SRT Server

Castr SRT streaming server is the ultimate solution for high-quality, low-latency video streaming on any network.


Secure srt Streaming

SRT - Secure Reliable Transport explained

SRT (Secure Reliable Transport) is the video streaming protocol that delivers secure, high-quality and low-latency live videos over even the most unpredictable networks. With the protection against packet loss, jitter and fluctuating bandwidth, SRT ensures that your stream gets the best possible viewing experience.

Use cases for SRT streaming includes:

Castr SRT Server Key Features. Member of SRT Alliance

Castr SRT Feature

Publish SRT

Send SRT Stream to Castr

Directly publish your stream from any SRT encoder to Castr.

Castr SRT Feature

Push SRT

Push to other SRT Destinations

Castr supports SRT publishing, you can send your stream to any SRT destination, even different SRT server.

Castr SRT Feature

SRT Playback URL

Pull SRT Streams to Your Encoder

With SRT pull URL support, you can pull your stream from Castr to your encoder in the lowest latency possible.

Castr SRT Feature

GEO Located SRT Nodes

Get Optimized Performance using Castr’s global ingest points

We have global ingest points across the world, which makes sure there’s no network throttling taking place when you push the SRT streams.

Castr SRT Feature

H265 Support for Stream Player

Convert H265 to H264

Our ingest supports h265. With our cloud transcoding feature, you can convert h265 to h264 to optimize your stream. Please contact us for customization or help on this.

Castr SRT Feature

Pull SRT

Pull and ingest SRT

Using our pull feature, you can pull SRT streams to our servers and then restream to other destinations. You can make sure the latency is very low when you pull SRT to Castr

Castr SRT Feature

SRT Encoder and Decoder

H264 and H265 media transport

SRT software encoders and decoders provide end-to-end H264 or H265 media transport using SRT technology. Castr supports ingest from any SRT encoder.

Castr SRT Feature

SRT streaming to Youtube

Restream to Youtube

Publish your SRT stream to multiple platforms like Youtube, Facebook, Twitch simultaneously

Castr SRT Feature

Multiple streaming protocols

Castr supports multiple streaming protocols

Supports additional protocols including SRT, RTMP, RTSP, RTP, HLS, WebRTC, MPEG-DASH

Try Castr’s SRT Streaming Server

Try all features for 7 days. No contracts. No credit card required.

There’s even more...
All features you need for live streaming

Embed Player

Embed Player

Share video content globally

Embed videos and stream to your own website or any over-the-top (OTT) platform like Roku, Apple TV, and Amazon Fire TV.


OTT Apps

White-label OTT Solution

Castr’s white-label OTT solution lets you launch your own video streaming app with zero coding skills.


Stream to 30+ platforms

Broadcast your live videos across 30+ social platforms and streaming destinations at the same time.

Video Monetization

Paywall and Video Ads

Monetize your live and on-demand videos with Castr Paywall and Video Ads.

Video Hosting

Video Hosting

Secure Video Upload

Securely host and deliver on-demand video content globally.

Multiple CDN

Multiple CDNs

Ensure optimal viewing experience

Castr’s global CDNs make sure your viewers experience videos with 4K quality, low latency, and no buffering.

Frequently asked questions

Can’t find it here? Check out our Help Center.

  • What does SRT stand for?


    SRT (Secure Reliable Transport Protocol) is a new transport protocol that solves the issue of low-quality video under noisy, poor public internet networks. The goal behind its implementation is to optimize video transport over unpredictable networks by minimizing lost packets and bandwidth fluctuations. In short, SRT offers high-quality and low latency video streaming with greater security.

  • Can SRT be used to stream to Twitch, Youtube, Facebook?


    None of the mainstream services like Twitch, Youtube, Facebook supports SRT protocol at the moment. The best way to stream SRT to those platforms is by sending the SRT to Castr, and then using Castr to multistream to those social platforms simultaneously.

  • SRT vs RTMP. Comparing the two protocols?


    RTMP is currently the most widely used protocol for video live streaming, It's also used as an ingest protocol to live stream to platforms like Facebook, Youtube, Twitch, etc. However, SRT stream is 12 times faster than an RTMP stream and has stable delivery under poor networks.

    For detailed comparison, check out this article

  • How to Start Streaming with SRT from Castr?


    Castr now offers SRT support across all plans

    For step-by-step guide on SRT streaming on Castr, check out this article

  • What types of subscription plan does Castr offer?


    We offer several subscription plans that meet every need. From low cost plans to advanced and enterprise-level solutions.

    All plans include an embed player with Akamai CDN, multistreaming, video hosting, and paywall features.

  • Can I stream to a custom RTMP destination?


    Yes, you can stream to a custom RTMP destination by configuring a custom platform in the Castr dashboard.

  • Can I stream to multiple platforms on Castr?


    Yes. You can choose to stream to 30+ supported platforms.

  • Which Content Delivery Network (CDN) does Castr use?


    All live video streams are delivered via Akamai and Fastly content delivery networks (CDN). This will help us make sure there won’t be any buffering or lagging to your video streaming quality.

  • Does Castr support adaptive bitrate streaming (ABR)?


    Yes. We transcode the streams in the cloud and you have the option to enable or disable the adaptive bitrate streaming options for your livestreams.

Try Castr Live Streaming Platform

Try all features for 7 days. No contracts. No credit card required.