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How to use the phonon-vlc-backend in PyQt4 on Windows

I'm helping develop a PyQt4.8 application which amongst other things plays video and audio. We are using Phonon for this, part of the reason being that we also embed videos in a QtWebkit page which uses the same.

On Windows 7, the default phonon backend (phonon_ds94.dll) seems to struggle with some media formats (refusal to play) so we're looking to try the phonon_vlc backend instead.

This page appeared to be the most helpful, but I still haven't had success. I've extracted phonon_vlc.dll and copied it into C:\Python26\Lib\site-packages\PyQt4\plugins\phonon_backend\ . I开发者_运维知识库've installed VLC 1.1.7. I've removed phonon_ds94.

But when I run my app, I just get the error:

WARNING: bool __thiscall Phonon::FactoryPrivate::createBackend(void) phonon backend plugin could not be loaded

I've also tried adding C:\Program Files\VideoLAN\VLC to the %PATH%, but still no joy.

Can anyone offer any suggestions?

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