GUI freezes on Ubuntu 20.04 when trying to play

[Dereck Wonnacott]

I select a device, then select a file, and it appears to load the file (thumbnail appears) and complete the 'transcode'. I then click play and the UI freezes with the console message 'Failed to Connect'.

I have multiple chromecast ultras, and one original. I am able to cast from this computer with chrome and VLC, FWIW.

$ gnomecast
	pid 38995 is dead, so deleting /tmp/gnomecast_pid38995_thumbnail_emnbw6yr.jpg
	pid 38995 is dead, so deleting /var/tmp/gnomecast_pid38995_transcode_whg25757.mp4
update_button_visible
None
update_button_visible
update_button_visible
serving on http://192.168.86.30:33487
check_ffmpeg
b'/usr/bin/ffmpeg\n'
None
update_button_visible
update_button_visible
192.168.86.30 - - [25/Sep/2021:21:46:57 -0400] "GET / HTTP/1.1" 404 725 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36"
192.168.86.30 - - [25/Sep/2021:21:46:57 -0400] "GET /favicon.ico HTTP/1.1" 404 747 "http://192.168.86.30:33487/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36"
Chromecast('record[a,in-unique,08ea3a5c-0c0e-3809-a853-58b32a4e3605.local.]=120/119,192.168.86.120', port=8009, device=DeviceStatus(friendly_name='Living Room TV', model_name='Chromecast Ultra', manufacturer=None, uuid=UUID('08ea3a5c-0c0e-3809-a853-58b32a4e3605'), cast_type='cast'))
update_button_visible
update_button_visible
update_button_visible
Open clicked
File selected: ['/home/dereck/Videos/Peek 2020-11-20 18-57.mp4']
update_button_visible
STOP command requested but no session is active.
STOP command requested but no session is active.
update_button_visible
update_button_visible
update_button_visible
FileMetadata(fn:/home/dereck/Videos/Peek 2020-11-20 18-57.mp4, ready:True, thumbnail_fn:/tmp/gnomecast_pid39666_thumbnail_tb602mjn.jpg, container:mp4, video_streams:[StreamMetadata(index:0:0, codec:h264, title:und)], audio_streams:[], subtitles:[])
Transcoder /home/dereck/Videos/Peek 2020-11-20 18-57.mp4
transcode, transcode_video, transcode_audio True False True
ffmpeg -i '/home/dereck/Videos/Peek 2020-11-20 18-57.mp4' -map 0:0 -c:v copy /var/tmp/gnomecast_pid39666_transcode_0e8325fu.mp4
---------------------
 starting ffmpeg at:
---------------------
  File "/usr/lib/python3.8/threading.py", line 890, in _bootstrap
    self._bootstrap_inner()
  File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/home/dereck/.local/lib/python3.8/site-packages/gnomecast.py", line 1141, in update_transcoders
    self.transcoder = Transcoder(self.cast, fmd, self.video_stream, self.audio_stream, lambda did_transcode=None: GLib.idle_add(self.update_status, did_transcode), self.error_callback, transcoder)
  File "/home/dereck/.local/lib/python3.8/site-packages/gnomecast.py", line 306, in __init__
    traceback.print_stack()
chose subtitle No subtitles. None None
update_button_visible
update_button_visible
mc.status.player_state UNKNOWN /home/dereck/Videos/Peek 2020-11-20 18-57.mp4 -1786577983522074284
[record[a,in-unique,08ea3a5c-0c0e-3809-a853-58b32a4e3605.local.]=120/119,192.168.86.120:8009] Failed to connect, retrying in 5.0s

[Dereck Wonnacott]

I used the pip install version, and the 'master' branch form github:

[Dereck Wonnacott]

pip3 install zeroconf==0.24.3 solved this for me. Ubuntu 20.04 comes with 0.24.4 which apparently doesn't work correctly.