FAQ — IN/OUT-SRT

Overview

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What is IN/OUT-SRT?

A relay service for SRT video streams. Your encoder connects in, your receiver connects out — no static IP, no network configuration required.

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SRT Protocol

Secure Reliable Transport — the broadcast-grade protocol for low-latency video with built-in packet loss recovery.

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Who is it for?

Studios connecting remote locations, live event producers, broadcasters needing a reliable contribution link without a static IP.

Getting Started

How do I start using IN/OUT-SRT?

Open @inoutsrt_bot on Telegram and press Start. Choose a server (Germany, USA or Singapore), create a stream — you'll receive an SRT input URL and a first output URL. Point your encoder at the input and start sending within seconds.

Which servers are available?

Three locations: Germany (de.inoutsrt.com), USA East (usa.inoutsrt.com) and Singapore. Choose the one geographically closest to your source and destination. Singapore has limited capacity: a shared limit on inputs and outputs, no monthly pass and no test signal of its own.

What software can I use?

Sending: OBS Studio, vMix, Wirecast, FFmpeg, Larix Broadcaster.
Receiving: VLC, vMix, FFplay, Haivision Play, any SRT-capable decoder.

Do I need a static IP address?

No — and that's the main reason people use IN/OUT-SRT. Both the sender and receiver connect to our server in caller mode, so neither end needs a static IP. The routing is handled automatically.

Technical

What latency can I expect?

End-to-end latency is typically 200–500ms depending on the configured SRT latency value and network conditions. Significantly lower than RTMP, HLS, or video-conferencing tools.

What bitrate is supported?

Up to 50 Mbps per stream. Recommended: 5–15 Mbps for Full HD, 20–35 Mbps for 4K.

Is a passphrase required?

No, but recommended — it enables AES-128 encryption and prevents unauthorized access.

How many outputs can I add?

The first output is created together with the input and shares its passphrase. A free stream has just that one. A paid stream can have unlimited outputs on Germany and USA, and more while there is room on Singapore. Each added output gets its own SRT URL and its own passphrase.

Does IN/OUT-SRT transcode?

No. The stream is passed through in copy mode — whatever codec you send (H.264, HEVC, AV1) is delivered unchanged. No quality loss.

Pricing & Limits

Is IN/OUT-SRT free?

Yes. 3 free streams per day, each up to 30 minutes. All servers available, one output included.

How does the paid session work?

Pay 250 Telegram Stars (~$5) for 24 hours of continuous streaming with unlimited outputs on Germany and USA. Payment via Telegram's built-in system. Session renewal supported.

When do free limits reset?

At midnight UTC.

Usage Examples

How do I send from OBS?

In OBS: Settings → Stream → Service: Custom. Paste your SRT input URL:

srt://de.inoutsrt.com:5000?passphrase=mypass

Leave Stream Key blank. Click Start Streaming.

How do I receive in VLC?

In VLC: Media → Open Network Stream. Paste the SRT output URL:

srt://de.inoutsrt.com:7000?passphrase=mypass

Press Play.

How do I connect two studios?

Studio A sends to the SRT input URL. Studio B connects to the SRT output URL. Neither needs a static IP — everything routes through IN/OUT-SRT automatically.

Ready to start?

Set up your first SRT stream in under a minute — no registration required.

Open @inoutsrt_bot

Frequently Asked Questions