stream

The stream command is used to create and manage streams to map the decoder inputs to output interfaces.

When creating a stream you can specify a unique ID to assign to it or let the system assign one for you. You can also specify a name for the stream if needed. The IP Address (addr field) is only required for multicast, but not for unicast streams. Most commands will accept the stream ID or name in order select the proper stream to manage.

Once a stream is connected to the decoder (using the dec command), you can start/stop the decoder by way of the stream ID (e.g., stream 1 start).

Synopsis

stream create [port=udpport] [addr=ipaddr] [id=number] [name=text]
 [encapsulation=ts-udp/ts-rtp/ts-srt] [decoderId=number (0 to 3)]
 [sourceaddr=mcastsenderaddr] [interface=auto,eth0,eth1]

stream id/name start
stream id/name stop
stream id/name delete
stream id/name/all get [config/stats/all]
stream all get table
stream id/name clear

Possible Encapsulation Formats

Possible encapsulation formats and their specific options:

ts-rtp: MPEG2 transport stream over RTP [fec=yes,no] 
ts-udp: MPEG2 transport stream over UDP (no RTP header)
ts-srt: MPEG2 transport stream over SRT (Secure Reliable Transport)
                   [latency=number] [passphrase=text] [authentication=none, auto, aes-gcm]
                   [mode=listener, caller, rendezvous] [sourceport=udpport]
                   [flipaddr=ipaddr] [flipport=udpport] [flipttl=ipttl]
                   [fliptos=iptos]
                   [resource="resid"] [user="username"]
                   [publishid="string"] (only if resource and user are not spec'd)

If encapsulation is ts-srt, you can specify a passphrase (10-79 characters)
and the maximum latency (how long the decoder will buffer received packets,
from 20-8000 ms).

Actions

Action	Description
create	Creates a decoder streaming session. A series of one or more `parameter=value` pairs can be specified at once.
delete	Removes the specified stream (entirely).
start	Starts the stream and its associated decoder.
stop	Stops the stream and its associated decoder.
get	Displays stream information. See Parameters below. You can specify to display the stream configuration, statistics, or all. `stream all get table` displays a summary of all the streams in a table format.
clear	Clears the stream’s statistics.
help	Displays usage information for the `stream` command.

Parameters

Parameter	Default	Description/Values
port	n/a	The UDP port for the Decoder. Enter a number in the range `1025..65,535`. Note that RTP streams use even numbers only within this range.
addr	n/a	(Optional, only required for multicast) Enter a Multicast IP address in dotted-decimal format. Note The Multicast address range is from `224.0.0.0` to `239.255.255.255`. Multicast addresses from `224.0.0.0` to `224.0.0.255` are reserved for multicast maintenance protocols and should not be used by streaming sessions. We recommend that you use a multicast address from the Organization-Local scope (`239.192.0.0/14`).
id	n/a	A unique number assigned to the stream. Note When creating a stream, you can specify a unique id to assign to it or let the system assign one (a sequential number) for you. Most commands will accept the stream id or name (see below) in order to select the proper stream to manage.
name	n/a	(Optional) When creating a stream, you can also specify a name for the stream. `1` to `32` characters
encapsulation	ts-rtp	(Optional) The Encapsulation Type for the stream. `ts-rtp` - MPEG2 transport stream over RTP `ts-udp` - MPEG2 transport stream over UDP (no RTP header) `ts-srt` - MPEG2 transport stream over SRT (Secure Reliable Transport)
decoderId	n/a	The decoder SDI output port selected for the stream. `0` to `3` Important Decoder 0 has highest priority, and and the video decoding resources are prioritized with the lower decoder numbers (i.e., 0, then 1, 2, and 3) having higher priority. For more information, see Oversubscription of Decoder Channels.
sourceaddr	n/a	(Multicast streams only) Enter the multicast sender IP address in dotted-decimal format (i.e., what address is broadcasting). See “Source Address” under Stream Settings.
interface	auto	(Dual NICs must be available) Assigns the stream to either eth0 or eth1, or auto. (When set to "auto", eth0 takes precedence as long as the address is resolvable; otherwise the output switches to eth1.)
ts-rtp only
FEC	None	(Optional) To enable Forward Error Correction (FEC), specify `fec=yes`. FEC varies with the protocol (encapsulation): TS over UDP = VF FEC TS over RTP = Pro-MPEG FEC NOTE: VF FEC is a proprietary FEC and is not interoperable with devices outside of the Haivision family. The FEC level is read from the encoded stream.
ts-srt only
latency	125	Specifies how long the decoder will buffer received packets, from 20-8000 ms. See “Latency” under SRT Stream Settings.
mode	listener	Specifies the SRT Connection Mode (to simplify firewall traversal): `caller`: The SRT stream acts like a client and connects to a server listening and waiting for an incoming call. `listener`: The SRT stream acts like a server and listens and waits for clients to connect to it. `rendezvous`: Allows calling and listening at the same time. Also, to simplify firewall traversal, Rendezvous Mode allows the encoder and decoder to traverse a firewall without the need for IT to open a port.
passphrase	n/a	(Optional) A sequence of words or other text used to control access to the stream. Similar to a password in usage, but is generally longer for added security. This parameter is required if the stream is encrypted and is used to retrieve the cryptographic key protecting the stream. From 10-79 characters.
authentication	none	(Only available when `encryption` is enabled; encapsulation must be ts-srt) Configures Authenticated-Encryption with Associated-Data (AEAD). Options are: `None` - Default for Caller and Rendez-vous modes. Not available for Listener mode. `Auto` - Default for Listener mode. Not available for Caller or Rendez-vous modes. `AES-GCM` - Available for Caller, Listener, and Rendez-vous modes. Note Setting the authentication to Auto allows the Listener to accept Callers with authentication set to either None or AES-GCM. Listeners with the authentication set to AES-GCM will only accept Callers which are also set to AES-GCM.
resource		(Stream Publishing ID) Identifies the name of the resource and facilitates selection should the listener party be able to serve multiple resources. See Configuring SRT Access Control.
sourceport		(Caller and Rendezvous Connection modes) Specifies the UDP source port for the SRT stream. If not filled in, a (default) source port will be assigned. Note This simplifies firewall configuration as the firewall/NAT rules can be precisely tailored to the SRT stream.
SRT to UDP Stream Conversion (ts-srt only)
flipaddr	n/a	Specifies the destination IP address for the stream. See “SRT to UDP Stream Conversion (TS over SRT only)” under SRT Stream Settings.
flipport	n/a	Specifies the UDP source port for the stream.
flipttl	64	(Time-to Live for stream packets) Specifies the number of router hops the stream packet is allowed to travel/pass before it must be discarded. `1..255`
fliptos	184 or 0xB8	(Type of Service) Specifies the desired quality of service (QoS). This value will be assigned to the Type of Service field of the IP Header for the outgoing streams. Range = `0..255` (decimal) or `0x00..0xFF` (hex)
SRT Access Control
publishid	n/a	(Stream Publishing ID) Enter using custom format. For more information, see Configuring SRT Access Control.
resource	n/a	(Stream Publishing ID) Identifies the name of the resource and facilitates selection should the listener party be able to serve multiple resources. See Configuring SRT Access Control.
user	n/a	(Stream Publishing ID) Identifies the User Name, or authorization name, that is expected to control which password should be used for the connection. The application should interpret it to distinguish which user should be used by the listener party to set up the password.

