GStreamer Tutorial 3: Part 2/4 - Streams and splits multimedia using Playbin2

GStreamer Tutorial 3 - 2

# Add elements to our bin
output_bin.add(decode, convert, tee, audio_queue, audio_sink, wavescope_queue,
    wavescope_visual, wavescope_convert, wavescope_sink, file_queue, 
    file_encode, file_sink)

# Link decodebin with autoconvert when its source pad has been created.
decode.connect('new-decoded-pad', on_new_decoded_pad)

# Callback function to link decodebin to autoconvert.
def on_new_decoded_pad(dbin, pad, islast):
    decode = pad.get_parent()
    pipeline = decode.get_parent()
    convert = pipeline.get_by_name('convert')
    decode.link(convert)
    print 'linked!'

# Link the rest of our elements together.
if (not gst.element_link_many(convert, tee) or
    not gst.element_link_many(audio_queue, audio_sink) or
    not gst.element_link_many(wavescope_queue, wavescope_visual, 
        wavescope_convert, wavescope_sink) or
    not gst.element_link_many(file_queue, file_encode, file_sink)):
    print 'Not all elements could link.'