Cut, key and record the whole show at 59.94.
A Windows live-production switcher with designed multicam layouts, animated graphics, ISO recording and a vMix-compatible API. Available now, free during early access. Sign in to download.

How a show runs
Three workspaces carry a live show: switch the pictures, play the graphics, feed every destination. Each one is a click or a number key away.
- On air · Switch
Preview it, take it, move on.
Preview on the left, program on the right, every source as a tile with live tally. The same bin fires graphics, so one operator can run a conference alone.
- 1 to 9 preview, Space cuts, Enter runs the transition
- Cut, mix, dip, push, slide, zoom, wipes and graphic stingers
- Manual T-bar, or a MIDI fader mapped to it

- Preview · Graphics
Graphics that keep up with the room.
Take a Look and the bug, strap and crawl build in on their own timing. Retype a name in a pinned field and it changes on air, mid-animation.
- Show variables such as
{$session}fill every graphic at once - Preview overlay while you edit, program untouched
- Auto-out timers and countdowns per graphic

- Show variables such as
- Next · Outputs
Stream, record and feed the venue.
Each output chooses program or clean feed and its own audio bus, so the stream gets graphics and the IMAG screens don't.
- RTMP/RTMPS and SRT; streams at the same bitrate share one encoder
- NDI® out, and a virtual camera for Zoom on Windows 11
- Program and ISO recording, with alerts when you're live without a recording or the disk runs low

A graphics engine, not a titler.
Design on a timeline, theme it once, feed it from a spreadsheet. Everything renders inside the switcher, so there is no second machine or browser source to keep in sync.

Timeline designer
Boxes, text, images, lines and video boxes, each with its own in and out. Loops for tickers and carousels; plates that resize to the name and collapse empty fields.
Themes and Looks
A theme sets colours, fonts and corner radius for every graphic at once. A Look takes a bug, a strap and a crawl in together, staggered to the millisecond.
Variables and pins
Type {$room} once and it fills every graphic that uses it. Pin the fields you change all show to a quick-edit strip above the preview.
Data-bound supers
Point a lower third at an Excel or CSV file or a Google Sheets link, bind fields to columns and step through rows on air. Timers and countdowns bind the same way.

Twelve show packages to start from
Each ships a theme, its graphics, a stinger and matching layouts. Rendered by the engine.











Multicam layouts that are still inputs.
Pick a designed layout, drop cameras into its boxes, and it becomes input 7 like anything else: preview it, transition to it, record it on its own ISO. There are 47 designed layouts to start from.






