SRT Output

This feature requires a Pro license.

SRT Output allows you to stream video from OmniScope using the Secure Reliable Transport (SRT) protocol. SRT is designed for low-latency, secure streaming over unpredictable networks, including the internet.

Overview

SRT Output is ideal for:

• Remote monitoring over the internet

• Streaming to cloud-based services

• Secure transmission of video content

• Reliable delivery over unreliable networks

Requirements

• OmniScope Pro license

• Network connection

• SRT-compatible receiver (software or hardware)

Setup

Enabling SRT Output

1. Go to View > Output Settings or click the output icon in the toolbar

2. Select SRT from the output type dropdown

3. Configure the connection settings

4. Click Enable to start streaming

Connection Modes

SRT supports two connection modes:

Mode	Description	Use Case
Caller	OmniScope connects to a remote listener	Streaming to a server
Listener	OmniScope waits for incoming connections	Receiving pulls from clients

Settings

Setting	Description	Default
Mode	Caller or Listener	Caller
Address	Remote IP/hostname (Caller mode)	-
Port	Network port	9000
Latency	Buffer latency in milliseconds	120ms
Passphrase	Optional encryption key	None
Output Mode	Source only or scope view	Source

Output Modes

Mode	Description
Source	Sends only the input video signal
Scopes	Sends the full OmniScope interface

Connection Examples

Streaming to a Server (Caller Mode)

1. Set Mode to Caller

2. Enter the server's IP address and port

3. Optionally set a passphrase for encryption

4. Click Enable

Allowing Remote Connections (Listener Mode)

1. Set Mode to Listener

2. Set the port to listen on

3. Optionally set a passphrase

4. Click Enable

5. Share your IP address and port with receivers

Security

SRT supports AES encryption for secure transmission:

1. Set a Passphrase in the output settings

2. Share the same passphrase with receivers

3. All data will be encrypted in transit

Always use encryption when streaming over public networks or the internet.

Performance Tuning

Latency Setting

The latency buffer helps handle network jitter:

Network Type	Recommended Latency
Local LAN	20-50ms
Stable internet	120-200ms
Unstable/long distance	500-1000ms

Lower latency = less delay but more sensitive to network issues. Higher latency = more delay but more resilient.

Bandwidth Requirements

SRT streams are encoded; bandwidth depends on encoder settings:

Resolution	Typical Bandwidth
1080p30	5-15 Mbps
1080p60	10-25 Mbps
4K30	20-50 Mbps

Troubleshooting

Connection Failed

1. Verify the remote address and port are correct

2. Check firewall settings on both ends

3. Ensure the receiver is in the correct mode (Listener if you're Caller)

4. Try increasing the latency setting

If the encoder fails to initialize repeatedly, OmniScope will back off and stop retrying every frame automatically. Click Apply Settings to clear this recovery block and attempt a fresh connection.

Poor Quality or Artifacts

1. Increase the latency setting

2. Check network bandwidth availability

3. Reduce output resolution or frame rate

High Latency

1. Reduce the latency setting (if network allows)

2. Use a closer server/receiver

3. Check for network congestion

Tips

• Start with higher latency and reduce gradually to find the optimal setting

• Use Listener mode when you have a static IP and want others to connect to you

• Use Caller mode when connecting to a known server or service

• SRT works well over WiFi and cellular networks due to its error correction

Related

• SRT Input - Receive SRT streams in OmniScope

• NDI Output - LAN-based streaming alternative

• SDI Out - Hardware SDI output