motion_transfer.py

import os
import cv2
import numpy as np


def transfer_motion(input_video_path):
    """
    Placeholder function for motion transfer.
    Currently just copies the video as-is.
    Replace this with FOMM / first-order-motion model code for actual character replacement.
    """
    output_path = input_video_path.replace("input_videos", "output_videos").replace(".mp4", "_transferred.mp4")

    cap = cv2.VideoCapture(input_video_path)
    width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
    height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))
    fps = cap.get(cv2.CAP_PROP_FPS)

    fourcc = cv2.VideoWriter_fourcc(*"mp4v")
    out = cv2.VideoWriter(output_path, fourcc, fps, (width, height))

    while True:
        ret, frame = cap.read()
        if not ret:
            break
        # For now: no change. Replace this with actual transferred frame.
        out.write(frame)

    cap.release()
    out.release()
    return output_path