stream.py: provides a stream of a macos primary display on a flask server at 0.0.0.0:5000 (warning: hardcoded path to ffmpeg, may need to change)

stream.py

import flask
import subprocess

app = flask.Flask (__name__)

@app.route ("/")
def root ():
	def gen ():	
		popen = subprocess.Popen ("~/Documents/ffmpeg/ffmpeg -f avfoundation -i 1 -c:v libx264 -preset ultrafast -tune zerolatency -f matroska -", shell = True, stdout = subprocess.PIPE)
		# popen = subprocess.Popen ("ffmpeg/ffmpeg -f avfoundation -i 1 -c copy -f matroska -", shell = True, stdout = subprocess.PIPE)
		while True:
			print ("tryna read")
			data = popen.stdout.read (1024 * 1024)
			print ("read done")
			if not data:
				print ("shit ded")
				break
			print ("yielding")
			try:
				yield data
			except:
				popen.stdout.close ()
				popen.terminate ()
				print ("didnt yield")
				raise
			print ("yielded")
		print ("done i guess")
	return flask.Response (gen (), mimetype = "video/x-matroska")

app.run (host = "0.0.0.0")