<img width="318" alt="image" src="https://user-images.githubusercontent.com/41142031/187419356-fb8dd8cf-67cb-490a-944b-82f008e832d5.png"> <img width="790" alt="image" src="https://user-images.githubusercontent.com/41142031/187419393-c259e8dd-9f52-473e-b2a6-ed1454337b3e.png"> 看样子应该是没有获取到视频，这个需要怎么处理一下？ 以下是代码： <img width="558" alt="image" src="https://user-images.githubusercontent.com/41142031/187419582-5a40cb6e-a66c-4525-a69b-4acb00df9e92.png"> <img width="554" alt="image" src="https://user-images.githubusercontent.com/41142031/187419652-89d19830-15b8-44a2-9ec7-de50d102c48d.png"> <img width="572" alt="image" src="https://user-images.githubusercontent.com/41142031/187419688-58f7324e-a0b6-406e-bf70-1c3b7a2a62ba.png"> <img width="613" alt="image" src="https://user-images.githubusercontent.com/41142031/187419732-a52ac2d3-836b-49b0-99e4-8a8eaf93961f.png">
