FlowCaster software provides a secure connection from your creative software to a local monitor, no matter where the software or the monitor is.  FlowCaster lets you keep your creative software and media in your facility or cloud, while allowing your editors and artists working remotely to get the pixel perfect display they need to create their magic.  FlowCaster provides a direct plugin for most creative software, and bridging software to share any other software they need.  FlowCaster supports transport via the Secure Reliable Transport (SRT) protocol, with full end to end encryption, low latency and excellent error recovery.  FlowCaster also supports UDP, RTP, RTMP and WebRTC for alternate workflow sharing.  Inside the secure pipe are up to 32 channels of high quality audio and your choice of lightly compressed video, using h.264, h.264/HEVC or JPEG-2000 up to 16 bits per pixel component.  SDR and HDR/HLG signals are supported, as well as alternate color spaces like Rec 709, BT 2020 and P3.  Any video resolution and frame rate is supported, and quality settings allow for even low bandwidth connections to take advantage of FlowCaster. 


FlowCaster 90 second overview

Live Edit Review

Use FlowCaster on the site for real time group review of edit sessions anywhere in the world, without rendering or uploading your media to a server! receives audio/video/captions/time code from the editor's output in real time, while providing a shared area of talk, webcam, commenting, and collaborative drawing, all time code locked to your edit.  Changes can be made in real time, or noted in the comments and drawing, and saved for later retrieval.  All the comments and drawings can be loaded as markers back into Premiere, Media Composer, Resolve and many others.  With Premiere, our custom panel provides a sync locked output image with overlays and comments, to allow the editor to see the required changes, without leaving Premiere.  Full integration with Frame.IO is also supported via fioxml files. See more Live Edit Review.

flowcaster live edit review

Live Event Review

The FlowCaster Live Event Review captures SDI or IP signals simultaneously as high quality MXF files and as time code matched proxy MP4s. The collaborative review site can use the proxies in real time, while still recording, to log and mark up the live event, or any part of the event that has already occurred. The proxy markers and all the collaborative drawings simultaneously show up in a panel in Premiere, or in Avid Interplay, for the editor to use to work with the high resolution, edit while capture, MXFs. The editor can then use the high resolution MXF to edit clips and packages based on the input of the group on to be sent out for broadcast and delivery. See more Live Event Review.

flowcaster live event review

Synchronous Collaborative Review

In a synchronous collaborative review workflow, the operator selects a proxy file/timeline from any network storage that is available to all participants and begins a session. All participants join the session. Any of the participants can play, pause, and seek the media, and commands will be duplicated to everyone in the session's players, so that they all remain in sync for everyone. As they work through the material, everyone can comment, add notes, emoji, and drawings collaboratively, seeing everyone else's feedback as well. The session can be saved and loaded into Adobe/Avid etc. By using this method, rather than the Live Edit Review method, creatives can work together to make decisions without tying up an editor to drive the session, and more efficiently realize their vision. See more Synchronous Collaborative Review.

flowcaster synchronous review

Asynchronous Collaborative Review

Any individual, at any time, can load a file session into and add comments, emoji, and drawings with time code accurate precision. Other stakeholders can join the session, or load the session data at a later date to add their comments and creative decisions. Once the session is complete, it can be saved out for the next stakeholder, or loaded into a new session, or directly into an Adobe or Avid editor, to implement the changes discussed in the session. See more Asynchronous Collaborative Review.

flowcaster asynchronous review

Work from home/cloud/remote monitoring

Shared desktop software and online conference sites are great tools for discussing a project. Unfortunately the poor quality of the compressed/low bit rate/random frame rate output signal make them a poor choice for editing review. With FlowCaster, audio/video is transported separately from the desktop sharing, using low latency/high quality compression, with the project frame rate. This gives you the ability to share a session online at a quality similar to that of a hardware output to an independent monitor. FlowCaster also supports HDR/HLG/WCG, any video resolution, up to 32 channels of high quality audio and ancillary data including closed captions, active format description and v-chip information.

Production team sharing/collaboration

There are a number of ways FlowCaster's audio/video and desktops can be shared to a group for collaboration:

  • SRT MultiCast or Haivision Gateway - maintain direct control of encrypted feeds by using SRT to all the collaborators.  With the gateway, different users can be given different passwords and address/ports that can be fixed to a user's IP address for further security
  • RTMP - send your output and desktops to any RTMP compatible server like twitch/youtube/facebook, and use the server's tools to share live audio/video, host chats and handle authentication
  • WebRTC - use any WebRTC compatible server, to support live A/V chat, authentication and text chat for one on one or multiuser collaboration

Here is a page with more detailed information on Using IP video streaming.

