gpmerger is a small Python CLI utility to merge chaptered GoPro MP4 video files. Humble highlights:

• auto-detect and merge chaptered video files in a directory with pretty terminal summary
• preserve gyroscopic metadata streams for stabilization postprocessing (e.g. via GyroFlow). Default file concatenation via FFMPEG or GUI tools like DaVinci result in discarding the gyro data.

CLI report example

gpmerger uses Python version 3.11 and rich for pretty terminal visualization.

You can clone and use the scripts as-is. Make sure to use in an Python environment fitting the above criteria. The heavy lifting in terms of stitching MP4 files together is either done by FFMPEG or mp4merge. You thus need to install one or both to use the respective program as a merging backend.

• FFMPEG : Download
• mp4merge : Download

Then you will have to set the installation path of the executables in the conf.toml configuration file.

[binaries]
FFMPEG = "~/your/path/to/ffmpeg.exe"
MP4MERGE = "~/your/path/to/mp4merge.exe"

• Improve installation
  • Auto-install core binaries or detect from path/env ?
• Expand logging
  • More log messages
  • Option for log file saving
• Add intra-file merging feedback or progress reporting

Distributed under the MIT License. See LICENSE.txt for more information.

Jannik Stebani || Project Link: https://github.com/stebix/gpmerger

FFMPEG project - incredible value for video codec infrastructure GyroFlow project - incredible tooling for stabilization postprocessing via optical flow and gyroscopic metadata

• FFMPEG
• GyroFlow