With the 2025 Holiday Update, alongside showing the pedals state in the recorded videos, Tesla has added basic telemetry to the in-car Dashcam interface and released a new Dashcam Tools repository on GitHub, allowing owners to decode and analyze the data embedded in their dashcam footage. It’s effectively the first time Tesla drivers have been handed the keys to their own "black box".
The highlight is a browser-based viewer where users can drag and drop a dashcam file to see synchronized, frame-level telemetry. The video now contains embedded SEI (Supplemental Enhancement Information) metadata showing real-time accelerator position, brake usage, steering angle, Autopilot/FSD state, turn signals, GPS coordinates, acceleration vectors, and more. For accidents, insurance claims, and legal disputes, this turns subjective interpretation into verifiable numbers extracted directly from the video.
This new capability is enabled by Tesla’s updated video encoding introduced in firmware 2025.44.25, which merges telemetry with visual frames for perfect synchronization. However, the feature requires vehicles equipped with HW3 or HW4, as only those systems can handle the additional processing overhead. Tesla also notes that Sentry Mode recordings may lack telemetry, since parked vehicles power down many sensors to conserve energy.
Despite the viewer running in a web browser, Tesla says all processing happens locally, meaning no footage is uploaded to Tesla or any external server — an important safeguard for privacy-sensitive material. For deeper inspections, Tesla’s GitHub repository also includes a metadata extraction tool. Together, these changes give owners unprecedented insight into their car’s behavior and a far more transparent set of tools for understanding incidents on the road.
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