Cloud production or capture feed

Using SRT, signals from your creative software (Adobe/Avid/Assimilate/DaVinci/etc.) or from baseband feeds (SDI, HDMI, NDI, IP) can be sent directly to the cloud and captured to MXF, MOV, AVI, MP4 or others by the FlowCaster Server.  Optionally, a proxy file can also be generated.  All FlowCaster Server capture files support edit while record and playback while record, for local clipping or editing in Adobe Premiere.  Signals can also be sent from the cloud, from Adobe/Avid/DaVinci/FlowCaster Server via SRT to be played locally as SDI or HDMI using a supported A/V device (AJA, Bluefish444, Blackmagic, Matrox).

IP format conversion

The FlowCaster Server can also be used to convert UDP, RTP, NDI and SRT to a new UDP, RTP, NDI or SRT stream.  The server supports both re-wrapping of the compressed data and transcoding of the signal to a new compression type.  As well as IP to IP, both baseband (SDI/HDMI) to IP and IP to baseband are also supported.

Cloud to cloud

FlowCaster supports cloud to cloud transmission.  Both compressed, via RTP, UDP and SRT, and uncompressed transports are supported.  FlowCaster also has the ability to read and write directly from cloud object storage, like Amazon's S3 storage.  File mode may also be used for guaranteed copies of media to be moved from one point to another.


FlowCaster includes a native transmitter plugin for Adobe Premiere, After Effects and other supported Adobe software. This allows FlowCaster to appear as a physical output and get the highest quality audio and video to send from Adobe to the remote player. This enables one, or more, remote viewers to see exactly what would normally be on the local monitor.

You can provide additional Drastic related functionality within your Adobe editing software by installing the free FlowCaster Live Review Panel. This is an Adobe CEP Extension panel that lets you view your Flowcaster session directly within the editor. Details including how to set up and use the FlowCaster Live Review Panel can be found here.

There is a Quick Start guide for Adobe Premiere available here.


FlowCaster includes an Avid OpenIO device that acts like a hardware output for your Media Composer and sends that signal to your remote viewer(s). This includes high frame rate/high bit rate video, up to 32 channels of audio and ancillary metadata including closed captions. FlowCaster can work with an Avid Media Composer cloud instance to provide a true audio/video monitor on your desk from the cloud.

There is a Quick Start guide for Avid MediaComposer available here.


FlowCaster includes an Assimilate direct and OpenFX monitor plugin, allowing monitoring of any software that supports OpenFX. For Assimilate SCRATCH, high quality audio and video monitoring is supported. For OpenFX software, like DaVinci Resolve, only high quality video monitoring is supported, due to the limitations of the OpenFX standard. In both cases, RGB, as well as YCbCr, signals are supported with up to 12 bits per component, using JPEG2000, or 10 bits per component, using HEVC.


FlowCaster includes a standalone application that can capture a local source, along with the creative tools output from: 

  • SMPTE 2110 via the 2100 Rivermax plugin
  • SDI/HDMI with a supported device
    • AJA, Bluefish444, Blackmagic, Matrox
    • USB-2/USB-3/Camera UVC capture devices
    • Virtual camera sources
  • Newtek® NDI
  • A Desktop

This allows FlowCaster to share the editor itself, via desktop sharing, or other software that does not directly support FlowCaster, via NDI, SDI/HDMI, or SMPTE 2110 capture.  Along with professional audio/video boards from AJA, Bluefish444, Blackmagic and Matrox, FlowCaster also supports USB-2/3 capture devices for low cost SDI and HDMI capture.

FlowCaster Rivermax Software 2110 for Adobe, Avid and Resolve

FlowCaster supports a wide variety of network transports.  The highest quality transport is SRT, which can transmit full HDR at up to 16 bits per pixel.  There are a number of ways to receive and view the compressed data.  Each player will have varying support for the available formats.


 videoqc logo teeny   

videoQC - Drastic's videoQC provides playback for SRT, RTP and UDP, and supports all the transports FlowCaster provides, from H.264 and HEVC to full 16 bit JPEG-2000.  It also supports starting streams from a web browser using the videoqc:// url. It is available on Windows, macOS and Linux, and provides support for

  • Full screen output
  • Optional SDI/HDMI output with AJA, Bluefish444, Blackmagic DeckLink, and Matrox boards
  • Waveform/Vectorscope/Gamut/Audio scopes and loudness monitoring
  • Up to 32 channels of audio
  • Closed caption (608, 708, OP-47) decoding and display
vlc logo teeny   VLC - VLC is a free player from VideoLAN that supports basic h.264/h.265 in UDP, RTP and SRT with two selectable audio channels and a full screen mode.
obs logo teeny   OBS - The Open Broadcaster Software supports receiving SRT streams with h.264 compression and two channels of audio.  It can be used for monitoring, compositing with other signals and re-transmission.