stream Examples

# stream create addr=10.6.230.106 port=2000 name=infodev

Creates a streaming session from IP Address 10.6.230.106 at port 2000. Returns a confirmation such as:

Stream created successfully - ID: 1.

# stream 1 start

Starts the the stream and its associated decoder. Returns a confirmation such as:

Stream started successfully.

# stream 1 get all

Returns configuration information for decoder stream #1, such as:

Stream ID            : 1
Name                 : (None)
Configuration
  Interface          : Auto
  Address            : 10.65.135.55
  UDP Port           : 3436
  Decoder            : 0
  Encapsulation      : TS-SRT
  Mode               : Rendezvous
  AES Encryption     : On
  Latency            : 250 ms
  Stream Flipping    : Off
Statistics:
  State              : ACTIVE
  Up Time            : 8m21s
  Source Address     : 10.65.135.55 port 3436
  Bit Rate           : 5.87Mbps
  Received Packets   : 53,460 (Last One: 0s ago)
  Received Bytes     : 382,894,959
  Connections        : 1 (Last One: 8m20s ago)
  New Stream Flags   : 1 (Last One: 8m59s ago)
  Resumed Stream Flags : 1 (Last One: 8m59s ago)
  Program Number     : 1
  PCR PID            : 34
  Streams            : 2 (1 video, 1 audio, 0 KLV, 0 filtered)
SRT Stats
  Local Version      : 1.3.2
  Peer Version       : 1.3.2
  Connections        : 1
  Local Port         : 3436
  Remote Port        : 3436
  AES Encryption     : On
  Key Length         : 128 bits
  Decryption         : Active
  Sent ACKs          : 32,573
  Link Bandwidth     : 161,005 kbps
  RTT                : < 1 ms
  Local Buffer Level : 222 ms
  Latency            : 250 ms
  VIDEO STREAM
    Compression      : H.265
    Bit Rate         : 7.9 Mbps
    Program ID       : 33
    Received Packets : 16,139 (Last One: 0s ago)
    Received Bytes   : 511,288,937
    PTS              : 55652090
    DTS              : 55652090
    AUDIO STREAM 1
    Compression      : AAC-ADTS
    Bit Rate         : 80.6 kbps
    Program ID       : 36
    Received Packets : 25,243 (Last One: 0s ago)
    Received Bytes   : 5,385,173
    PTS              : 55654479
    DTS              : 55654479

# stream 1 get stats

Returns status information for decoder stream #1, such as:

Stream ID         : 1
Name              : (None)
Statistics:
 State            : Streaming
 Output           : DECODER-1
 Up Time          : 2d4h42m4s
 Bitrate          : 6,149 kbps
 Received Packets : 20,260,289
 Received Bytes   : 1,479,361,480
 Received Errors  : 0
 Last Received    : 0s ago
 Stream PCR       : 0x1f9c7ab31
 MPEG2TS Lost Packets : 4
 Corrupted Frames : 2
 Pauses           : 0
 Source Address   : fd00:10:65:132:5e77:57ff:fe00:ae6a

# stream 1 delete

Deletes Stream #1.

Related Topics