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• GPLv3

  Nicola Leonardi • 05/29/2016 at 23:31 • 0 comments

  This project is now licensed under the GPL v3, see LICENSE in github repo

• Created simple python script for keystroke to OSC

  Nicola Leonardi • 05/29/2016 at 23:15 • 0 comments

  Threw together a quick script for testing functionality

  #! /usr/bin/env python3
  """
  This converts keyboard input to basic OSC commands for controlling video playback
  """
  import argparse
  import sys
  import tty
  import termios
  
  from pythonosc import osc_message_builder
  from pythonosc import udp_client
  
  
  def getch():
      fd = sys.stdin.fileno()
      old_settings = termios.tcgetattr(fd)
      try:
          tty.setraw(fd)
          ch = sys.stdin.read(1)
      finally:
          termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
      return ch
  
  if __name__ == "__main__":
      parser = argparse.ArgumentParser()
      parser.add_argument("--ip", default="127.0.0.1",
          help="The ip of the OSC server")
      parser.add_argument("--port", type=int,  default=12345,
          help="The port the OSC server is listening on")
      args = parser.parse_args()
  
      client = udp_client.UDPClient(args.ip, args.port)
  
      keymap = {
          'p' : "/play",
          'n' : "/next",
          'b' : "/previous",
          'f' : "/faster",
          's' : "/slower"
      }
  
      ch = ''
      while ch != 'q':
          ch = getch()
          if ch in keymap:
              msg = osc_message_builder.OscMessageBuilder(address = "/video"+keymap[ch])
              msg = msg.build()
              client.send(msg)
  

  
  

• Added ideas for basic functionality via OSC

  Nicola Leonardi • 05/29/2016 at 22:38 • 0 comments

  OSC addresses

  /video/load ,i

  /video/play ,i

  /video/reverse ,i

  /video/speed ,i

• Project Goals

  Nicola Leonardi • 05/29/2016 at 21:15 • 0 comments

  Create a human interface device capable of sending OSC commands:

  - Functions: Play/Pause, Forward/Reverse, Tap Tempo, Next/Prev, CUE#, etc...

  - Output through ethernet, wifi, or usb.

  - Could be a python script to capture keystrokes, or a smartphone app, or raspberry pi/arduino/esp8266

  Create a server application:

  - Functions: Load video files, output RTP

  - Possibly Python wrapper for gstreamer

  - Stream 640x480 mp4 with sub 50ms latency

  - Switch video cues and change playback speed on the fly
  

  Everything could be running on a single computer or distributed across a LAN. For optimal streaming latency probably will need dedicated network, either router or loopback interface.
  

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