Sony has released firmware updates that bring C2PA Content Credentials to video recording for the first time. The a9 III, a1 II, Cinema Line FX3 and FX30, and the PXW-Z300 camcorder now support embedding digital signatures directly into video files - confirming that footage was captured by a real Sony camera and not generated by AI.
The update introduces a "Write Digital Signature" function for movies across all five camera bodies. Sony's system goes beyond basic C2PA signing by also incorporating 3D depth information from the camera sensor, enabling verification that videos were captured of actual three-dimensional subjects rather than flat screens or projections. The PXW-Z300 camcorder does not support the 3D depth feature.
Video authenticity: a first
This is the first time C2PA Content Credentials have been available for video on shipping consumer and professional cameras. Sony first teased the capability when it announced the PXW-Z300 camcorder in July 2025, billing it as the world's first camcorder with C2PA support. The October firmware update delivers on that promise and extends it to the mirrorless lineup.
Sony has also announced plans to extend video C2PA support to additional bodies. The a7R V, a7 IV, and a1 are scheduled for support from November 2025, with the a7S III planned for 2026.
BBC collaboration
The video authenticity workflow was developed in collaboration with BBC Research and Development. As part of the IBC Accelerator Programme, the BBC and Sony demonstrated an end-to-end workflow showing how users can verify the authenticity of video content using C2PA-enabled devices. The demonstration was exhibited at IBC 2025 in Amsterdam.
Video signing requires a separate upgrade licence from Sony and currently supports MP4 format only. Still image C2PA support, which has been available on Sony Alpha cameras since 2024, continues to work alongside the new video capability.
For setup instructions and camera-specific details, see our Sony Camera Guide.