Python VLC MediaPlayer - 设置字幕延迟

在本文中，我们将看到如何在Python vlc 模块中设置 MediaPlayer 对象的字幕延迟。 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。字幕是从电影、电视节目、视频游戏等中对话或评论的抄本或剧本衍生而来的文本，通常显示在屏幕底部，但如果有，也可以在屏幕顶部屏幕底部已经有文字。字幕延迟会影响字幕显示的时间。正值会导致字幕显示较晚，而负值会导致字幕显示较早。每次媒体更改时，字幕延迟将重置为零。

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

Syntax : media_player.video_set_spu_delay(n) 

Argument : It takes integer as argument i.e milliseconds 

Return : It returns 0 on success, -1 on error

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 subtitle delay
media_player.video_set_spu_delay(100)
 
# setting video scale
media_player.video_set_scale(0.6)
 
# 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 ： 另一个例子下面是实现

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 video scale
media_player.video_set_scale(0.6)
 
# setting subtitle delay
media_player.video_set_spu_delay(100)
 
 
# 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 ：