Extract and rename BMW Drive Recorder video clips

bmw_drive_recorder_extract.py

"""
Script to extract video files written by the BMW Drive Recorder in my 2024 model
and rename them using the date and time in the directory names that it writes
into USB storage.

This is free and unencumbered software released into the public domain and comes
with no warranties.

Requirements:

1. A Python 3 runtime installed.
2. (Optional, see below) The ffmpeg command line tool installed.

Place in same directory as the DriveRecorder directory extracted from the
vehicle. Run script using Python, like `python3 ./bmw_drive_recorder_extract.py`.

This assumes a directory structure like:

- DriveRecorder
  - YYYY-MM-DD_HH-MM-SS(am|pm)_Manual
    - Some_Video_File.ts
    - Metadata
  - ...

Output looks like:

- Extracted
  - BMW_YYYY-MM-DD_HH-MM-SS(am|pm).(ts|mp4)
  - ...

The script can convert to MP4 along the way using ffmpeg (and a default
codec). For that:

1. Install the ffmpeg command line utility.
2. Set CONVERT_TO_MP4_WITH_FFMPEG below to True before running.

Of course, you can edit the script further to change inputs and outputs.
"""


CONVERT_TO_MP4_WITH_FFMPEG = False


import os
import shutil

# Path to the DriveRecorder folder
drive_recorder_path = "./DriveRecorder"
output_path = "./Extracted"
os.mkdir(output_path)

# Iterate over each subdirectory
for subdir in os.listdir(drive_recorder_path):
    subdir_path = os.path.join(drive_recorder_path, subdir)
    if not os.path.isdir(subdir_path):
        continue
    for file in os.listdir(subdir_path):
        # Find the video file
        if file.endswith(".ts"):
            dir_date_time = subdir.rsplit("_", 1)[0]
            old_video_path = os.path.join(subdir_path, file)
            # Rename and move the video file
            new_video_name = f"BMW_{dir_date_time}" + ".mp4" if CONVERT_TO_MP4_WITH_FFMPEG else ".ts"
            new_video_path = os.path.join(output_path, new_video_name)
            if CONVERT_TO_MP4_WITH_FFMPEG:
                import subprocess
                subprocess.run(['ffmpeg', '-i', old_video_path, new_video_path])
            else:
                shutil.move(old_video_path, new_video_path)