feat/class-video

[Zeyi-Lin]

Description

Close: #342

test code

解开Video的引入注释后：

import swanlab
import numpy as np

swanlab.init()

mp4_file = "path/to/file"
swanvideo = swanlab.Video(mp4_file, caption="video")

frames = np.random.randint(low=0, high=256, size=(10, 3, 100, 100), dtype=np.uint8)
swannpvideo = swanlab.Video(frames, fps=24)

gif_file = "path/to/file"
swanlabgifvideo = swanlab.Video(gif_file, format="gif")

swanlab.log({"video": swanvideo})
swanlab.log({"video": swannpvideo})
swanlab.log({"video": swanlabgifvideo})

test video/gif file

snowman.mp4

[Zeyi-Lin]

由于只有Video在传入numpy格式的视频时才需要安装moviepy，且这个库稍大，所以把这个库以安装提示的方式放入代码中：

  try:
      import moviepy
  except ImportError as e:
      raise TypeError(
          "swanlab.Video requires moviepy when process numpy data. Install with 'pip install moviepy'."
      )

[Zeyi-Lin]

ffmpeg需要去官网安装完整版，仅pip install不够，且moviepy可能在除ffmpeg以外的地方有其他报错，所以倾向于约束moviepy的使用范围（如不放到最开头的Import里面），而不单独处理此问题，让用户自行上网搜索