MoviePy

## 安装
```
pip install moviepy
```

## 视频剪辑
### 示例
```python
from moviepy.editor import VideoFileClip, concatenate_videoclips

# 载入视频
clip1 = VideoFileClip("./clip1.mp4")
clip2 = VideoFileClip("./clip2.mp4").subclip(50,60)
clip3 = VideoFileClip("./clip3.mp4")
# 合并视频
video = concatenate_videoclips([clip1,clip2,clip3])
# 保存视频
video.write_videofile("hello.mp4")
```

### 其它方法
#### 截取视频片段
```python
video = video.subclip(start, end)
```

#### 截取视频区域
```python
video = video.crop(x1=100, y1=50, x2=400, y2=300)
```

#### 镜像播放
```python
video = video.fx(vfx.mirror_x)
video = video.fx(vfx.mirror_y)
```

#### 修改大小
```python
video = video.resize(0.60)
```

#### 修改播放速度
```python
video = video.fx(vfx.speedx, 0.5)
```

## 音频剪辑
### 示例
```python
from moviepy.editor import VideoFileClip, AudioFileClip

# 从视频提取音频
video = VideoFileClip("./hello.mp4")
audio_clip = video.audio
# 从文件打开音频
audio_clip = AudioFileClip("./hello.mp3")
# 为视频设置音频
video = video.set_audio(audio_clip)
```

### 其它方法
#### 创建无声音频
```python
silent_audio = AudioClip(make_frame=lambda t: [0, 0], duration=1, fps=22050)
```

#### 截取音频片段
```python
# 包含端点
audio = audio.subclip(start, end)
# 不包含端点
audio = audio.crop(t_start, t_end)
```

#### 修改播放速度
```python
audio = audio.fx(afx.speedx, 0.5)
```

#### 调节音量
```python
audio = audio.volumex(2.5)
```

## 图片剪辑
### 示例
```python
from moviepy.editor import ImageClip, AudioFileClip

image_clip = ImageClip("./hello.jpg")
# 设置10秒
image_clip = image_clip.set_duration(10)
# 设置声音
audio_clip = AudioFileClip("./hello.mp3")
image_clip = image_clip.set_audio(audio_clip)
```

### 其它方法
#### 图片裁剪
```python
image_clip = image_clip.crop(x1=100, y1=50, x2=400, y2=300)
```

## 文本剪辑
### 示例
```python
from moviepy.editor import VideoFileClip, TextClip

# 创建视频
video = VideoFileClip("./hello.mp4")
# 创建文本，从第5秒开始，持续6秒
text = TextClip("Hello", font="Arial", fontsize=50, color='white').set_duration(6).set_start(5)
# 合并
video = CompositeVideoClip([video, text])
```

### 其它方法
#### 设置位置
```python
# 底部
text = text.set_position(('bottom'))
# 居中
text = text.align(align="center")
```

#### 设置边距
```python
text =  text.margin(left=0, right=0, bottom=20)
```

#### 设置透明度
```python
text = text.set_opacity(0.8)
```

MoviePy

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