Davinci Resolve timecode conversion from WAV

convert.py

import sys
import subprocess
import re
import os

# Edit the following variables as needed
usesExtraHour = True
systemTimebase = 44100
fps = 24

def get_ffmpeg_metadata(wavfile):
    result = subprocess.run(
        ["ffmpeg", "-i", wavfile, "-f", "ffmetadata", "-"],
        capture_output=True, text=True, check=True
    )
    return result.stdout

def parse_chapters(metadata):
    chapters = []
    timebase = 1/systemTimebase  # Defined in metadata
    
    for i, match in enumerate(re.finditer(r'START=(\d+)', metadata), start=1):
        start_frames = int(match.group(1))
        seconds = start_frames * timebase
        frames = round((seconds % 1) * fps) 
        if usesExtraHour:
            hours = int(seconds // 3600) + 1
        else:
            hours = int(seconds // 3600)
        timecode = f"{hours:02}:{int((seconds % 3600) // 60):02}:{int(seconds % 60):02}:{frames:02}"
        print(f"Chapter {i}: {timecode}")
        chapters.append((i, timecode))
    
    return chapters

def generate_edl(timecodes, output_file):
    with open(output_file, "w") as edl:
        edl.write("TITLE: Markers\n")
        edl.write("FCM: NON-DROP FRAME\n\n")
        
        for i, (idx, tc) in enumerate(timecodes, start=2):
            edl.write(f"{i:03}  001      V     C        {tc} {tc} {tc} {tc}\n")
            edl.write(f" |C:ResolveColorBlue |M:Marker {idx} |D:1\n\n")

def main():
    print("Timecode Converter v1.0\n")
    print("Selected Settings:\n\033[1mFPS = 24\nTimebase = 44100\nExtra Hour = True\n\033[0m")
    if len(sys.argv) != 2:
        print("Usage: python3 convert.py input.wav")
        sys.exit(1)
    
    wavfile = sys.argv[1]
    output_edl = os.path.splitext(wavfile)[0] + ".edl"
    
    try:
        print(f"Reading metadata from {wavfile}...\n")
        metadata = get_ffmpeg_metadata(wavfile)
        timecodes = parse_chapters(metadata)
        generate_edl(timecodes, output_edl)
        print(f"\nEDL file generated: {output_edl}")
        print("\nTo open this in Resolve,\n(1) Right click on your timeline in the Media Pool\n(2) Go to Timelines \033[1m(in the context menu)\033[0m, Import\n(3) Click \033[1mTimeline markers from EDL\n\033[0m(4) Select the generated EDL file\n(5) Markers should be imported")
    except Exception as e:
        print(f"Error: {e}")
        sys.exit(1)

if __name__ == "__main__":
    main()