Licensing

VASTreaming libraries are available as prebuilt binaries or as full source code. Each option has its own licensing model, described below. All prices are per-library and are listed on our pricing page.

Binary Licensing

Binary licenses provide prebuilt libraries ready to integrate into your project. Each licensed library requires a separate license per platform and per function, such as server, client, etc.

Granular pricing: the per-function licensing model is designed to minimize cost when you only need a specific feature. If your project requires multiple functions and protocols, a source code license may offer better value.

Licensed Libraries

The following functions each require their own license:

• VAST.Audio — Echo Canceller
• VAST.Audio — PCM Client
• VAST.Audio — PCM Server
• VAST.Codec — FFmpeg Decoder and Encoder
• VAST.Codec — Nvidia Decoder and Encoder
• VAST.Codec — Managed Decoders and Encoders
• VAST.DASH — MPEG-DASH Server
• VAST.File.ISO — MP4 File Reader and Writer
• VAST.File — Playlist Source
• VAST.File — MPA Source and Sink
• VAST.File — WAV Source and Sink
• VAST.File — MP4 Utilities
• VAST.HLS — HLS Client
• VAST.HLS — HLS Server
• VAST.ICE — ICE Server
• VAST.Image — Mixing Video and Audio
• VAST.Image — Image Source
• VAST.Image — MJPEG Client
• VAST.Image — MJPEG Server
• VAST.NDI — NDI Source (Capture)
• VAST.NDI — NDI Sink
• VAST.Network — Core Multi-Protocol Server
• VAST.Network — API Server
• VAST.ONVIF — Discovery and PTZ
• VAST.RTMP — RTMP Client
• VAST.RTMP — RTMP Publisher
• VAST.RTMP — RTMP Server
• VAST.RTMP — FLV Writer
• VAST.RTSP — RTSP/RTP Client
• VAST.RTSP — RTSP/RTP Publisher
• VAST.RTSP — RTSP Server
• VAST.SRT — SRT Client
• VAST.SRT — SRT Publisher
• VAST.SRT — SRT Server
• VAST.SRT — File Sender and Receiver
• VAST.TS — TS Clients
• VAST.TS — TS Publishers
• VAST.TS — TS Servers
• VAST.TS — TS File Reader and Writer
• VAST.UI — Capture and Preview Control for MAUI
• VAST.UI — Capture and Preview Control for WinForms
• VAST.UI — Capture and Preview Control for WinUI
• VAST.UI — Capture and Preview Control for WPF
• VAST.UI — Playback Control for MAUI
• VAST.UI — Playback Control for WinForms
• VAST.UI — Playback Control for WinUI
• VAST.UI — Playback Control for WPF
• VAST.Web — WebTransport Server
• VAST.WebRTC — WebRTC Client
• VAST.WebRTC — WebRTC Publisher
• VAST.WebRTC — WebRTC Server

Free Libraries

VAST.Common and VAST.Common.Ext.* libraries are provided free of charge with any licensed library. They contain shared infrastructure used across the product suite.

Volume Discounts

Binary licenses are priced individually. No volume discounts apply—each library and platform combination is licensed at the listed price.

Connection Limit

Binary server libraries are limited to 100 concurrent connections, counting all incoming and outgoing connections. For high-performance server deployments, consider a source code license which removes this restriction.

Pricing overlap

Some libraries include related components at no extra cost—for example, VAST.TS is included free with a VAST.HLS license. Contact us for a final calculation based on your specific requirements.

Example: Binary Licensing

Suppose you need RTMP and RTSP/RTP clients for both Windows and Android. That is 4 licenses:

• RTMP — Client for Windows (1 license)
• RTMP — Client for Android (1 license)
• RTSP/RTP — Client for Windows (1 license)
• RTSP/RTP — Client for Android (1 license)

Total: 4 × 59 = $236 USD for annual subscription or 4 x 250 = $1000 USD for a lifetime license.

Source Code Licensing

Source code licenses give you full access to the library source. Because the codebase is shared across all supported platforms, a single source license covers every platform—no additional per-platform charges.

