NetLinx Programming
Command | Description | |
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SET URL | The communication parameters must include: communication protocol, | |
Set the URL parameters for | IP Address, and port used. | |
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the current audio/video | Syntax: | |
stream. | SEND_COMMAND <DEV>,"'SET URL <protocol> <addr> <port> | |
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| [<audio port>]'" | |
| Variables: | |
| protocol = RTP or UDP. | |
| address = Address of stream in IPv4 dot notation (ex: X.X.X.X). | |
| port = Primary port for audio/video transport. | |
| audio port = Port for audio stream (RTP only). | |
| Example: | |
| SEND_COMMAND ENCODER,"'SET URL UDP 239.168.42.10 5000'" | |
| Sets the URL to a multicast session (UDP) where it will use port 5000 at an | |
| IP Address of 239.168.42.10. Since the protocol is UDP, a second audio port is | |
| not needed. | |
| Example 2: | |
| SEND_COMMAND ENCODER,"'SET URL RTP 239.168.42.10 5000 | |
| 5002'" | |
| Sets the URL to an IP Address of 239.168.42.10. Since the protocol is RTP, | |
| two ports are needed; port 5000 is used for the video stream and port 5002 is | |
| used for the audio stream. | |
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SET VIDEO | The configuration parameters include: codec, resolution, and bit rate. | |
Set the configuration | Note: Setting the video configuration during 'play' state has undefined results. | |
parameters for the video | Syntax: | |
codec. | ||
SEND_COMMAND <DEV>,"'SET VIDEO <codec> <res> <rate> | ||
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| <mode>'" | |
| Variables: | |
| codec = Off, MPEG2, or MPEG4. | |
| res = D1, or SIF, or <width>X<height> (up to a D1 resolution). | |
| rate = Bit rate specified in Kbps (kilobits per second). | |
| - range of 2000 - 6000 used for an MPEG2 stream | |
| - range of 500 - 3000 used for an MPEG4 stream | |
| mode = CBR (constant Bit rate) or VBR (variable Bit rate). | |
| Example: | |
| SEND_COMMAND ENCODER,"'SET VIDEO MPEG2 D1 6000 CBR'" | |
| Sets the video configuration to use a very high quality video stream set at | |
| MPEG2, with a D1 resolution at constant bit rate of 6000 Kbps. | |
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