audiomixer: Sometimes negotiation failure
Submitted by Seungha Yang
Link to original bug (#796454)
Description
Although there are audioconvert and audioresample before audiomixer, the caps
nego. is failed sometimes (not always)
gst-launch-1.0 audiotestsrc ! audio/x-raw,channels=2,rate=44100,format=S16BE ! audioconvert ! audioresample ! audioconvert ! audiomixer name=mix ! fakesink audiotestsrc ! audio/x-raw,channels=4,rate=22050,format=S8 ! audioconvert ! audioresample ! audioconvert ! mix.