[gst-devel] Visualization with Python

[Stefan Kost]

Timo schrieb:
> Hey Eric,
> Thanks for your answer, but I know near to nothing about C, so it's a 
> bit hard for me.
> 
> I think I didn't make myself that clear. I don't want to know when the 
> music stops or changes song. But the actual changes in the music (pitch, 
> frequency, etc.), just like a visualizer. But instead of changing colors 
> according to the music, I want to execute commands according to the music.
> And all of this in Python.

The documentation for the level-element documenta the message and how to use it.

Stefan

> 
> Thanks,
> 
> Timo
> 
> 
> Eric Zhang schreef:
>> Hi, Timo:
>>
>>     If you don't mind trying playbin2, I know that it will emit signal 
>> `about-to-finish' while changing the playing stuffs to next. You can 
>> connect this signal and do works you want. Playbin hasn't this signal 
>> yet. Refer to <gst-plugin-base>/gst/playback/gstplaybin2.c for more 
>> details.
>>
>> Eric
>>
>> 2008/9/7 Timo <timovwb at gmail.com <mailto:timovwb at gmail.com>>
>>
>>     Hello, I'm looking for a way to execute commands when music changes.
>>     Like visualizations in music players, but instead of changing weird
>>     lines on the screen, I want to do things.
>>     Now I found out about playbin, but I can't get this to work, and can't
>>     find that much documentation about the subject with Python.
>>     This is a bit that I could figure out, but can't get any further:
>>     pipeline = gst.element_factory_make('playbin', 'playbin')
>>     vis = gst.element_factory_make("goom")
>>     pipeline.set_property('vis-plugin', vis)
>>
>>
>>     And if this is possible, can this also be done without writing a
>>     plugin
>>     for a music player? But just use my own program and use the
>>     soundcard or
>>     something to hear the sounds? This way I don't have to write a plugin
>>     for a couple of players but just use my own GUI.
>>
>>
>>     Thanks in advance,
>>
>>     Timo
>>
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