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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>You use the wrong
audiosink:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>audio_sink =
Gst.ElementFactory.make('autovideosink', 'audio_sink') </span></font><font
size=2 color=navy face=Wingdings><span lang=EN-GB style='font-size:10.0pt;
font-family:Wingdings;color:navy'>à</span></font><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'> autoaudiosink?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Bernhard<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
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<p class=MsoNormal><b><font size=2 color=black face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;color:windowtext;font-weight:bold'>Von:</span></font></b><font
size=2 color=black face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma;
color:windowtext'> gstreamer-devel
[mailto:gstreamer-devel-bounces@lists.freedesktop.org] <b><span
style='font-weight:bold'>Im Auftrag von </span></b>Jonathan Baecker<br>
<b><span style='font-weight:bold'>Gesendet:</span></b> Mittwoch, 26. Dezember
2018 13:22<br>
<b><span style='font-weight:bold'>An:</span></b>
gstreamer-devel@lists.freedesktop.org<br>
<b><span style='font-weight:bold'>Betreff:</span></b> GStreamer (1.14) Pipeline
in Python3</span></font><font color=black><span style='color:windowtext'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 color=black face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt'>Hello,<o:p></o:p></span></font></p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt'>I
try to understand the way Python and gstreamer works together. I'm able to
build a pipeline for only video and that plays just fine, but when I add audio
my pipeline stops by the first frame and put this to screen.<o:p></o:p></span></font></p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt'>Can
you tell me, what is wrong with my code here?:<o:p></o:p></span></font></p>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'>
<p><font size=2 color=black face="Times New Roman"><span style='font-size:10.0pt'>#!/usr/bin/env
python3<br>
<br>
import gi<br>
gi.require_version('Gst', '1.0')<br>
gi.require_version('GLib', '2.0')<br>
from gi.repository import GLib, Gst<br>
<br>
# mode debugging infos<br>
Gst.debug_set_active(True)<br>
Gst.debug_set_default_threshold(3)<br>
<br>
<br>
# callback link pads<br>
def on_new_decoded_pad(dbin, pad):<br>
type = pad.query_caps(None).to_string()<br>
decode = pad.get_parent()<br>
pipeline = decode.get_parent()<br>
<br>
if type.startswith("video"):<br>
video_queue =
pipeline.get_by_name("video_queue")<br>
decode.link(video_queue)<br>
print("linked video")<br>
if type.startswith("audio"):<br>
audio_queue =
pipeline.get_by_name("audio_queue")<br>
decode.link(audio_queue)<br>
print("linked audio")<br>
<br>
<br>
def main():<br>
Gst.init(None)<br>
<br>
# create new pipeline<br>
pipe = Gst.Pipeline.new('pipleline')<br>
<br>
# add source and decoder<br>
src = Gst.ElementFactory.make('filesrc', "src")<br>
decode = Gst.ElementFactory.make('decodebin', 'decode')<br>
<br>
# video queue and sink<br>
video_queue = Gst.ElementFactory.make('queue',
'video_queue')<br>
video_sink = Gst.ElementFactory.make('autovideosink',
'video_sink')<br>
<br>
# audio queue and sink<br>
audio_queue = Gst.ElementFactory.make('queue',
'audio_queue')<br>
audio_convert = Gst.ElementFactory.make('audioconvert',
'audio_convert')<br>
audio_sink = Gst.ElementFactory.make('autovideosink',
'audio_sink')<br>
<br>
# set some properties<br>
src.set_property('location', 'test.mp4')<br>
video_sink.set_property('sync', 'true')<br>
audio_sink.set_property('sync', 'true')<br>
<br>
# create pipeline<br>
pipe.add(src)<br>
pipe.add(decode)<br>
pipe.add(video_queue)<br>
pipe.add(video_sink)<br>
pipe.add(audio_queue)<br>
pipe.add(audio_convert)<br>
pipe.add(audio_sink)<br>
<br>
# link elements<br>
src.link(decode)<br>
video_queue.link(video_sink)<br>
audio_queue.link(audio_convert)<br>
audio_convert.link(audio_sink)<br>
<br>
# link decoder to coresponding queue<br>
decode.connect('pad-added', on_new_decoded_pad)<br>
<br>
loop = GLib.MainLoop()<br>
<br>
# start pipeline in play mode<br>
pipe.set_state(Gst.State.PLAYING)<br>
loop.run()<br>
<br>
# cleanup<br>
pipe.set_state(Gst.State.NULL)<br>
<br>
<br>
if __name__ == '__main__':<br>
main()</span></font><o:p></o:p></p>
</blockquote>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt'>I
hope it is ok, to post so much code here, when not I can post next time a gist
link.<o:p></o:p></span></font></p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt'>Regards<o:p></o:p></span></font></p>
<p><font size=3 color=black face="Times New Roman"><span style='font-size:12.0pt'>Jonathan<o:p></o:p></span></font></p>
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