KeyframeCutandConcat

This program is perfect for editing HDR Video without an expensive Graphics card that supports HDR editing, a software licence for Davinci Resolve Studio / Adobe Premiere pro & a HDR screen

This Python program is designed to trim video files to specific start and stop times using the ffprobe and ffmpeg command line tools. It sequentially goes through each video in the folder it's been executed from, asks the user to specify the start and stop times in the format mm:ss, finds the closest iframe to the chosen time using ffprobe, and trims the video to that time using ffmpeg. The trimmed video is saved in a subfolder titled concat as original_filename_trimmed.mp4.

Dependencies

This program requires the following command line tools to be installed:

• ffprobe
• ffmpeg

These tools can typically be installed using your operating system's package manager.

Usage

1. Download the trim.py and concat.py files and save them in the directory containing the video files you wish to trim.
2. Open a terminal window and navigate to the directory containing the trim.py file.
3. Run the program by typing python trim.py in the terminal and pressing enter.
4. For each video file, enter the start and stop times in the format mm:ss when prompted.
5. The trimmed videos will be saved in the concat subfolder.

How it works

The program first checks if a subfolder titled concat exists in the current directory. If it does not, the program creates it using the os module.

The program then uses the os module to get a list of all video files in the current directory. It iterates through each video file and prompts the user to enter the start and stop times in the format mm:ss.

The program then uses the subprocess module to execute the ffprobe command on the video file to find the closest iframe to the chosen start and stop times. The output of the ffprobe command is parsed to extract the iframe times, which are converted to floats.

The program then uses the min() function to find the index of the iframe closest to the chosen start and stop times. The chosen start and stop times are converted from mm:ss format to seconds, and the closest iframe times are used to calculate the start and stop frames.

Finally, the program uses the subprocess module to execute the ffmpeg command on the video file to trim it to the chosen start and stop times. The trimmed video is saved in the concat subfolder with the filename original_filename_trimmed.mp4.

Lastly, it changes directory to the concat folder and executes the concat.py script to concat all the video files.