[Interest] Crash in QMediaPlayer due to missing codec

[maitai]

Thanks for your answers,

Unfortunately I cannot reproduce the issue here, and at the user end the 
problem is now fixed. I don't even know which codec was missing or 
wrong. I was just asking for a way to eventually programmatically avoid 
the crash and prompt the user. Needless to say there are hundreds of 
users with Windows 10 and this is the first time we face this case.

I am aware QT5 is EOL, porting to QT6 is something we need to do.

--Philippe

Le 24-06-2025 22:01, Thiago Macieira a écrit :
> On Tuesday, 24 June 2025 11:54:38 Pacific Daylight Time Axel Spoerl via
> Interest wrote:
>> massive changes and improvements have been made in Qt 6 / QMultiMedia,
>> logging and error handling included. Since Qt 5.15 is EOL, it's maybe 
>> a
>> good time to upgrade to Qt 6.
>> 
>> In your application code, you can use the errorString() methods to 
>> bring
>> backend messages forward. In addition you can set the environment 
>> variable
>> QT_LOGGING_RULES="qt.multimedia.*=true" and inspect the logging 
>> output.
>> 
>> I am not sure for 5.15. But for Qt 6, you'll also get warnings about 
>> missing
>> codecs this way.
> 
> One shouldn't get warnings. There should be a way for the application 
> to
> programmatically get the error condition so it can display to the user.
> 
> However, Philippe hasn't provided enough information for us to know 
> where the
> crash is happening. We need a working Qt 6.8+ application that 
> reproduces the
> problem.
> 
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