哪个modelfield可以存储django中的视频播放时间？或者，显示没有关联时钟的TimeField

from django.db import models

class Video(models.Model):
    play_time = models.DurationField()

    def __str__(self):
        return f"Video {self.id}"

from django.db import models

class Clock(models.Model):
    time = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return f"Clock {self.id}"