Video inference will overwrite the original video

[JefferyChiang]

Thanks for this implementation. Its easy to use and really efficient. I try to use video to inference. But the result video keep overwrite my original video.

I change demo.py like below and it work properly. I think its because of the difference path delimiter between windows and linux. save_path = ( os.path.join(save_folder, args.path.split("\\")[-1])

[RangiLyu]

Maybe add a prefix to the result video can solve this.