for more
information.16       492     1
31      983     2
43      1476    3
Rendering of /Users/rich/Documents////Video2-hearing1.mp4 aborted, resulting
video will probably be corrupted.
Frame: 1476

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