vMix 29 Introduces Open Media Transport: A Big Step for Open, Low-Latency Production Workflows

vMix 29 brings a number of useful upgrades, but one of the most important additions is Open Media Transport, or OMT. Released on 27 October 2025, vMix 29 adds full support for OMT input and output, putting a new open-source video transport protocol directly into one of the most widely used live production platforms in the market.

For broadcasters, AV teams, live event producers and system integrators, this matters because OMT is not just another feature on a long release list. It is a practical step toward more open, flexible and cost-effective local network video workflows. vMix describes OMT as a new open-source protocol for sending and receiving high-quality audio and video over a gigabit LAN, with support for full 4K and frame rates above 120 fps.

What is Open Media Transport?

Open Media Transport is a free, flexible, open-source protocol for video over LAN. The project describes OMT as an open-source network protocol for high-performance, low-latency video over a local area network, designed to carry multiple high-definition audio and video feeds over a standard gigabit network without specialised hardware. Its stated design goals include being royalty-free under the MIT license, cross-platform, software-based, and ultra-fast with less than a frame of codec delay.

That makes OMT particularly interesting for production environments that want the convenience of IP video without being locked into a closed ecosystem. In other words, OMT is not only about transport quality; it is also about openness, accessibility and easier interoperability for developers and manufacturers. The official OMT site already lists vMix among its adopters.

Why OMT in vMix 29 Matters

The significance of OMT in vMix 29 is simple: it gives users another serious option for moving high-quality, low-latency video and audio across a standard network. According to the vMix release notes, OMT support in vMix 29 includes sending and receiving over gigabit LAN, full 4K and high frame rate support, and built-in fault tolerance to handle corrupt video data gracefully. vMix also says OMT supports Low, Medium and High quality presets, offering both lower and higher bandwidth options than competing protocols.

For real-world users, that opens the door to several workflow advantages. You can build multi-system production setups more easily, move feeds between machines on the same network, and choose quality settings that better match the available infrastructure and the demands of the production. In vMix’s own documentation, OMT sits alongside NDI as a way to send and receive high-quality, low-latency video and audio between supported devices on a standard gigabit-enabled network. vMix also notes that some sources can support both NDI and OMT at the same time.

A Practical Benefit: Lower CPU Overhead in Replay Workflows

One of the strongest workflow benefits mentioned by vMix is that OMT can be recorded directly into Instant Replay and MultiCorder in vMix AVI format without re-encoding, which saves CPU resources. That is especially relevant for sports, events and other replay-heavy productions where system overhead matters.

This is where OMT becomes more than a transport protocol on paper. If a feed can move over the network and be recorded for replay without adding unnecessary re-encoding load, operators can run more efficiently and potentially get more out of existing hardware. In busy multi-camera productions, those gains can be meaningful.

What Kind of Bandwidth Are We Talking About?

OMT is designed for local networks, and the official project documentation provides example bandwidth figures for different resolutions and quality levels.

• 1080p30: approximately 43 Mbps on Low, 100 Mbps on Medium and 130 Mbps on High.
• 2160p60: approximately 200 Mbps on Low, 300 Mbps on Medium and 600 Mbps on High.

Those numbers make two things clear. First, OMT is built for quality and low latency on proper local network infrastructure, not for uncontrolled internet delivery. Second, users can make practical quality-versus-bandwidth decisions depending on whether the priority is density, image quality or network headroom. That flexibility is one of the reasons OMT is worth watching.

A More Open Future for LAN Video

What makes this release especially interesting is the broader direction it suggests. OMT is not positioned as a proprietary island. The project is open source, cross-platform and already supported by a growing ecosystem. The OMT organisation provides documentation and downloads, while vMix integrates the protocol directly into its production environment.

For the industry, that is a welcome development. Open protocols can help lower barriers for innovation, make integrations easier, and give end users more choice when designing systems. For vMix users, OMT in version 29 is a sign that professional live production can continue to become both more powerful and more open at the same time.

Final Thoughts

vMix 29 includes plenty of useful updates, but OMT is arguably one of the most strategically important. It gives users a modern, open-source transport option for high-quality, low-latency production over standard gigabit networks, with support for 4K, high frame rates, flexible quality presets and CPU-saving replay workflows.

For anyone building IP-based production environments, this is a release worth paying attention to. OMT may still be early compared with more established workflows, but with vMix 29 now fully supporting it, the protocol has taken a significant step forward into mainstream live production.