https://bugs.kde.org/show_bug.cgi?id=480845

            Bug ID: 480845
           Summary: Rendering of Guide Zone / Guide Multi-Export fails
                    when there is a slash in the guide comment
    Classification: Applications
           Product: kdenlive
           Version: 23.08.2
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Video Display & Export
          Assignee: j...@kdenlive.org
          Reporter: email...@pm.me
  Target Milestone: ---

SUMMARY
***
I tried to export a sequence of clips with guides at the cuts. One of the
guides had a " / " in the guide comment, another one had a slash in between
characters. These two guide zones failed to export with the following message

[consumer avformat] Could not open
'/home/user/projects/project-folder/C-Cam/shooting-date_projectname-{guide /
comment}.mp4'
***


STEPS TO REPRODUCE
1. Create a sequence with guides throughout
2. Make sure one of the guides have a / in the comment
3. Use a Guide Multi-export render

OBSERVED RESULT
The renderer crashes as the file name looks like a path with a folder that does
not exist. Not sure if we would get the same result/error with other forbidden
characters in the guide comment.

EXPECTED RESULT
The render does not crash. As it is a file system/OS specific bug not sure what
the correct way to handle this scenario would be. Perhaps there is a list of
chars that are allowed depending on OS and the guide comments are parsed prior
to file name generation to replace these characters with something else.

SOFTWARE/OS VERSIONS
Operating System: NixOS 23.11
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.113.0
Qt Version: 5.15.12
Kernel Version: 6.1.70-xanmod1 (64-bit)
Graphics Platform: X11
Processors: 8 × AMD Ryzen Embedded V1605B with Radeon Vega Gfx
Memory: 14.6 GiB of RAM
Graphics Processor: AMD Ryzen Embedded V1605B with Radeon Vega Gfx

ADDITIONAL INFORMATION
Was using the flatpak version when first encountering this error but most
likely will be present in nixpkgs version as well as appimage since the error
is most likely due to os/filesystem limitations.

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