live stream m3u8 to youtubein python using rtmpy

from subprocess import Popen, PIPE

def youtube_stream(url, streamKey):

    ffmpeg = ['ffmpeg', '-i', url,
              '-vcodec', 'copy', '-acodec', 'aac', '-ar', '44100', '-f', 'flv', streamKey]

    p = Popen(ffmpeg, stdout=PIPE, stderr=PIPE)
    while True:
        output = p.stderr.readline()
        if output == '' and p.poll() is not None:
            break
        if output:
            print(output.strip().decode('utf-8'))