VLC and Python troubles! Help!

[middo]

Hello, I had no idea where to post this since there are no other scripting related sections except the explicitly Lua one and the explicitly browser plugin one.

In case you didn't know, VLC has pretty decent python support, a python/c interface is generated off the headers using ctypes which allows us to call/receive data pretty directly from the actual libvlc itself! Cool!

What I have no clue how to do is to make something very simple work:

I'm working on a script that lets me start an instance of vlc streaming my audio in from a specific sound card, through udp, to another computer over the internet. Currently we do it by hand through the UI and it's getting unreliable with the less techy-employees, so I opted to set up a script that turns on the stream on both end for X amount of minutes or hours then turns it back off. Logistics aside, I have hit a wall in my understanding of how this all works.

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import vlc import sys if __name__ == "__main__": if sys.argv[1] == 'in' or sys.argv[1] == 'out': instance=vlc.Instance() media = 0; if sys.argv[1] == 'out': media=instance.media_new('dshow://','show-vdev=none','dshow-adev=Cirrus Logic HD Audio','dshow-caching=200', 'sout=#duplicate{dst=udp{dst=192.168.2.99:1234},dst=display}', 'no-sout-rtp-sap', 'no-sout-standard-sap', 'sout-keep') #todo: set up the receiving end, 'in' player=instance.media_player_new() player.set_media(media) player.play() print 'Streaming...' while True: pass

The important line is :

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media=instance.media_new('dshow://','show-vdev=none','dshow-adev=Cirrus Logic HD Audio','dshow-caching=200', 'sout=#duplicate{dst=udp{dst=192.168.2.99:1234},dst=display}', 'no-sout-rtp-sap', 'no-sout-standard-sap', 'sout-keep')

Here's my script. It's really basic, it sets up playback instance and creates media with some options. Except that it seems to ignore the options and just use the defaults for dshow:// (ie: playing back the webcam input and audio, when it shouldnt be showing me any video and just playback & stream the audio).

I don't know if I'm doing this right, but here's what the generated interface has to say about the creation of new media:

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def media_new(self, mrl, *options): """Create an empty Media Player object Options can be specified as supplementary string parameters, e.g. m=i.media_new('foo.avi', 'sub-filter=marq{marquee=Hello}', 'vout-filter=invert') """ m=libvlc_media_new_location(self, mrl) for o in options: libvlc_media_add_option(m, o) return m

So to summarize: the line of code that creates the media player doesn't seem to be eating my options, or I'm doing it all wrong. Please advise.

I'm aware that there's not a huge community surround python support here so maybe I'm missing something.

[OlivierAubert]

Hello

The media option setting code you mention actually works. You can try the simple example mentioned in the docstring:

i = vlc.Instance()
p = i.media_player_new()
m=i.media_new('foo.avi', 'sub-filter=marq{marquee=Hello}')
p.set_media(m)
p.play()

or the shorter and more pythonic equivalent:

p = vlc.MediaPlayer()
p.set_mrl('foo.avi', 'sub-filter=marq{marquee=Hello}')
p.play()

and you should see the marquee string displayed. In this case, you will have to look somewhere else (and maybe not even in the python code itself) for the error.

[cen]

Hello,
the command line option works
vlc foo.avi --sub-filter=marq{marquee=Hello}
but the two short examples doesn't.

Do you have any idea?
I'm using
2.2.0-git Weatherwax
vlc.py build_date = "Tue Jul 2 10:35:53 2013"

[OlivierAubert]

See https://forum.videolan.org/viewtopic.ph ... on#p354390 : since 2012 and some pipeline changes, the marquee filter cannot be set on invidual media items, it has to be set on the whole VLC instance.

[hakao]

Is there any one makes this stream running?