python - 使用openCV时如何在Google Colab上播放视频？

Question

我已将视频文件上传到Google Colab，但无法显示。

我试过了 :

import numpy as np
import cv2
from google.colab.patches import cv2_imshow


cap = cv2.VideoCapture('video.mp4')

while True:
    ret, frame = cap.read()

    cv2_imshow(frame)

但这只会显示视频的所有帧。

Answer 1

要上传视频:

from google.colab import files
files.upload()

要观看视频:

from IPython.display import HTML
from base64 import b64encode
video_path = 'video_name.mp4'

mp4 = open(video_path,'rb').read()
decoded_vid = "data:video/mp4;base64," + b64encode(mp4).decode()
HTML(f'<video width=400 controls><source src={decoded_vid} type="video/mp4"></video>')