I downloaded a video, but clipping either doesn't work or takes an extremely long time. One time it stayed at 1% for nearly an hour. I've retried the same video over multiple days with the same result. Please help

I've been having the same issue for several days. Whenever I download a video and try to create clips, it either doesn't work at all or takes an extremely long time to process. One time, the progress stayed at 1% for almost an hour without moving. I thought it might just be a temporary problem, so I tried again the next day with the same video, but the exact same thing happened. Today I tried once more, and it's still not working. I've waited patiently and retried multiple times, but nothing has changed. Could you please look into this issue and let me know if there's a fix or if I'm doing something wrong?