Boxes move, not cut
Swap two sources live and the boxes travel to their new places. Merge carries a box from one layout into the next.
Framed by your theme
Backgrounds, frames and name tags are graphics on the same timeline, so they follow the show's theme like every other plate. Eight overlay channels handle picture-in-picture on top.
Plugs into the rack you already have.
Every source and every destination runs as its own pipeline, so a feed that fails shows as no signal on its tile and program keeps running.
In
- NDI®
- Any source on the network, by name
- SRT, RTMP, RTSP, HLS
- Contribution feeds and IP cameras. SRT, RTSP and HLS not tested on hardware yet
- DeckLink
- SDI and HDMI capture, not tested on hardware yet
- Webcams and capture cards
- USB and HDMI through Media Foundation
- Browser guests
- WebRTC, no install, 8 slots with mix-minus and tally
- Media, stills and audio
- Looping files, images up to 4K, interface channels
Out
- RTMP/RTMPS and SRT
- Shared encoders when bitrates match
- Program and ISO recording
- MKV while live, MP4 on a clean stop
- FCP XML timeline
- Every cut marked, ready for the edit
- NDI® out
- Program or clean feed per output. DeckLink SDI playout not tested on hardware yet
- Virtual camera
- Program as a camera in Zoom on Windows 11, after a one-time install
- Fullscreen and multiview
- Confidence monitors and a director's wall
Control
- vMix-compatible API
- HTTP and TCP, with tally subscription
- Stream Deck and Companion
- Through Companion's vMix module
- MIDI surfaces
- Learn mode for buttons, faders and the T-bar; not tested on hardware yet
- Web control
- Any browser on the network, optional
- Roles and operators
- Seven built-in roles, name and PIN sign-in, an audit log
Works with
- Headroom
- PTZ camera control, docked in the PTZ tab
- Zoom
- NDI in for panelists, virtual camera out on Windows 11
- YouTube and RTMP services
- RTMP and RTMPS streams
Built for the show that can't stop.
- A bad source stays a bad sourceEach input is its own pipeline. A camera that drops shows as no signal on its tile; program keeps running.
- Crashes recover where you wereA supervisor restarts the engine and puts program, preview and running outputs back.
- Recordings are written crash-safeFiles are written as MKV while live and remuxed to MP4 on a clean stop.
- 59.94 means 60000/1001An in-process frame hub feeds program, and recordings are timed at exact 60000/1001 rather than a rounded 60.
59.94 is 60000/1001, not 60. Treat it as 60 and picture slides 3.6 seconds an hour away from the wall clock and the audio; drop-frame numbering keeps timecode on time.
<!-- Final Cut Pro 7 XML, the format Premiere Pro and Resolve import --> <sequence> <name>show - 2026-10-03 14-26-11</name> <duration>299</duration> <rate> <timebase>60</timebase> <ntsc>TRUE</ntsc> <!-- 60000/1001 --> </rate> <marker> <name>SPEAKER + SLIDES</name> <comment>On program at start</comment> <in>0</in> </marker> <clipitem> <name>show - Program master - 2026-10-03 14-26-11.mp4</name> <start>0</start><end>299</end> </clipitem> … </sequence>
Bring your vMix show with you.
Open your .vmix project and Tally rebuilds it: input numbers are kept, layered inputs become layouts, and a report lists any device it couldn't find. Your Companion pages keep pressing the same buttons.
- Import the projectInputs keep their numbers, so muscle memory and button maps still line up.
- Point Companion at TallyThe vMix module talks to Tally on the same HTTP and TCP ports. Stream Decks and vMix tally lights work unchanged.
- Run one at a timeBecause Tally answers on vMix's ports, close vMix before you start Tally on the same machine.
# Cut input 2 straight to program curl "http://127.0.0.1:8088/api/?Function=CutDirect&Input=2" # Update a lower third while it's on air curl "http://127.0.0.1:8088/api/?Function=SetText\ &Input=Speaker%20strap&SelectedName=name.Text&Value=Dr.%20Okonkwo" # Subscribe to tally over TCP SUBSCRIBE TALLY
PreviewInputCutCutDirectFadeMergeStingerZoomSlideWipeOverlayInput1-5SetTextSetVolumeAudioAutoOnAudioAutoOffSoloStartRecordingStartStreamingScriptStartQuestions from the booth
Straight answers, including what isn't finished yet.
What do I need to run it?
A Windows 10 or 11 PC (x64). Tally Studio runs from a folder you unzip, with its own GStreamer runtime; NDI® sources and outputs may need the NDI runtime installed. H.264 uses NVENC, Intel Quick Sync or Windows Media Foundation, whichever the machine has. The virtual camera needs Windows 11.
Do I need an account or an internet connection?
No. Tally Studio is a desktop program first. Control from other browsers on the network and multiple operators with roles are optional layers you switch on when you want them.
Will my Stream Deck and Companion setup work?
Yes, through Companion's vMix module. Tally Studio answers on vMix's HTTP and TCP ports, so Stream Decks and vMix tally lights work unchanged. Because it uses the same ports, close vMix before starting Tally Studio on the same machine.
How do remote guests join?
From a browser link, with nothing to install. There are eight guest slots, each with its own mix-minus, a program video return and tally on the guest's screen. On the local network it just works; for guests outside it you provide the tunnel or port forward, and a TURN server for strict networks.
How do I get Tally into a Zoom call?
On Windows 11, add a Virtual camera output and pick it as the camera in Zoom. It needs a one-time install. Panelists come back in over NDI.
Can more than one person run the show?
Yes. Any browser on the network can open the controls, and seven built-in roles decide who can do what. A camera operator, for example, can preview but never take. Operators sign in with a name and PIN, and commands go to an audit log.
What isn't finished yet?
DeckLink capture and playout, SRT, RTSP and HLS inputs and SRT output are written but haven't been tested on hardware. Remote guests over the open internet haven't been tested either.
There is no installer yet: the app is a folder you unzip. Replay audio is muted below 95% speed.
When can I get it?
Now, free during early access. Sign in with your Mantaglow account and use Download for Windows.
Run your next show on Tally.
Tally Studio is available for Windows 10 and 11, free during early access. It runs from a folder you unzip. Sign in to Mantaglow to download it; the app itself needs no account.
- Requires
- Windows 10 x64
- Download
- Zip, 137 MB · version 0.2.0 · 2026-10-04
- Windows warning
- The app isn't code-signed yet, so Windows SmartScreen may stop it the first time. Choose More info, then Run anyway.
- SHA-256
- 29078bbf1d731d4bfc5d09016262baad6a13fcd625f8432dce48f8a882be8a6d