ACAP version 12.8 – January 21, 2026

Overview

The release contains:

• ACAP Native SDK 12.8.0
• ACAP Runtime 2.0.1 (Release notes)
• Docker ACAP 3.0.3 (Release notes)
• Docker Compose ACAP 3.0.3 (Release notes)

Code examples:

• Code examples ACAP Native SDK 12.8.0 (Release notes)
• Code examples ACAP Computer Vision Solution 12.8.0 (Release notes)

Device software:

• Minimum AXIS OS version: 12.8

New additions

• API:

  • Nexus API: New publish/subscribe API enabling asynchronous communication between ACAP applications. Producers publish data to topics and consumers subscribe to receive updates—useful for sharing detection data or monitoring system resources between applications. See API documentation and example applications.

• Manifest schema updates:

  • New version 1.9.0 introduced with the following changes:
    • New resource nexus_beta1 for enabling the Nexus API. When enabled, the application can create topics, publish data, and subscribe to updates.

• ACAP documentation:

  • New web server documentation with added guidance on implementing web interfaces for ACAP applications using reverse proxy or FastCGI.

Changes

• API:
  • Video capture API (VDO): Added stream creation convenience functions vdo_stream_rgb_new, vdo_stream_nv12_new, and vdo_stream_y800_new for simplified creation of video streams in RGB, NV12, and Y800 (grayscale) formats. See the using-opencv example for how they are used.
  • cURL upgraded from 8.16.0 to 8.17.0 to increase overall cybersecurity level.
• ACAP application examples:
  • The vdostream example has been updated to demonstrate how to use vdo_stream_snapshot from the Video capture API (VDO) to retrieve still images using the AVIF format, which is available on ARTPEC-9 devices.

Bug fixes

None in this release.

APIs supported in this release

Axis API	Chip
Axoverlay API	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6
Bounding Box API	ARTPEC-9, ARTPEC-8, ARTPEC-7, CV25
Edge storage API	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6, CV25, i.MX 6SoloX
Event API	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6, CV25, i.MX 6SoloX
License Key API	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6, CV25, i.MX 6SoloX
Machine learning API	ARTPEC-9, ARTPEC-8, ARTPEC-7, CV25
Message broker API	ARTPEC-9, ARTPEC-8, ARTPEC-7, CV25
Nexus API	ARTPEC-9, ARTPEC-8, ARTPEC-7, CV25
Parameter API	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6, CV25, i.MX 6SoloX
Serial port API	ARTPEC-9, ARTPEC-8, ARTPEC-7
Video capture API	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6, CV25

Open source API	Chip
Cairo	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6
cURL	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6, CV25, i.MX 6SoloX
FastCGI	ARTPEC-9, ARTPEC-8, ARTPEC-7, CV25, i.MX 6SoloX
Jansson	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6, CV25, i.MX 6SoloX
OpenCL	ARTPEC-9, ARTPEC-8, ARTPEC-7
OpenSSL	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6, CV25, i.MX 6SoloX
Pipewire	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6, CV25, i.MX 6SoloX

Special API	Chip
VAPIX APIs	ARTPEC-9, ARTPEC-8, ARTPEC-7, ARTPEC-6, CV25, i.MX 6SoloX