Playing https source in QMediaPlayer on Windows

pbouda

Hi,
I am trying to use the QMediaPlayer to play an mp3 from a https source. Everything works fine on Linux and Mac, but on Windows it just doesn't work (while http works). The certificate is signed and I can access the https server via normal requests from a QNetworkAccessManager without problems. I traced the problem down to the SourceResolver in the wmf plugin. The call to m_sourceResolver->EndCreateObjectFromURL() in resourceresolver.cpp -> Invoke() returns OK (0) with http files, but some error code (-2147012721) with https. I have no idea how to go on from here. Does anybody has an idea how to debug from here on? Anybody with the same problem?

JKSH

Hi @pbouda,

To use the HTTPS protocol, you need to install OpenSSL.

pbouda

@JKSH Yes, that's what I did, and SSL access works fine in Qt via the NetworkAccessManager, if I just send GETs and POSTs. But not if I try to load a mp3 in the WMF plugin, for some reason...

pbouda

OK, I found out why it doesn't work. My mp3 files are stored on a https server that requires login. On Linux and Mac URLs of the form

https://user:password@domain.com/file.mp3

are supported. Those are the URLs that I use. On Windows, the wmf backend does not support those URLs, I would have to use an IMFNetCredentialManager:

https://msdn.microsoft.com/en-us/library/windows/desktop/aa473824(v=vs.85).aspx

That seems difficult to add from the application side, probably this should be a functionality of the QtMultimedia module...? I will try to find some workaround for now, I guess.

JKSH

@pbouda, good find.

Would you be willing to submit a feature request to https://bugreports.qt.io/ ? Perhaps others need this feature like you.

pbouda

@JKSH good idea, I already submitted:

https://bugreports.qt.io/browse/QTBUG-45363