Licensed Libraries

The following libraries each require their own source license:

• VAST.Audio — Echo Canceller and PCM Client/Server
• VAST.Codec — FFmpeg, Nvidia and Managed Decoders and Encoders
• VAST.DASH — MPEG-DASH Server
• VAST.File.ISO — MP4 File Reader and Writer
• VAST.File — Playlist, MPA, WAV Sources and Sinks and MP4 Utilities
• VAST.HLS — HLS Client and Server
• VAST.ICE — ICE Server
• VAST.Image — Mixing Video and Audio, Image Source, MJPEG Client and Server
• VAST.NDI — NDI Source and Sink
• VAST.Network — Core Multi-Protocol and API Servers
• VAST.ONVIF — Discovery and PTZ
• VAST.RTMP — RTMP Client, Publisher and Server, and FLV Writer
• VAST.RTSP — RTSP/RTP Client, Publisher and Server
• VAST.SRT — SRT Client, Publisher, Server and File Transfer
• VAST.TS — TS Clients, Publishers, Servers, File Reader and Writer
• VAST.Web — WebTransport Server
• VAST.WebRTC — WebRTC Client, Publisher and Server

Free with Source License

Capture and Playback libraries are included as a free bonus with any source code purchase. VAST.Common and VAST.Common.Ext.* are also included free.

Volume Discounts

Source code licenses offer volume discounts based on the number of libraries purchased:

• 3rd library onward (2+ purchased): 20% discount on each additional library starting from the 3rd
• 6th library onward (5+ purchased): 40% discount on each additional library starting from the 6th
• Cross-codebase: if you already own .NET sources and purchase C++ sources (or vice versa), 50% discount applies to the entire second codebase

Discounts are not cumulative—when multiple discounts apply, the highest single discount is used.

Pricing overlap

Some libraries include related components at no extra cost—for example, VAST.TS is included free with a VAST.HLS license. Contact us for a final calculation based on your specific requirements.

Example 1: Volume Discount

You purchase source code for 4 libraries: VAST.RTMP, VAST.RTSP, VAST.HLS, and VAST.File.ISO. Assuming each is priced at $2500 USD:

• VAST.RTMP — 2500 (full price)
• VAST.RTSP — 2500 (full price)
• VAST.HLS — 0.8 × 2500 = 2000 (20% discount, 3rd library)
• VAST.File.ISO — 0.8 × 2500 = 2000 (20% discount, 4th library)

Total: 2 × 2500 + 2 × 2000 = $9000 USD. Capture and Playback sources are included free. All platforms covered.

Example 2: Larger Volume

You purchase source code for 7 libraries: VAST.RTMP, VAST.RTSP, VAST.SRT, VAST.HLS, VAST.File.ISO, VAST.Network, and VAST.Image:

• VAST.RTMP — 2500 (full price)
• VAST.RTSP — 2500 (full price)
• VAST.SRT — 0.8 × 2500 = 2000 (20% discount, 3rd library)
• VAST.HLS — 0.8 × 2500 = 2000 (20% discount, 4th library)
• VAST.File.ISO — 0.8 × 2500 = 2000 (20% discount, 5th library)
• VAST.Network — 0.6 × 2500 = 1500 (40% discount, 6th library)
• VAST.Image — 0.6 × 2500 = 1500 (40% discount, 7th library)

Total: 2 × 2500 + 3 × 2000 + 2 × 1500 = $14000 USD. Capture and Playback sources are included free. All platforms covered.

Example 3: Cross-Codebase Discount

You already own .NET sources for VAST.RTMP, VAST.RTSP, and VAST.HLS (3 libraries). Now you want the same 3 libraries in C++. The 50% cross-codebase discount applies to the entire second purchase:

• VAST.RTMP (C++) — 0.5 × 2500 = 1250
• VAST.RTSP (C++) — 0.5 × 2500 = 1250
• VAST.HLS (C++) — 0.5 × 2500 = 1250

Total for C++ sources: 3 × 1250 = $3750 USD. The cross-codebase discount (50%) exceeds the volume discount (20% on 3rd library), so the higher discount is applied uniformly.

Questions about licensing? Contact us to discuss the best option for your project.