The Recording and Playback API brings together MP4 video, IMU, depth, and metadata. See how to create a reproducible QA foundation for augmented reality.
Direct answer
ARCore's Recording and Playback API records video, motion data, and metadata from a session to an MP4 file and allows you to play it back as input to the application. This reduces repeat site visits and creates reusable scenarios across devices and versions. Replay, however, may detect trackables and poses differently than the original session; therefore, it complements, but does not eliminate, in-person testing.
A scenario becomes a test asset
A walk through a factory, store or construction site can be captured once and used by development, QA and partners. The file documents an observed condition and reduces dependency on scheduling and physical access.
MP4 carries more than image
In addition to the main video, the session can include IMU, API events, higher resolution camera, depth visualization, and custom data. Some of this information may be sensitive and requires a retention policy.
Reproduction is not perfect determinism
ARCore warns that the quantity, time and pose of detected elements may vary. Tests should use tolerances and verify observable results, without assuming bit-for-bit equality between runs.
The matrix needs to represent risk
Include lighting, speed, occlusion, tracking loss, resume, relevant devices and versions. A single well-lit route does not represent the entire operation.
Nexus Reading
Reproducible QA turns demo AR into operable software. The best pilot builds his scenario library along with the product, not after the first failure in the field.
FAQ
Is the recorded file a regular MP4?
Yes, with additional tracks and metadata; Compatible players can display the video, but ARCore interprets the session data.
Is it possible to test on another device?
Yes, respecting compatibility and processing differences.
Does this eliminate site visits?
No. It reduces repetition, but implementation and real conditions still require in-person validation.
Essential guides to delve deeper into the decision
This editorial analysis was produced by Nexus from the official sources below, consulted on September 13, 2026. The text is original and interprets practical implications for companies.
- Google ARCore — Recording and playback introduction: official view, recorded content, cases and limitations.
- Google ARCore — Android recording and playback guide: implementation, compatibility and playback behavior.
Date reported by main source: documentation consulted on September 13, 2026.