b3LAB – PortalOFX+
Make Resolve realtime.
Pull a live signal into a Resolve or Fusion node, grade and composite it, then push the result back out — both directions, many parallel routes, all inside the host.
▸ Architecture, license & bundles
Three separate .ofx.bundle packages with distinct plugin IDs — they all coexist in the same OFX-host. Pro: 4 plugins (Syphon/Spout IN/OUT, NDI IN/OUT). OMT-Bundle (separate): 2 plugins (OMT IN/OUT, beta). Lite (free): 2 receive-only plugins, distinct IDs — installable alongside Pro without conflict. Any number of plugin instances run in parallel (InstanceSafe + SingleInstance=0). Pipe results to TouchDesigner, MadMapper, OBS, VDMX, b3WebCam+ (system-wide virtual camera for Zoom / Teams), or any NDI/Spout/OMT receiver. License: 3-level waterfall (cert-pinned VPS → Gumroad → HMAC-cache), 72h offline grace, HWID-bound, 2 active installs at a time. One license activates on macOS or Windows.
// EVERYTHING IT DOES
One node. Every route.
Tap a tile to open it. Six plugins, one license — the full technical detail opens in a focused view.
Receive Syphon/Spout frames from any app, then send the graded node output straight back out as a server. Metal-backed (macOS) / Spout 2 (Windows), minimal latency, no frame export.
For: TouchDesigner · Resolume · MadMapper · VDMX pipelines.
Receive NDI from anywhere on the network and publish Resolve/Scratch clips as an NDI source. Embeds Resolve timecode + colorspace metadata; NDI Audio Out on macOS.
For: Broadcast, multi-room, vMix / OBS switching.
A royalty-free NDI alternative with the same low-latency workflow — source picker, lifecycle, broadcast tagging. OMT-OUT lip-sync + audio at parity with NDI-OUT.
For: Zero-license networked routing · vMix / Vizrt.
Output-delay 0–15 frames + A/V offset ±500 ms (sub-frame). Kills the classic NDI/OMT audio drift with no sidecar app and no hardware. Opt-in, default off.
For: Anyone sending audio over NDI or OMT.
The whole point: a live signal becomes a clip inside the node graph — grade it, composite it, add OFX — and the result streams straight back out. No render, no capture loop.
For: Stage · tour · show colour, live.
Every plugin is InstanceSafe with SingleInstance=0 — run any number of IN and OUT instances at once, all three transports in parallel in one session.
For: Complex multi-source finishing graphs.
CoreGraphics-rendered overlay applied to every OUT plugin (Syphon/NDI/OMT). Use-Alpha handling (BGRA/BGRX) trims ~25% bandwidth when alpha isn’t needed.
For: Review copies · branded feeds.
When an upstream source drops, IN plugins hold on Freeze / Black / Testcard instead of tearing the graph. Live health metrics (frames, drops, bandwidth, clients) sit in the UI.
For: Unattended · broadcast reliability.
▸ Supported hosts & compatibility
Supported Hosts
Host A
DaVinci Resolve / Resolve Studio
Studio version required. OFX plugins do not render in the free version.
Host B
Fusion Studio
Standalone Fusion node-based compositor. Full Syphon/Spout/NDI/OMT support.
Host C
Assimilate Scratch / LiveFX
Full Syphon and NDI ingest in live and finishing workflows.
Host D · Mac EA
Nuke Studio 17
Tested in early access on macOS. Windows compatibility not yet validated.
Host E · Mac EA
Autodesk Flame
Tested in early access on macOS. Windows compatibility not yet validated.
// WHICH ONE
PortalOFX+ or b3WebCam+?
Both speak Syphon, NDI and OMT — but they solve different problems. The one-line rule:
Route signals into your grade → PortalOFX+
Pull a live Syphon/NDI/OMT source into a Resolve or Fusion node, grade and composite it, then push the result back out — both directions, many parallel routes, all inside the host. b3WebCam+ cannot do this.
Signals around the host → b3WebCam+
Turn any input into a system-wide virtual camera, convert between Syphon/NDI/OMT/SDI, stream-switch, and push a Resolve/Premiere timeline out to a webcam for live review. Its OFX/Adobe path is output-only — it does not route signals into the host.
