# 视频时间码与帧率

时间码是一种时间量，格式为小时:分钟:秒:帧，常用于视频编辑。创建时间码时，您应该指定所需的帧率（fps）。

您可以向时间码添加/移除时间或帧单位

```
03:10:20:05 at 30 fps + 50 frames                 | 03:10:21:25
00:10:20:50 @ 60 fps + 10 minutes                 | 00:20:20:50
3h 2m 25s 10 frames at 24 fps + 1 hour 12 minutes | 04:14:25:10
```

或者将时间码转换为帧数，或将帧数转换为时间码

```
00:30:10:00 @ 24 fps in frames | 43,440 frames
43,440 frames @ 24 fps         | 00:30:10:00
```

将时间码相加，或相减

```
03:10:20:05 @ 30 fps + 03:10:20:010 | 06:20:40:15
03:10:20:05 at 12 fps - 00:20:35:00 | 02:49:45:05
```

{% hint style="info" %}
• 当相加或相减时间码时，您只需为操作中的一个时间码指定所需的帧率

• 其他时间码将自动使用指定的帧率
{% endhint %}

{% hint style="info" %}
• 如果在创建时间码时未指定所需的帧率，将使用 **24 fps**（常用于电影制作）的默认帧率

• 您可以通过定义一个以 **fps** 为单位的**全局变量**来覆盖默认帧率

<img src="/files/B82LtBy8YgRrHq5qDNYZ" alt="" data-size="original">
{% endhint %}

### 帧和 fps

使用帧和 fps（帧/秒）单位执行计算

```
30 fps × 3 minutes    | 5,400 frames
15.6k frames / 24 fps | 650 s
```


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