WebRTC aiortc test

Adapted from example-server

Install the dependencies

pip install aiohttp aiortc uvloop

Modify aiortc to allow this usecase

Requires some in-place modifications to the aiortc library:

• rtcrtpsender.py
  • self.lastBitrateEstimate = 0 in __init__ (eg. L.106)
  • in _handle_rtcp_packet (~ L.265) replace

    if self.__encoder and hasattr(self.__encoder, "target_bitrate"):
        self.__encoder.target_bitrate = bitrate

    with

    self.lastBitrateEstimate = bitrate
    if self.__encoder and hasattr(self.__encoder, "target_bitrate"):
        #self.__encoder.target_bitrate = bitrate
        pass

    to enable bitrate modification and value tracking
• codecs/h264.py
  • consider hacking this to adjust the libx264 parameters:
  • in line ~135
  • consider disabling profile and level parameters
  • consider adding "preset": "ultrafast", to improve CPU encoding
  • consider adding "bframes": "2", to improve quality (last line)

Also install uvloop package to improve the performance a bit

run server_video.py --play-from <videoFile>