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MoreTore/docs/concepts/logs.md
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Test User b965950a7a Update URLs from connect.comma.ai to stable.konik.ai across documentation and codebase
- Changed references in logs.md, pull request template, and various UI components to point to stable.konik.ai.
- Updated pairing dialog and related translations to reflect the new URL.
- Modified API endpoints and documentation to ensure consistency with the new domain.
- Ensured all instances of connect.comma.ai are replaced with stable.konik.ai in user-facing messages and code comments.
2026-01-22 16:25:41 -06:00

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# Logging
openpilot records routes in one minute chunks called segments. A route starts on the rising edge of ignition and ends on the falling edge.
Check out our [Python library](https://github.com/commaai/openpilot/blob/master/tools/lib/logreader.py) for reading openpilot logs. Also checkout our [tools](https://github.com/commaai/openpilot/tree/master/tools) to replay and view your data. These are the same tools we use to debug and develop openpilot.
For each segment, openpilot records the following log types:
## rlog.bz2
rlogs contain all the messages passed amongst openpilot's processes. See [cereal/services.py](https://github.com/commaai/cereal/blob/master/services.py) for a list of all the logged services. They're a bzip2 archive of the serialized capnproto messages.
## {f,e,d}camera.hevc
Each camera stream is H.265 encoded and written to its respective file.
* `fcamera.hevc` is the road camera
* `ecamera.hevc` is the wide road camera
* `dcamera.hevc` is the driver camera
## qlog.bz2 & qcamera.ts
qlogs are a decimated subset of the rlogs. Check out [cereal/services.py](https://github.com/commaai/cereal/blob/master/services.py) for the decimation.
qcameras are H.264 encoded, lower res versions of the fcamera.hevc. The video shown in [comma connect](https://stable.konik.ai/) is from the qcameras.
qlogs and qcameras are designed to be small enough to upload instantly on slow internet and store forever, yet useful enough for most analysis and debugging.