About SRT

This guide provides information about using the SRT feature in select Roland video products.

SRT (Secure Reliable Transport) is an open-source standard for AVoIP developed by Haivision. It provides secure encrypted audio and video transmission over IP networks and future-proof connectivity within installed system configurations.

SRT seamlessly extends the production capabilities of your supported Roland product via LAN or an internet connection. It allows you to access camera images from remote locations and switch them along with local HDMI and SDI sources. You can also send a dedicated SRT video output to an external destination, such as another building at the production location.

Compatible Products

Configuring the SRT System

Compatible Roland products have one SRT input and one SRT output, with independent settings for each.
The following SRT formats are supported:

Container: MPEG2 TS
Video: H.264
Audio: AAC

Six settings are required to make an SRT connection.
For detailed instructions, refer to the reference manual for the compatible Roland product.

1. Caller/Listener
2. Port Number
3. IP Address
4. Latency
5. Encryption
6. Bit Rate

Let’s look at each step.

1 Caller/Listener

The first step requires setting up Caller and Listener settings for each connected device.
The connection is established when the Listener accepts a connection request from the Caller.
Roland products have separate Caller and Listener settings for the SRT input and output.

Input
The following input options are available.

Output
The following output options are available.

Up to three Callers can be connected to Roland SRT products, allowing for distribution to up to three different destinations.

2 Port Number

Set the same Port number for all connected devices.
There is no specific Port number specified by the SRT standard.

3 IP Address

Configure the network settings of the Roland device.
Next, enter the IP address (Local/Global) of the connected device.

4 Latency

Configure the latency settings for the current network conditions.
For a stable connection, set a sufficient RTT (Round Trip Time).
For long-distance video streaming, a higher value will be required for reliable operation.

5 Encryption

Encryption enables secure connections.
You can choose from four options: AES-128, AES-192, AES-256, or no encryption.
The encryption type must be the same on all connected devices.
You need to create a passphrase (10-79 characters) when the encryption is set.

6 Bit Rate

Roland SRT devices support input streams with a 20 Mbps bit rate.
However, if the Capacity parameter is set to Standard, the input source bit rate must be set to 10 Mbps or lower.
Bit rates up to 20 Mbps are always available on the output of the Roland device.

Supported Formats

Standard Mode (Up to 10 Mbps):
720p25, 720p29.97, 720p30, 720p50, 720p59.94, 720p60, 1080p25, 1080p29.98, 1080p30

High Mode (Up to 20 Mbps):
720p25, 720p29.97, 720p30, 720p50, 720p59.94, 720p60, 1080p25, 1080p29.98, 1080p30, 1080p50, 1080p59.94, 1080p60

Applications

The advantage of configuring a system with SRT is a stable and secure connection with remote locations and servers. This is useful for many different applications.

Tip: View the SRT Stream on a Computer

VLC Media Player

1. Launch the software, and then click Media in the menu tab and select Network Stream.
2. On the Network tab, enter the IP address and port number of the connection destination. Here are the Caller and Listener settings on the computer side:
   
   
3. After entering, click Play to display the SRT video.

OBS

Note: To view the SRT stream in OBS, VLC Media Player must be installed on the computer.

1. Launch the OBS software.
2. Click + in the source dialog and select VLC Media Source.
3. Create a name and click OK.
4. Click + and select Add Path/URL.
5. Enter the connection destination's IP address and port number, as well as the computer's Caller and Listener settings shown in the VLC Media Player instructions above.
6. After entering, click OK to display the SRT video.

Compatible SRT Devices

These devices have been tested with Roland SRT products.
We strongly recommend user-testing of any SRT device to ensure compatibility before use at a venue or event.

Maker	Panasonic	Canon	JVC
Model Name	AW-UE40 AW-UE50 AW-UE80 AW-UE100 AW-UE150 AW-UE160	CR-N100 CR-N300 CR-N500 CR-N700 CR-X300	KY-PZ200 KY-PZ400 KY-PZ510

*Codec: H.264, Average bit rate of 20,000 kbps or less, Maximum 1080/59.94p