Need both? → Complete bundle
Routing inside the grade and the webcam/convert layer? The Complete bundle has all four tools — including PortalOFX+ and b3WebCam+ — for less than buying them separately.
// SHOP
Get PortalOFX+
All licenses include the plugin binary, setup documentation, and email support within the defined scope. Purchases delivered via Gumroad.
€0
Receive-only OFX edition — pull Syphon and NDI into Resolve as a regular clip
What's included
- Syphon-IN [Lite] — any local Syphon server (Resolume, MadMapper, TouchDesigner, OBS, Notch, Modul8, …) · Mac GPU-direct
- NDI-IN [Lite] — any source on the local network (video only, automatic discovery)
- Resolve Color page → Effects Library → OpenFX → b3LAB
- macOS 12.4+ · Universal Binary (Intel + Apple Silicon)
- No license, no activation, no telemetry · runs fully offline
Not included in Lite
- Syphon-OUT · NDI-OUT (sending is Pro)
- OMT in / out (both directions)
- NDI Audio receive · Lip-Sync (A/V offset compensation)
- Use-Alpha (BGRA/BGRX) · H/V-Flip · Embed-Timecode · Color-Space tagging
- Windows / Spout build
- Notarized + Hardened Runtime · priority support
Free / pay-what-you-want via Gumroad. Community-supported (no SLA). Coexists with Pro — distinct plugin IDs, install both side-by-side without conflict.
Get PortalOFX+ Lite →€79
For early adopters and technically confident users
- 2 seats · macOS or Windows (2 active installations)
- macOS: Syphon IN/OUT + NDI IN/OUT · Windows: Spout IN/OUT + NDI IN/OUT
- 12 months of updates
- Setup documentation
- Email support (standard scope)
Early Access — product is functional and actively evolving. Known limits and supported environments are documented. Early Access pricing ends 2026-08-01.
Buy Early Access →▸ PortalOFX+ · in action — early preview, not the final build.
★ Known stable path
Solo-studio Early Access · coded for max compatibility on the host matrix below · feedback welcome → [email protected]
- OS / hardware: macOS 15.x (Sequoia 15.7.4) on Apple Silicon · Windows 10/11 x64
- Tested with: DaVinci Resolve 19+ (free) and Resolve Studio · Fusion Studio · Assimilate Scratch / LiveFX 9.x+
- Recommended first workflow: Resolume / TouchDesigner publishes Syphon → PortalOFX+ Syphon-IN on a Resolve color node → grade live, send back out as NDI
- Top 3 limits: OFX host must be running · 1 license = 2 active installs / 2 Macs (macOS or Windows, device-switch on demand) · IN-plugins are video-only (no audio receive)
// BUNDLES
Choose the signal chain you need.
Each bundle is a workflow configuration — not just a discount. Pick the stack that matches how your signals move. One-time purchase, no subscription.
Control + Presence
PulseOSC+ Personal + b3WebCam+ Early Access. Pricing soon. For audio-reactive performance, streaming, teaching, and remote presence.
Routing + Control
PortalOFX+ Early Access + PulseOSC+ Personal. Pricing soon. Audio-driven control + live visual routing in one stack.
The full chain
PortalOFX+ EA + PulseOSC+ EA + b3WebCam+ EA + BatchForge+ EA. Pricing soon. The full b3LAB Creative Signal Network.
// KNOWN LIMITS
What this is not.
Every b3LAB tool has a clear scope. Knowing the limits is part of the tool.
▸ Show all known limits
- Tested with macOS 15 (Sequoia 15.7.4) · macOS Tahoe · Universal Binary supports Intel; Intel Macs not officially tested.
- Tested with Windows 10 x64 (latest Resolve beta) · Windows 11: should work · ARM Windows: not tested.
- Syphon plugins (macOS only) · Spout plugins (Windows only) · NDI IN/OUT available on both platforms.
- 1 license = 2 active installations / 2 Macs — macOS or Windows, not both simultaneously.
- Requires DaVinci Resolve 19+ (free) or Resolve Studio, Fusion Studio, or Assimilate Scratch 9.x+. PortalOFX+ loads in both the free and paid Resolve editions.
