Regularize and merge video files produced by a Blackvue dashcam using ffmpeg-python.

This tool finds all videos in a directory, which are typically one minute long. It groups them by hour and camera source (front or back). To concatenate, it re-encodes all videos with the largest detected bit rate, with a constant rate, and adds in silent audio tracks for files without audio (from parking mode). It then concatenates all videos into one file that's up to an hour long.

Requires ffmpeg-python.

Tested on a MacBook M2 with 4K output from a Blackvue DR970X-2CH Plus. The tool uses the h264_videotoolbox video codec (for Mac). This could be made configurable with future pull requests.

Run as python blackvue_dashcam_merge.py [src_dir] [dst_dir}. For example,

% python blackvue_dashcam_merge.py /Volumes/BLACKVUE/BlackVue/Record/ ~/Dashcam/