The Connectivity Standards Alliance has released Matter 1.5.1, the latest update to the Matter specification. This incremental update delivers improvements that make it easier for device makers to build high-quality camera and doorbell products while enabling more efficient and flexible user experiences.
Matter 1.5 introduced support for cameras and video doorbells—an important milestone for the smart home ecosystem. Version 1.5.1 builds on that foundation with targeted enhancements, improving streaming efficiency, expanding media capabilities, and refining related device types such as chimes and intercoms.
More Efficient Camera Streaming
One of the most significant enhancements in Matter 1.5.1 is support for multi-stream video and audio delivery.
Previously, multiple users or services required separate streams to access a camera feed. With multi-stream capability, a camera can now deliver multiple optimized streams simultaneously.
This enables:
- A high-resolution stream for recording or storage
- A lower-resolution stream optimized for mobile viewing
- A stream suitable for video analysis or AI processing
- Multiple streams from multi-lens cameras
By structuring multiple streams within a single session, Matter 1.5.1 reduces bandwidth usage, simplifies integrations, and improves reliability.
Expanded Media Format Support
Matter 1.5.1 expands support for modern media formats used in camera systems.
Snapshot images can now use HEIC, offering better image quality with smaller file sizes compared to JPEG. This helps reduce both bandwidth and storage requirements.
For recorded video, the update adds support for HLS and DASH streaming upload using the CMAF Interface-2 profile, improving compatibility with modern cloud and media platforms.
These enhancements allow device makers to deliver high-quality viewing experiences while optimizing performance.
Improved Camera Operation And Reliability
The update also introduces improvements in camera deployment and reliability.
Enhancements to pan-tilt-zoom (PTZ) behavior provide greater flexibility, especially for installations where the camera’s “home” position is near the edge of its rotation range.
Additionally, fixes to recording configuration validation prevent invalid setups, ensuring more consistent and predictable performance across platforms.
Enhancements For Doorbells, Chimes, And Intercom Devices
Matter 1.5.1 refines device types commonly used alongside cameras.
Doorbell devices receive stability improvements and bug fixes, enhancing interoperability.
Chime devices gain new flexibility, allowing controllers to request specific chime sounds instead of only triggering defaults. This enables:
- Different chimes for different doorbells
- Seasonal or contextual sounds
- Automation triggers based on chime playback
Intercom updates clarify signaling requirements and add support for integrated chimes, ensuring consistent behavior across ecosystems.
Continuing To Improve The Matter Ecosystem
As a maintenance release, Matter 1.5.1 also includes editorial clarifications, bug fixes, and refinements—many focused on camera functionality introduced in version 1.5.
These updates strengthen interoperability and help ensure reliable performance as Matter adoption grows.
With each release, Matter continues to mature as a foundation for interoperable smart home devices, simplifying development for manufacturers and improving user experience.
The Connectivity Standards Alliance (CSA) is a global organization that develops and promotes open standards for IoT and smart home technologies. It is best known for creating the Matter standard, enabling secure and seamless interoperability between devices across different brands and ecosystems.
Internal Links URLs
https://security.world/matter-camera-support-overview/
External Links URLs
https://csa-iot.org/
Frequently Asked Questions (FAQs)
1. What is Matter 1.5.1?
Matter 1.5.1 is an incremental update to the Matter smart home standard, focusing on improving camera performance, streaming efficiency, and device flexibility.
2. What is the biggest improvement in this update?
The introduction of multi-stream video support, allowing cameras to deliver multiple optimized streams simultaneously.
3. How does HEIC support benefit users?
HEIC provides better image quality with smaller file sizes, reducing bandwidth and storage usage.
4. What improvements were made to doorbells and chimes?
Chimes can now play specific sounds on request, and doorbells receive stability and interoperability enhancements.
5. Why is this update important for smart homes?
It improves reliability, flexibility, and performance, making smart home devices more efficient and easier to integrate.