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VideoMost Server

Unified 2018
Product of the year 2017
VoIP 2016 TOP 10
VoIP Leaders TOP 10

Enterprise video conferencing with mobile messaging and content sharing.

Enable people team work from any device / any network by using powerful and complete VideoMost enterprise-grade secure communication platform.

300 video participants in a conference room with extensive collaboration tools, including docs and screen sharing, whiteboard, mobile messenger, polls and more.

Using both Scalable video coding (SVC and MUX) and traditional MCU (MIX) architecture VideoMost automatically and dynamically adjusts video quality to available network conditions and CPU utilization throughout a conference session, and provides total legacy HW (Cisco, Polycom, Avaya, etc) and Microsoft software (Outlook, Exchange, Skype) interoperability.

Explore VideoMost technical guide for more information on installing and deploying software server

Any browser,
and proprietary

SVC engine
300 people
in a conference
Presentation sharing
(BFCP/H.239) and
Collaboration tools
hardware interop
VideoMost is like Zoom, but self-hosted video conferencing server

and available for licensing at a fraction of competitors cloud prices

Enterprise Video Server

  • SFU (MUX) + MCU (MIX) architecture
  • Servers cascading / federation
  • Flexible video layouts
  • Large conference rooms
  • RTSP and RTMP broadcasting
  • Conference moderation and recording
  • TLS, SSL
  • CDN video broadcast to YouTube, Vimeo, etc.

Collaboration tools

  • Screen and app sharing
  • Presentation sharing / Slide show
  • Whiteboard
  • Mobile video messenger & Presence
  • Polls
  • File exchange
  • Handouts
  • Individual and group text chat
  • Seminar mode for Ed-tech

Total interoperability

  • SIP/H.323/XMPP
  • BFCP/H.239
  • Server REST API
  • Websocket API
  • WebRTC and Scalable video coding
  • Outlook/Exchange/AD/LDAP integration
  • Skype for Business interoperability
  • Mobile client SDK

Data flow

Cross-platform - join anywhere, from any device

  • Windows

  • Mac OSX

  • Linux

  • IOS

  • Android

  • Any browser

  • HW terminals

  • PSTN

Global standards and open protocols support

  • SIP
  • H.323
  • XMPP
  • WebRTC
  • BFCP
  • H.239
  • RTP
  • RTSP
  • TLS
  • SSL
  • RTFР
  • SRTP
  • DTLS
  • HTML5
  • H.264
  • VP8
  • G.7XX
  • WebSocket

Integration with popular open source software products and protocols

Client Applications

VideoMost Web for browser

VideoMost Space desktop app

VideoMost app for iOS

VideoMost app for Android

VideoMost is available for licensing as SDK
an all-inclusive set of media processing technologies, signaling protocols and collaboration tools to be integrated in your application or service under your brand

VideoMost SDK is video conferencing software server complete with mobile video clients working across different OS (including Android, iOS, Mac OS, Windows and Linux) and web browsers. In addition to videoconferencing a wide range of collaboration tools is available, including doc/app sharing, whiteboard, mobile messenger and more.

VideoMost SDK enables embedding group mobile video call into your app. VideoMost SDK supports both SIP and H.323 protocols for legacy video conferencing hardware interoperability.
VideoMost SDK supports both WebRTC and SVC-based clients ensuring all users get the best video quality available.

Flexible deployments

VideoMost SDK can be deployed any way to best suit your company’s needs and infrastructure requirements - on-premises, private cloud, hybrid.
VideoMost server supports users from outside your corporate LAN while ensuring security for all participants, with VPN or VideoMost Expressway. Self-hosted VideoMost platform is under your total control.

VideoMost SDK is a client-server software product. Its media processing core is VideoMost Conferencing Server that provides high-quality voice and video processing and transmission over IP networks.

Scalability of VideoMost Server

A single VideoMost server can handle up to 1000 video ports. VideoMost cluster can handle virtually unlimited number of users/ports. Typical cluster scheme is shown below.

