GoPro Concat with Python and FFMPEG

A Python script to stitch together large batches of segmented GoPro files.

Project Description

GoPro records .MP4 video files that are segmented based on a 4Gb file size limit. This script is used to go through a large batch of segmented GoPro files and merge them based on their file number and creation dates.

Example:

GOPR1234.mp4 The first video in a set - always contains "GOPR" at the head of the filename, followed by a file number.)

GP011234.mp4 1st chapter of the original video - subsequent files have "GPO" followed by a chapter number and then a file number. )

GP021234.mp4 2nd chapter of the same video - GP0 + 2 + 1234 + .mp4

Prerequisites

Mac OS X 10.11 or later

Python 3.6 or later

pymediainfo

FFMPEG 4.1 or later

Files Included

setup.py - optional script to run, it will install the pymediainfo library.

gopro_main.py - execute for initialization of the script.

gopro_concat.py - the module that handles the concatantion and downconvert of the segmented GoPro files.

get_mediainfo.py - the module that uses pymediainfo to get all the metadata on the video files.

Getting Started

After the prerequisites are installed.

1. cd to the working dir for the script and execute python3 gopro_main.py from the terminal.

2. The terminal will prompt for user input:

   • Source Directory path
   • Output Directory path
   • DownConvert (Yes/No)

3. Let the script run, monitor the progress by checking the logs in output folder.

Steps in the Script

1. Make a list of all the GoPro .MP4 files in a given source directory.
2. Loop through the list and group files into dictionaries based on name and creation.
3. Get the mediainfo for these files.
4. Create a .txt file(s) with the full paths of files.
5. Pass the .txt file to FFMPEG which concats the grouped MP4 into one .MP4.
6. (Optional) Downconvert the merged file to a lower bitrate.