Convert videos to Apple compatible videos, to fix photo sync error between Apple devices: "Some videos were not copied to the iPhone because they cannot be played on this iPhone."

apple_compatible_video_converter.py

import os
import subprocess
import shutil

def convert_videos(input_dir, output_dir):
    # Ensure the output directory exists
    os.makedirs(output_dir, exist_ok=True)

    # Get all mp4 files
    mp4_files = [f for f in os.listdir(input_dir) if f.endswith('.mp4')]
    total_files = len(mp4_files)

    for index, filename in enumerate(mp4_files, start=1):
        input_file = os.path.join(input_dir, filename)
        output_file = os.path.join(output_dir, filename)

        # Output progress
        print(f"{index}/{total_files} {filename}")

        # Call ffmpeg to perform the conversion
        ffmpeg_command = [
            'ffmpeg',
            '-hide_banner',
            '-loglevel', 'error',
            '-i', input_file,
            '-vcodec', 'libx264',
            '-profile:v', 'main',
            '-level', '3.1',
            '-preset', 'medium',
            '-crf', '25',
            '-x264-params', 'ref=4',
            '-acodec', 'copy',
            '-movflags', '+faststart',
            output_file
        ]
        subprocess.run(ffmpeg_command)

        # Modify output file's timestamp attributes
        if os.path.exists(output_file):
            input_stat = os.stat(input_file)
            os.utime(output_file, (input_stat.st_atime, input_stat.st_mtime))
            # For creation time, if the system supports it
            try:
                shutil.copystat(input_file, output_file)
            except Exception as e:
                print(f"Unable to copy timestamps: {e}")

if __name__ == "__main__":
    input_directory = './input'  # Input directory
    output_directory = './output'  # Output directory
    convert_videos(input_directory, output_directory)