- DaVinci Resolve render cache: with the background Render Cache on (Playback ▸ Render Cache), Resolve keeps playing the already-cached output and can send it instead of the current live render until the cache catches up — switch the render cache off for true real-time routing. Flip-side bonus: a still-cached frame doubles as a built-in "still rendering" indicator. 😉
- Nuke Studio 17 / Autodesk Flame: tested only on macOS in early access. Windows compatibility for these hosts is not yet validated. Resolve / Resolve Studio + Fusion Studio + Scratch are the full-support hosts.
- OMT (Open Media Transport): ships in beta on macOS and Windows. Receivers/senders that support OMT are still few (vMix, Vizrt + b3LAB ecosystem). Workflow is identical to NDI: pick source, enable output. Stable release scheduled with v1.2.x.
- Multi-stream same-protocol on Windows: Resolve's Efficiency Algorithm skips fully-occluded layers — if you stack two NDI or Spout layers and the top one fully covers the bottom, only one stream goes out. Set the top layer's opacity to 99.99% to keep both layers active and both streams sending.
- Disable "Alpha under Plugin" in the Inspector (macOS + Windows). With this option active, Resolve becomes noticeably slow during playback through PortalOFX+ instances. Toggle it off in the OFX Inspector for normal performance.
- Output streams need a manual restart after project reopen. When you close and reopen a project, output plugins (Syphon OUT, Spout OUT, NDI OUT, OMT OUT) require a manual Start Output once per session.
- Micro jitter / stutter with output-delay active: under investigation. If you observe occasional small frame-timing issues, disable the output-delay parameter as a temporary workaround.
- NDI Audio Out (since v1.1.0): the NDI OUT plugin can merge Resolve's audio bus into the same NDI stream as the video. Route Resolve audio to BlackHole 2ch (or any CoreAudio input), enable Audio Out in the plugin Inspector, pick your source device. Stereo (2-channel) for v1.1.x — multi-channel planned for v1.2.x. Syphon, Spout, and OMT protocols have no audio path by design.
- One Syphon or NDI source per plugin instance.
- 4K signal tested. Higher resolutions untested.
- Syphon requires the source app on the same machine. NDI works cross-machine on the local network.
- NDI sends as full-bandwidth uncompressed BGRX. NDI HX2/HX3 codec path is on the roadmap.
- Colorspace tagging is embedded in NDI per-frame metadata only. Syphon has no standard colorspace field — receivers ignore tagging there.
- Demo mode is fully functional but watermarks the output and reduces framerate. License key (Gumroad) unlocks all 4 plugins.
// COMPATIBILITY
Tested with.
- OS: macOS 15 (Sequoia 15.7.4) · Windows 10 x64 (tested) · macOS Tahoe · Windows 11: should work · ARM Windows: not tested
- Distribution: macOS: Notarized DMG →
/Library/OFX/Plugins/b3LAB_PortalOFX+.ofx.bundle· Hardened Runtime · Developer ID signed · Apple-stapled · Windows:PortalOFX-WIN.zip→C:\Program Files\Common Files\OFX\Plugins\ - Hosts (full support): DaVinci Resolve 19+ (free) and Resolve Studio · Fusion Studio · Assimilate Scratch 9.x+
- Hosts (early access, Mac only): Nuke Studio 17 · Autodesk Flame — Windows compatibility for these hosts not yet validated
- Plugins: macOS — Syphon IN, Syphon OUT, NDI IN, NDI OUT, OMT IN, OMT OUT (beta) · Windows — Spout IN, Spout OUT, NDI IN, NDI OUT, OMT IN, OMT OUT (beta)
- Source: macOS: Syphon (Metal-backed, embedded) · Windows: Spout 2 (DirectX-backed, embedded) · NDI 5/6 SDK (lazy-loaded, optional runtime — both platforms) · OMT (open-source, beta — both platforms)
- Audio: NDI Audio Out (macOS, since v1.1.0) — Resolve audio merged into the same NDI stream via CoreAudio source picker (stereo 2-channel, multi-channel planned for v1.2.x). Syphon, Spout, OMT have no audio path.
- Signal: RGB · RGBA · up to 4K (BGRX FourCC for Scratch compatibility)
- Build: broadcast tagging (NDI timecode + colorspace), health metrics, explicit Start/Stop lifecycle, source-loss fallback (Freeze / Black / Testcard)
// CONTACT
Get in touch
// LEGAL & TERMS
Legal
▸ Legal & policies — license, updates, refund, support, trial, third-party, trademarks, impressum, privacy, accessibility
PortalOFX+ is licensed, not sold. You receive a non-exclusive, non-transferable license to install and use the software according to your purchased license tier.
