Broadcast video using RTSP The jit.broadcast object is an RTSP server. It takes a 4 char matrix as input, compresses the data and streams it over a network (local or internet) using the RTSP streaming standard. Cycling '74 Jitter Jitter Networking in TEXT_HERE TEXT_HERE out TEXT_HERE dumpout TEXT_HERE char Start the broadcast server Starts the broadcast server and reports the success or failure of the start operation from the right outlet of the jit.broadcast object. In the event of success, the message will be in the format start 1 URL. The URL argument is the RTSP URL which client computers will use to access the stream.
Note that, if your computer is behind a router, the IP address reported may not permit access to the stream by client machines outside of your local network. In that instance, you will need to substitute your network's WAN address (the IP address of the router, as seen by the outside world) for the IP address portion of the URL, before non-local clients can receive your broadcast. The vport will also need to be unblocked, if a firewall is active, and the port mapped to your computer behind the router. Stop the broadcast server Stops the broadcast server. Streaming video codec The video codec for streaming (default = mpeg4)
The available codec types are jpeg, mjpega, mjpegb, h263 and mpeg4. Data rate Sets the data rate in frames/second. Destination rectangle The rectangular portion of the streaming image to be drawn to, when an incoming matrix is received. (default = 0 0 (image width) (image height))
The proportions of the rectangle are expressed in the form left top right bottom. All values are relative to the top left corner of the viewing area of the streamed image. Interpolation Interpolation flag (default = 0)
IP address Video IP address (default = variable)
In multicast mode (the default. See unicast, below), this IP address is automatically assigned, and read-only, and refers to the special multicast address client computers access to reach your broadcast.
In unicast mode, this IP address should be set to the IP address of the single client computer. Keyframe rate Keyframe rate (default = 50)
If set, the jit.broadcast object will attempt to configure the video compressor to use the specified keyframe rate. Keyframes (temporal compression) are not available to all codecs. Streaming source mode Streaming source mode (default = 0)
0 = matrix input
1 = Hinted Movie input (uses the movie attribute to choose a pre-hinted source movie)
Mode 1 source movie Source movie for mode 1 (default = "")
If no movie is specified when setting this attribute, a File dialog will be presented. Movies must be hinted, to be used with the jit.broadcast object. See Tutorial 51: Broadcasting for more information. Port number Video broadcast port number (default = 8554)
The network port to be used by the video portion of the broadcast stream. Matrix preview flag Matrix preview flag (default = 0)
If set, an incoming matrix will be copied to the object's output matrix (with srcrect, interp or dstrect transformations) when the jit.broadcast object is streaming. Otherwise, the matrix is simply passed through the object. Only functional in mode 0. Broadcast dimensions The dimensions of the broadcast (default = 160 120)
Codec spatial compression quality Codec spatial compression quality (default = 2 (normal))
0 or min = minimum
1 or low = low
2 or normal = normal
3 or high = high
4 or max = maximum
5 or lossless = lossless

Note that minimum quality is, in many cases, the codec's default quality. Use "low" quality for consistent results. Source rectangle The rectangular section of the incoming matrix to compress and stream (default = 0 0 (movie width) (movie height)) Broadcast stream name Name of the broadcast stream, as displayed in the stream's URL (default = "jitStream")
Codec temporal compression quality Codec temporal compression quality (default = 2 (normal))
0 or min = minimum
1 or low = low
2 or normal = normal
3 or high = high
4 or max = maximum
5 or lossless = lossless

Note that minimum quality is, in many cases, the codec's default quality. Use "low" quality for consistent results. Packet time to live Packet time to live (default = 255)
Unicast broadcast flag Unicast broadcast flag (default = 0)
If set, the jit.broadcast object will broadcast in unicast mode. In this mode, the ip refers to a single client computer, which will be able to receive your broadcast. In multicast mode (the default), as many clients as your system's bandwidth can support will be able to access the stream. Use destination rectangle flag Destination rect flag (default = 0)
When the flag is set, the dstrect attributes are used when compressing an input matrix for streaming. Use source rectangle flag Source rect flag (default = 0)
When the flag is set, the srcrect attributes are used when compressing an input matrix for streaming. The proportions of the rectangle are expressed in the form left top right bottom. All values are relative to the top left corner of the viewing area of the incoming matrix. Video codec The video codec for streaming (default = h263)
Synonym for codec, above. IP address Video IP address (default = variable)
Synonym for ip, above. Port number Video broadcast port number (default = 8554)
Synonym for port_v, above.