What is braw-gyro-stabilizer?

This is a plugin for Adobe Premiere Pro that stabilizes shaky handheld video footage shot on Blackmagic cameras. Rather than analyzing the picture to guess how the camera moved, it reads motion data that these cameras already record inside their BRAW file format, captured by the camera's built in gyroscope and accelerometer, and uses that real movement information to correct each frame as it plays. Because the camera's own sensor data is already stored in the file, there is nothing to calibrate or configure by hand. The plugin automatically tracks focal length changes if a zoom lens is used, corrects for rolling shutter distortion using timing data read from the file, and even handles footage recorded at one frame rate but played back at another. It works with any BRAW importer, official or third party, since it reads the gyro data straight from the file rather than depending on how the picture itself is decoded. There is no separate analysis or rendering pass beforehand: the correction is computed per frame on the graphics card as the clip plays. The plugin only works with genuine Blackmagic RAW files, not ProRes, and only with cameras that actually record gyro data, which includes recent Pocket Cinema Camera and Cinema Camera models, the PYXIS 6K, and the URSA Cine line, provided their firmware is new enough. If a clip has no gyro data, the effect simply passes the frame through without changes and a built in check button reports that clearly. Installation is done through a downloadable installer package, currently for Apple silicon Macs only, since macOS blocks unsigned installers by default and the README walks through allowing it in system security settings. Once installed, the effect appears under Premiere's video effects menu, and its main controls include an adjustable smoothing amount, an optional horizon leveling and tilt setting, automatic zoom-in cropping to hide the edges exposed by the stabilization warp, and a debug mode that logs details to a file and shows whether the effect is running on the graphics card or the processor. Advanced settings not exposed in the interface can be edited directly in a saved configuration file. A Windows version is described as planned only if there is enough interest.