Play RTSP stream and desktop screen with the lowest possible delay

Hello, I liked this application ffpyplayer, I was able to find examples of how to put buttons in the kivy application, but I couldn't reproduce the desktop screen and I couldn't reduce the delay of the live stream, which was a few seconds. I haven't found many ways to embed ffplay in a window. To replicate the desktop: > ffplay -loglevel error -hide_banner -af \"volume=0.0\" -flags low_delay -f gdigrab -i desktop -offset_x 100 -offset_y 100 -video_size 640x480 -left 0 -top 300 -x 400 -y 225 The command to play the RTSP live stream with little delay that I found is this, ffplay plays well images from security cameras with support for ONVIF protocol, 1080p image, H.264 or H.265: > ffplay -loglevel error -hide_banner -af \"volume=0.0\" -flags low_delay -vf setpts=0 -rtsp_transport tcp rtsp://user:passwd@192.168.1.181:554/live/0/main -left 0 -top 50 -x 400 -y 225 I understand that it is difficult to have a camera on hand to test the RTSP stream, but there is ONVIF server software that emulates a camera stream to play files or the desktop screen, for example. > ffplay -loglevel error -hide_banner -af \"volume=0.0\" -flags low_delay -vf setpts=0 -rtsp_transport tcp rtsp://192.168.1.35/screenlive -left 0 -top 50 -x 400 -y 225 If I run ffplay directly, there is practically no delay, but with the test.py example, the user can already notice that there is a delay. The exemple https://github.com/matham/ffpyplayer/blob/master/examples/test.py ONVIF server software: https://www.happytimesoft.com/products/onvif-server/index.html Could you tell me how I can set the ffplay command flags in ffpyplay? Another thing is about the log, I tried leaving `log_level = 'error'`, but I continued to have debug type messages. Then I tried other ways, but I didn't have much success. ```Python def on_start(self): self.callback_ref = WeakMethod(self.callback) filename = 'rtsp://192.168.1.35/screenlive' #sys.argv[1] logging.info('ffpyplayer: Playing file "{}"'.format(filename)) # try ff_opts = {'vf':'edgedetect'} http://ffmpeg.org/ffmpeg-filters.html ff_opts = {'loglevel': 'error', 'fflags': 'low_delay'} self.ffplayer = MediaPlayer(filename, callback=self.callback_ref, loglevel=log_level, ff_opts=ff_opts) ```