Write Blender sequencer markers to a CSV file

blender-markers-to-csv.py

# From: https://www.quollism.com/b/archives/113
#
# "You can copypaste this script straight into Blender’s text editor and hit 
# “Run Script” to output filename_frames.csv in the directory right next to 
# your currently open file. Yay!"
#

import bpy
import csv
import os

C = bpy.context
markers = {}

for m in C.scene.timeline_markers:
    markers[m.frame] = m.name

k = list(markers.keys())
k.sort()
frameinfo = []

for frame in k:
    frameinfo.append( [markers[frame], frame] )

with open(os.path.splitext(bpy.data.filepath)[0]+'_frames.csv', 'w', newline='') as f:
    writer = csv.writer(f)
    writer.writerow( [ "Marker", "Frame" ] )
    for row in frameinfo:
        writer.writerow(row)

print("All done!")

Really Works.
Only for timeline.
I go to search solution for reading this files.
Thanks !

Please thank the original author at From: https://www.quollism.com/b/archives/113 . This is just a fork. :)

If you are looking for a solution to read the markers back in, here is a ChatGPT generated reverse script (untested) to do that:

import bpy
import csv
import os

def import_markers_from_csv(csv_file):
    with open(csv_file, 'r') as f:
        reader = csv.DictReader(f)
        markers_data = list(reader)

    for data in markers_data:
        frame = int(data['Frame'])
        name = data['Marker']
        bpy.context.scene.timeline_markers.new(name=name, frame=frame)

csv_file_path = "path/to/your/filename_frames.csv"
import_markers_from_csv(csv_file_path)
print("Markers imported from CSV file.")