Export a Frame for Each Shot

__init__.py

bl_info = {
    "name": "Export a Frame for Each Shot",
    "author": "tintwotin",
    "version": (1, 0),
    "blender": (3, 00, 0),
    "location": "Strip > Export a Frame for Each Shot",
    "description": "",
    "warning": "",
    "doc_url": "",
    "category": "Sequencer",
}

import bpy, os
from bpy.types import Operator
from os import path
import re

def slugify(name):
    return re.sub(r'[\W_]+', '-', name)

class OPERATOR_OT_export_a_frame_for_each_shot(Operator):
    """Convert selected strips to IDs"""

    bl_idname = "sequencer.vse_export_a_frame_for_each_shot"
    bl_label = "Export a Frame for Each Shot"
    bl_options = {"REGISTER", "UNDO"}

    def execute(self, context):
        
        filepath = bpy.data.filepath
        base_dir = path.dirname(filepath)
        scene = bpy.context.scene                
        
        strips = bpy.context.selected_editable_sequences
        strips = sorted(strips, key=lambda strip: strip.frame_final_start)

        original_out = scene.render.filepath
        original_format = scene.render.image_settings.file_format
        context.window_manager.progress_begin(0, len(strips))
        org_path = scene.render.filepath

        for i, sq in enumerate(strips):
            if sq.type == "IMAGE":
                out_path = f'C://tmp/{slugify(scene.name)}/frames/{sq.frame_final_start:06d}_{slugify(sq.name)}.jpg'
                scene.render.filepath = out_path
                scene.render.image_settings.file_format = 'JPEG'
                scene.frame_current = sq.frame_final_start
                bpy.ops.render.render(write_still=True, scene=scene.name)
        
        scene.render.filepath = org_path   
        return {"FINISHED"}


def menu_append(self, context):
    layout = self.layout
    layout.separator()
    layout.operator(OPERATOR_OT_export_a_frame_for_each_shot.bl_idname)


def register():
    bpy.utils.register_class(OPERATOR_OT_export_a_frame_for_each_shot)
    bpy.types.SEQUENCER_MT_strip.append(menu_append)


def unregister():
    bpy.utils.unregister_class(OPERATOR_OT_export_a_frame_for_each_shot)
    bpy.types.SEQUENCER_MT_strip.remove(menu_append)


if __name__ == "__main__":
    register()