Python VLC MediaPlayer – 设置播放速率

在本文中，我们将看到如何在Python vlc 模块中设置 MediaPlayer 对象的媒体播放速率。 VLC媒体播放器是VideoLAN项目开发的一款免费开源的便携式跨平台媒体播放软件和流媒体服务器。 MediaPlayer 对象是 vlc 模块中用于播放视频的基本对象。我们可以借助 MediaPlayer 方法创建一个 MediaPlayer 对象。媒体播放速率基本上就是视频的速度，越多视频播放的速率越快，默认值是1.0，为了减慢视频设置速率值小于1。

In order to do this we will use set_rate method with the MediaPlayer object 

Syntax : media_player.set_rate(n) 

Argument : It takes float value as argument 

Return : It returns None

下面是实现

Python3

# importing vlc module
import vlc
 
# importing time module
import time
 
 
# creating vlc media player object
media_player = vlc.MediaPlayer()
 
# media object
media = vlc.Media("death_note.mkv")
 
# setting media to the media player
media_player.set_media(media)
 
# setting play rate
# doubles the speed of the video
media_player.set_rate(2)
 
 
# start playing video
media_player.play()
 
# wait so the video can be played for 5 seconds
# irrespective for length of video
time.sleep(5)

输出 ： 此媒体以 2x 的速度播放 另一个示例 下面是实现

Python3

# importing vlc module
import vlc
 
# importing time module
import time
 
# creating vlc media player object
media_player = vlc.MediaPlayer()
 
# media object
media = vlc.Media("1mp4.mkv")
 
# setting media to the media player
media_player.set_media(media)
 
# setting play rate
# halves the speed of the video
media_player.set_rate(0.5)
 
 
# start playing video
media_player.play()
 
# wait so the video can be played for 5 seconds
# irrespective for length of video
time.sleep(5)

输出 ： 此视频速度减慢 50%