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GyLog Basics

This page is the starting point for recording gyro data with GyLog and stabilizing footage in Gyroflow.

Applies To

  • People who want to record gyro data with GyLog
  • People who want to stabilize footage in Gyroflow
  • People who want to stabilize footage shot on the iPhone itself
  • People who want to use an iPhone or Android phone as a gyro logger
  • Last updated: 2026-05-19

Basic Idea

GyLog records smartphone gyro data together with timing information.

After shooting, the phone log time and the camera video timestamp can be used to make syncing easier, then the motion can be adjusted and stabilized in Gyroflow.

This timestamp-based sync workflow is one of the main reasons to use GyLog.

What You Need

Common

For iPhone camera footage

  • An iPhone that can record footage for use with Gyroflow, such as ProRes RAW
  • Compatible external USB-C storage and cable if you are recording ProRes RAW
  • GyLogSync, if needed
  • DaVinci Resolve or another compatible video editor and a Gyroflow video editor plugin, if needed. Use DaVinci Resolve Studio for full-resolution Open Gate output.

For mirrorless or other external cameras

  • The camera used for filming
  • A smartphone running GyLog
  • A holder or adapter that fixes the smartphone firmly to the camera
  • GyLogSync, if needed

If you also want to use the smartphone as an external monitor, you may need a separate HDMI/USB-C capture adapter and a compatible monitoring app.

This is not required for gyro logging itself. For GyLog, the important part is that the smartphone is fixed firmly to the camera while recording the log.

Common Notes

  • Keep the phone fixed relative to the camera during recording.
  • Avoid applying camera-side stabilization and Gyroflow stabilization at the same time.
  • If shutter speed is too slow, motion blur can remain even after stabilization.
  • If the lens profile does not match the footage, the edges of the frame may look distorted.