Unable to add element intervideosink

[brucekim]

Hi there,

I have built the latest source of brave and performed simple test,

• installed: GStreamer 1.14.3, python3.6 and all other preliminaries including libraries.
• simple test pipeline: a video input -> mixer -> output(rtmp)

However it doesn't work at adding input to mixer. I think 'intersink' has not been created properly.

Does anyone know how t solve it?

debug log

[2021-03-25 13:01:29 +0900] [45497] [INFO] Goin' Fast @ http://0.0.0.0:5000 INFO: [ output1] RTMP output now configured to send to rtmp://[test_rtmpserver_ip_addr]/live/livestream ERROR: [ input1] Unable to add element intervideosink ERROR: [ input1] Unable to add element queue Traceback (most recent call last): File "brave.py", line 71, in start_brave() File "brave.py", line 61, in start_brave session.start() File "/home/bkim/git/brave/brave/session.py", line 36, in start self._setup_initial_inputs_outputs_mixers_and_overlays() File "/home/bkim/git/brave/brave/session.py", line 89, in _setup_initial_inputs_outputs_mixers_and_overlays mixer.setup_sources() File "/home/bkim/git/brave/brave/mixers/mixer.py", line 94, in setup_sources connection.add_to_mix(details) File "/home/bkim/git/brave/brave/connections/connection_to_mixer.py", line 47, in add_to_mix self._ensure_elements_are_created() File "/home/bkim/git/brave/brave/connections/connection_to_mixer.py", line 186, in _ensure_elements_are_created self._create_video_elements() File "/home/bkim/git/brave/brave/connections/connection_to_mixer.py", line 212, in _create_video_elements intervideosrc, intervideosink = self._create_inter_elements('video') File "/home/bkim/git/brave/brave/connections/connection.py", line 99, in _create_inter_elements intersink.set_property('channel', channel_name) AttributeError: 'NoneType' object has no attribute 'set_property'

yaml configuration

enable_video: true enable_audio: true

default_mixer_width: 640 default_mixer_height: 360

inputs: - id: 1 type: test_video pattern: 18

outputs: - type: rtmp uri: rtmp://[test_rtmpserver_ip_addr]/live/livestream source: mixer1

mixers: - sources: - uid: input1 zorder: 2 width: 160 height: 90

[brucekim]

This has been resolved with reinstalling latest gstreamer, 1.19.0, on Ubuntu 20.04.