Features List and Platforms

Enterprise Unified Communications and Video Conferencing

  • Both MUX (SFU) and MIX (MCU), for both video and voice
  • Fully-interactive videoconference, 100 participants, all participants hear / see each other
  • Interactive videoconference, 300 participants, all participants hear / see 16 participants
  • Conference scheduler
  • Invitations via email, iCalendar and Push Notifications (from inside IM)
  • Conference moderation tools
  • Handouts
  • Screen / application sharing
  • Presentation sharing
  • File exchange
  • Whiteboard
  • Polls
  • Individual and group text chat during the conference
  • Conference broadcasting via RTMP or RTSP
  • CDN video broadcast to YouTube and Vimeo, Twitch, etc.
  • Layout management during RTSP and RTMP broadcasting
  • Conference recording: audio / video / sharing separately or any combination of the above


  • Seminar mode: effective interaction between a teacher and students

VideoMost SaaS server load optimization

  • Media nodes set up for a certain user tariffs/polices
  • SaaS server load reports
  • Adjusted video quality for clients connected via low speed networks


  • Individual video layouts
  • SIP and H.323 (Polycom, Cisco, Avaya, Huawei, Yealink hardware interoperability)
  • BFCP and H.239
  • Individual MIX channels
  • List of contacts for SIP / H.323 participants

Server Cascading

  • Combine several conferences running on different servers into one conference
  • Desktop / Application sharing during cascading
  • Large meetings

Mobile instant messenger

  • SSO
  • Mobile instant messenger with videoconferencing and doc sharing
  • Security

    • TLS
    • SSL
    • UC over VPN
    • Expressway secure channel outside LAN without VPN

    Server OS support

    • Linux Debian 8, 9, 10 (64 bit)
    • Linux CentOS 6/7 (64 bit)
    • Red Hat Enterprise Linux 6/7(64 bit)

    Client OS support

    • Windows 7, 8.1, 10
    • macOS 10.12 and higher
    • iOS 9-13
    • Android 5.0-10.0
    • Linux Ubuntu 12.04 and higher
    • Red Hat Enterprise Linux 5 and higher
    • CentOS 6 and higher


    • Chrome 75 and higher
    • MS Edge
    • Firefox 75 and higher
    • Browser plug-in compatible with Internet Explorer 8, 10, 11 (32-bit and 64-bit) and Mozilla Firefox 52ESR
    • Desktop SVC application Lite for Windows / MacOS
    • Desktop WebRTC application Proton for Windows / MacOS
    • iOS app
    • Android app


    • Both proprietary SPIRIT video engine and WebRTC
    • SPIRIT H.264 scalable video codec, simultaneous transmitting of selected video layers
    • H.264/AVC Baseline Profile, H.264/AVC High Profile, H.263, H.263+
    • Hardware video acceleration
    • QoS: Differentiated Services Code Point (DSCP), type of service (ToS)
    • Рersonal and group mixing of users’ media streams
    • Video Packet Loss Concealment (Video PLC)
    • Adaptive buffering of video packets
    • Scaling Manager: on-the-fly analysis of CPU load of each endpoint and current state of communication channels (throughput, delay, packet loss, jitter) with automatic adjustment of media streams parameters
    • Support 16 simultaneous live videos on mobile (both iOS and Android)
    • Support of 1080p (Full HD) resolution
    • Combined resolution of conference windows up to Ultra HD/4K


    • Both proprietary SPIRIT voice engine and WebRTC
    • SPIRIT proprietary scalable IP-MR® voice codec: patented (no patent royalty is required), wideband, resilient to voice packet loss, adaptive, variable bit rate codec that features:
      • Bitrate scalability from 7.7 kbps to 34.5 kbps for efficient bitrate adjustment to the actual bandwidth of the communication channel
      • Voice activity detector to eliminate speech gaps (VAD) in the output of the encoder and comfort noise generator (CNG) to fill in the speech gaps in the decoder
      • Ability to work as a narrowband codec at the bitrate of 7.7 kbps and as a wideband codec at bitrates higher than 7.7 kbps
      • Packetizing of speech frames (Discontinuous transmission (DTX) mode)
      • Voice Packet Loss Concealment (Voice PLC)
    • IP-MR, G.711, G.722, G.722.1, G.723, G.726, G.728, G.729, iLBC, AMR, AMR-WB, Opus

    Microsoft Outlook/Exchange integration

    • VideoMost Add-in for MS Outlook 2013 and higher and MS Exchange 2013 and higher to schedule and manage video conferences directly from Outlook/Exchange calendars

    LDAP/ Active Directory integration

  • Authorization in VideoMost service using AD/LDAP
  • Contact lists from AD/LDAP
  • Avatars from AD/LDAP (inside IM)

Skype for Business Gateway

  • Call-in to VideoMost conference from S4B client with voice and video
  • Call-out from VideoMost conference to S4B client with voice and video


  • Serve multiple groups of users with individually privileged access to the same server


  • Server REST API
  • Websocket API
  • Client API for mobile platforms
  • JavaScript API unified for both VideoMost and WebRTC web browser clients
  • Web service API for server control

License VideoMost Server