python opencv frame synthesis video

python opencv frame synthesis video

import cv2
import os
from datetime import datetime
 
# print(cv2.__version__)
 
def frames_to_video(save_path, frames_path):
    # fourcc = cv2.VideoWriter_fourcc(*'mp4v')
    fourcc = cv2.VideoWriter_fourcc('m', 'p', '4', 'v')
    fps = 25
    video_width, video_height = 1920, 1080
    videoWriter = cv2.VideoWriter(save_path, fourcc, fps, (video_width, video_height))
    # videoWriter = cv2.VideoWriter(save_path, -1, fps, (video_width, video_height))
    imgs = glob.glob(frames_path + "/*.jpg")
    # print(imgs)
    # frames_num = len(imgs)
    for i in range(2851,2894):
        if os.path.isfile("%s/%d.jpg"%(frames_path, i)):
            # print(i)
            frame = cv2.imread("%s/%d.jpg"%(frames_path, i))
            # print(frame.shape)
            videoWriter.write(frame)
    videoWriter.release()
    return
 
 
if __name__ == '__main__':

    frames_to_video("jian_1_25.mp4", 'jian_1_25_frames')

When I used it several times before, it seemed that the size of the image in the generated video did not correspond to the original image size. So it always fails to generate.