[PyQt] Phonon-VLC

Timothy W. Grove tim_grove at sil.org
Sun Sep 11 02:37:21 BST 2011

While I'm experimenting I may have another go at using phonon. How do 
you set the backend to use? just by putting a phonon_backend directory 
in my program's folder?? The important thing for me is the ability to 
send extra commands to the vlc backend such as '--autocrop' or setting 
the playback rate. Can this be done through phonon?

Best regards,

On 09/09/2011 16:06, emmanuel_mayssat at lynceantech.com wrote:
> Just out of curiosity, why don't you use phonon?
> I currently using mplayer and saw that phonon can now display rtsp streams (which I use)
> Is there a reason not to use phonon and go with mplayer/vlc?
> Regards,
> --
> Emmanuel
> On 14:55 Fri 09 Sep     , Timothy W. Grove wrote:
>> Thanks, I'm giving VLC a try and it seems to be working okay. Probably a
>> question for the VLC forums (I'll copy a post there in a minute...), but
>> I don't understand why I can't get autocropping to work. I'm using
>> """self.Instance = vlc.Instance("--no-audio", "--play-and-pause",
>> "--autocrop") """ within my program, and I've tried using the same
>> arguments on the command line but no joy. Should I be adding any other
>> arguments to include this filter? I'm using the precompiled version of
>> vlc.py which came with the Qt bindings; under Windows 7, PyQt4 and
>> Python 3.2.
>> MPlayer was also working well embedded into a QWidget, only the
>> background was destroyed in resizing when paused or stopped as described
>> in my earlier posting below. I attempted also to take screenshots using
>> QPixmap.grabWindow() and .grabWidget() but these only return an empty
>> image. I'd still like to understand this behaviour if anyone has any
>> ideas. Thanks.
>> Best regards,
>> Timothy Grove
>> On 04/09/2011 13:45, Jo Jürgens wrote:
>>> If you can use VLC instead of Mplayer, there are Python/Qt bindings
>>> for it that seem to work fine
>>> http://wiki.videolan.org/Python_bindings
>>> On Sun, Aug 28, 2011 at 4:27 PM, Timothy W. Grove<tim_grove at sil.org
>>> <mailto:tim_grove at sil.org>>  wrote:
>>>      I've been successful in embedding the MPlayer video player into a
>>>      QWidget thanks to the PyMPlayer application
>>>      (http://code.google.com/p/python-mplayer/). Resizing the QWidget
>>>      resizes a movie just fine while the movie is playing, but once a
>>>      movie is paused or stopped, no resizing of the displayed frame
>>>      occurrs and even worse, if the window size is decreased so that it
>>>      covers the movie, that area of the movie frame is erased. I'm
>>>      wondering if someone could suggest what issues 'might' be involved
>>>      here? Thanks for any ideas!
>>>      Best regards,
>>>      Tim
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