Video playback is jittery when using multiple nv3dsink instances in the same program/process.
For example, “gst-launch-1.0 videotestsrc pattern=ball ! ‘video/x-raw,width=1920,height=1080,framerate=30/1’ ! tee name=t ! queue ! nvvidconv ! nv3dsink t. ! queue ! nvvidconv ! nv3dsink”
If replace one or all nv3dsink with xvimagesink, video playback is very smooth.
For example, “gst-launch-1.0 videotestsrc pattern=ball ! ‘video/x-raw,width=1920,height=1080,framerate=30/1’ ! tee name=t ! queue ! nvvidconv ! nv3dsink t. ! queue ! xvimagesink”
The below program has two pipelines and one nv3dsink per pipeline, the video playback is jittery. If replace one nv3dsink with xvimagesink, the playback will be smooth again.
#!/usr/bin/python3
import sys
import gi
gi.require_version('Gst', '1.0')
from gi.repository import Gst, GObject
Gst.init(sys.argv)
a_pipeline = Gst.parse_launch('videotestsrc pattern=ball ! video/x-raw,width=1920,height=1080,framerate=30/1 '
# '! xvimagesink'
'! nvvidconv ! nv3dsink'
)
b_pipeline = Gst.parse_launch('videotestsrc pattern=ball ! video/x-raw,width=1920,height=1080,framerate=30/1 '
# '! xvimagesink'
'! nvvidconv ! nv3dsink'
)
a_pipeline.set_state(Gst.State.PLAYING)
b_pipeline.set_state(Gst.State.PLAYING)
loop = GObject.MainLoop()
try:
loop.run()
except:
print('Exitting...')
b_pipeline.set_state(Gst.State.NULL)
a_pipeline.set_state(Gst.State.NULL)
loop.quit()