Apple iPad/iPhone

flowcaster logo teeny     FlowCaster Player - The FlowCaster player supports h.264 and HEVC using the SRT, RTMP or RIST protocols.  It can be instantiated with the videoqc:// url protocol, just like videoQC.     itunes flowcaster tv download 
 haivision logo teeny    Haivision Pro Player - The Haivision Pro Player is a free player for Apple iPhones that can play back h.264 and HEVC, along with a selected pair of audio channels from the available audio channels.  It supports SRT.  

Apple TV

flowcaster logo teeny     FlowCaster Player - The FlowCaster player supports h.264 and HEVC using the SRT, RTMP or RIST protocols.  It can be instantiated with the videoqc:// url protocol, just like videoQC.  itunes flowcaster tv download 

Android Phone/Tablet/TV

flowcaster logo teeny     FlowCaster Player - The FlowCaster player supports h.264 and HEVC using the SRT, RTMP or RIST protocols.  It can be instantiated with the videoqc:// url protocol, just like videoQC.  google play 
 haivision logo teeny     Haivision Pro Player - The Haivision Pro Player is a free player for Apple iPhones that can play back h.264 and HEVC, along with a selected pair of audio channels from the available audio channels.  It supports SRT.  

Online Redistribution

youtubelogo teeny,, and many other sites can redistribute FlowCaster's RTMP h.264 signal with two channels of audio. 
 wowza logo teeny      Wowza - Wowza supports both RTMP and SRT streams and can create a number of standard webcasting standards from them.

Supported Sources

  • Adobe - Premiere, After Effects
  • Avid - Media Composer, NewsCutter
  • Assimilate - SCRATCH family
  • Blackmagic - DaVinci Resolve
  • OpenFX - Windows, MacOS and Linux
  • Desktop - Any full screen

For setup details please see the following page on Using IP video streaming.

  • NDI <network local> - (Network Device Interface) Any NDI audio/video source
  • HDMI/SDI - requires an AJA, Bluefish444, Matrox, Blackmagic or USB capture device
  • SMPTE 2110/2022 - requires an optional license for Rivermax and Mellanox NIC
  • IP <one to one or many> - (internet protocol)
    • UDP (User Datagram Protocol)
    • RTP (Real-time Transport Protocol)
  • RTMP <one to many> - (Real-Time Messaging Protocol). See the FlowCaster Quick Start guide for RTMP
    •, etc.
  • WebRTC <one to one or many> - (Web Real-Time Communication)
  • WHIP <one to one or many> - (WebRTC-HTTP ingestion protocol)
  • SRT <one to one> - (Secure Reliable Transport). See the FlowCaster Quick Start guide for SRT
  • RIST <one to one> - (Reliable Internet Stream Transport)
  • CDI <cloud SDI> - (Amazon Uncompressed)

Supported Targets

  • 8, 10, 12 or 16 bit per pixel video
  • 16, 24 or 32 bit audio, up to 32 channels
  • Uncompressed, h.264, h.264/HEVC or JPEG-2000 compression
  • SRT, RIST, WebRTC, Whip, UDP, RTP or NDI transports
  • SRT, RIST and WebRTC/Whip provide low latency, with end to end encryption
  • Cloud - Millicast, Haivision Gateway,
  • Windows - VLC, OBS, videoQC
  • macOS - VLC, OBS, videoQC
  • Linux - VLC, OBS, videoQC
  • iOS - FlowCaster Player, Haivision Player
  • Apple TV - FlowCaster Player
  • Android - FlowCaster Player, Haivision Player
  • Social - Twitch, YouTube, Facebook, etc.
  • Any target may be watermarked with an alpha blended PNG image

Download FlowCaster

End User License Agreement International Canadian

Available for Windows 7 or greater, CentOS/RedHat 7.4-7.8, or macOS Version 10.14 Mojave and greater. Please note, Apple's M1 devices are not currently supported.

Download FlowCaster Version 7 for Windows 64

Win LogoAdobe, Avid, Assimilate, Resolve (OFX), Bridge

Download FlowCaster Version 7.0 for macOS
Mac LogoAdobe, Avid, Assimilate, Resolve (OFX), Bridge
Download FlowCaster Version 7.0 for Centos/RedHat

tux LogoResolve (OFX), Bridge

FlowCaster installs in demo mode, with limited functionality. To unlock the full feature set of the software you will need at least a temp license. Please generate a site code and send it to us at: We will send back a site key which will remove the demo limitations. Prior to purchase, the key will be temporary. There is more detailed information on the licensing process here:

Download FlowCaster Players