Permitted: commercial use in creative and production workflows.
Not permitted: resale, sublicensing, redistribution of the plugin, removing attribution, or misrepresenting the plugin as official software from Blackmagic Design, Assimilate, or any third party.
Provided "as is." No guarantee of uninterrupted operation or compatibility with unsupported systems. Liability is limited to the amount paid. Full EULA: EULA - PortalOFX+ v0.1 (PDF version on request).
Purchases include updates for 12 months from date of purchase. Minor updates (bug fixes, compatibility, diagnostics) are included. Major version upgrades (new architecture, platform expansion) may require a new license or paid upgrade. Future features are goals, not guarantees.
Please review compatibility notes and known limits before purchase.
Refunds may be considered for: non-delivery, license activation failure, non-functional behavior in a clearly documented and supported environment, or accidental duplicate purchase.
Refunds are not granted for: unsupported systems or Resolve versions, third-party incompatibilities outside documented scope, change of mind after purchase, or unimplemented feature requests.
Mandatory consumer rights apply where required by law. EU statutory withdrawal: for digital products with immediate download access, the right of withdrawal expires upon download initiation, in accordance with Art. 16 m of the EU Consumer Rights Directive (§ 356 V BGB). By initiating the download, you explicitly waive the 14-day withdrawal period.
Standard support covers: installation guidance, setup clarification, basic troubleshooting, and clarification of documented behavior. It does not cover: custom pipeline consulting, feature development, debugging third-party systems, or unsupported workflow engineering.
When reporting an issue, include: OS (macOS version or Windows version), Resolve version, hardware (Apple Silicon / Intel / PC), source application, and exact reproduction steps.
No public trial or demo build is currently available. Before purchase, review the compatibility notes, feature documentation, and Early Access terms. Pre-purchase questions can be directed to [email protected].
Product: b3LAB PortalOFX+ · Publisher: b3LAB
This notice lists third-party software, SDKs, frameworks, APIs, trademarks, and optional external runtime dependencies that may be used by this product. PortalOFX+ is an independent b3LAB product. References to third-party names, frameworks, SDKs, trademarks, and file formats are for compatibility, attribution, and interoperability purposes only. No sponsorship, approval, endorsement, certification, or affiliation is implied unless explicitly stated in a signed agreement.
This notice is provided for distribution compliance and transparency. It is not legal advice.
Syphon Framework
Purpose: macOS shared-texture video frame sharing / Syphon input-output compatibility.
Copyright 2010 bangnoise (Tom Butterworth) & vade (Anton Marini). All rights reserved.
License: Simplified BSD / BSD-style license. Source / license reference: github.com/Syphon/Syphon-Framework.
Required notice: Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: (1) Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. (2) Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES.
The names "Syphon", "Syphon Project", and contributor names must not be used to endorse or promote this product without specific prior written permission. PortalOFX+ is compatible with / uses Syphon technology but is not an official Syphon Project product.
Spout
Purpose: Windows shared-texture video frame sharing / Spout input-output compatibility (Windows version only).
Copyright (c) 2014–2024 Lynn Jarvis. All rights reserved.
License: BSD-style license. Source / license reference: github.com/leadedge/Spout2.
PortalOFX+ uses Spout 2 on Windows for shared-texture frame exchange. Spout is an independent open-source project and is not affiliated with b3LAB. The name "Spout" must not be used to endorse or promote this product without specific prior written permission from the Spout project contributors.
OpenFX / OFX API
Purpose: OFX plug-in interface compatibility with supported host applications.
Copyright © OpenFX and contributors to the OpenFX project.
SPDX-License-Identifier: BSD-3-Clause. Source / license reference: github.com/AcademySoftwareFoundation/openfx.
Required notice: Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: (1) Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. (2) Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. (3) Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
DaVinci Resolve, Assimilate SCRATCH / Live FX, and other host application names are trademarks of their respective owners. Compatibility claims do not imply sponsorship, approval, certification, or endorsement.
NDI® SDK / NDI® Runtime
Purpose: Network video send/receive/discovery functionality.
NDI® is a registered trademark of Vizrt NDI AB. Official information: ndi.video.
License references: NDI SDK License Agreement · NDI licensing docs · NDI software distribution docs.
Distribution status for this build: NDI Runtime / SDK binaries are NOT bundled. NDI features require a user-installed official NDI Runtime / NDI Tools installation from ndi.video.
NDI functionality is implemented using the NDI SDK subject to the applicable NDI SDK License Agreement and documentation. b3LAB is independent and is not affiliated with, sponsored by, certified by, or endorsed by Vizrt NDI AB.
Apple System Frameworks and macOS APIs
Components may include: AVFoundation, CoreMedia, CoreVideo, CoreAudio, VideoToolbox, Metal, IOSurface, CoreImage, AppKit, SwiftUI, System Extensions, CMIO Camera Extension APIs, and related Apple platform APIs.
Provider: Apple Inc. License / terms: governed by the applicable Apple Developer Program License Agreement, Apple SDK Agreement, macOS software terms, signing/notarization requirements, and related Apple documentation.
Apple, macOS, Metal, AVFoundation, CoreMedia, CoreVideo, CoreAudio, VideoToolbox, AppKit, SwiftUI, and related names are trademarks of Apple Inc. PortalOFX+ is independent and is not endorsed by Apple.
Supported applications / interoperability names
Names such as DaVinci Resolve, Assimilate SCRATCH, Assimilate Live FX, TouchDesigner, Resolume, MadMapper, Synesthesia, OBS, Zoom, Teams, and similar product names are trademarks of their respective owners. They are mentioned only for compatibility, workflow, or interoperability context. b3LAB products are independent and are not affiliated with, sponsored by, certified by, or endorsed by those vendors unless explicitly stated in a signed agreement.
Full third-party license notices are included with each plugin download as THIRD_PARTY_NOTICES.txt — and available online: ThirdPartyNotices - portals.txt (covers OMT/libomt/libvmx · NDI · Syphon · OpenFX · host compatibility notes).
b3LAB and the b3LAB tool names (PortalOFX+, b3WebCam+, PulseOSC+, BatchForge+) are trademarks of Benjamin Mauz / b3LAB. They are independent products. PortalOFX+ and b3WebCam+ are not affiliated with or endorsed by the Syphon Authors, the Open Effects Association, Vizrt NDI AB, Blackmagic Design, Assimilate Inc., or any other third party.
The following are trademarks of their respective owners. Their mention on this website is for descriptive interoperability purposes only ("nominative fair use") and does not imply partnership, endorsement, or affiliation:
- Apple, macOS, Apple Silicon, Sonoma, Sequoia, FaceTime, Safari, Photo Booth, Metal, VideoToolbox, AudioToolbox, CoreAudio, Accelerate, ProRes — Apple Inc.
- Intel — Intel Corporation
- DaVinci Resolve, DaVinci Resolve Studio — Blackmagic Design Pty. Ltd.
- Assimilate Scratch, Scratch, LiveFX — Assimilate Inc.
- TouchDesigner — Derivative Inc.
- Resolume Arena, Resolume — Resolume B.V.
- MadMapper — 1024 architecture / Garagecube SA
- Synesthesia — Synesthesia Live Ltd.
- VDMX — Vidvox LLC
- Max — Cycling '74 / Ableton AG
- Notch — Notch Limited
- Mitti — imimot.com
- OBS, OBS Studio — OBS Project
- Zoom — Zoom Video Communications, Inc.
- Microsoft, Teams — Microsoft Corporation
- HAP — Vidvox LLC (open-source codec)
- HEVC, H.265, H.264, AVC — respective patent pool licensors (Access Advance, Via LA, MPEG LA)
- VP9, WebM — Google LLC
- Gumroad — Gumroad Inc.
- NDI — Vizrt NDI AB (registered trademark)
- Syphon — Syphon Authors (open-source)
- OpenFX, OFX — The Open Effects Association
Angaben gemäß § 5 DDG:
Benjamin Mauz · Ruländerstr. 3 · 73733 Esslingen am Neckar · Deutschland
E-Mail: [email protected]
Website: b3lab.io
Umsatzsteuer-ID gemäß § 27a UStG: DE277951151
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Controller: Benjamin Mauz · b3LAB · Ruländerstr. 3 · 73733 Esslingen am Neckar · Germany · [email protected].
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Last reviewed: 2026-04-29.