omxplayer的安装与使用
需要用python来控制播放视频，所以就找到了这个播放器，很好用。
看了官网文档，安装使用都写的比较明白了。
官网地址：https://python-omxplayer-wrapper.readthedocs.io/en/latest/#
安装：
pip3 install omxplayer-wrapper
使用：
from omxplayer import OMXPlayer
from pathlib import path
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BOARD)
GPIO.setup(40, GPIO.IN)
VIDEO_PATH = Path('my.mp4')
player = OMXPlayer(VIDEO_PATH, args = '-b -o local' )
while Ture:
if (GPIO.input(40) == GPIO.HIGH):
break
player.quit()
参数：
这些参数是在终端时候用的，在Python中如何使用，还需要摸索，但是一帮的可以加载args作为参数就能使用。
开始前：
omxplayer --help
Usage: omxplayer [OPTIONS] [FILE]
-h --help Print this help
-v --version Print version info
-k --keys Print key bindings
-n --aidx index Audio stream index : e.g. 1
-o --adev device Audio out device : e.g. hdmi/local/both
-i --info Dump stream format and exit
-I --with-info dump stream format before playback
-s --stats Pts and buffer stats
-p --passthrough Audio passthrough
-d --deinterlace Force deinterlacing
--nodeinterlace Force no deinterlacing
--nativedeinterlace let display handle interlace
--anaglyph type convert 3d to anaglyph
--advanced Allow advanced deinterlace for HD videos
-w --hw Hw audio decoding
-3 --3d mode Switch tv into 3d mode (e.g. SBS/TB)
-M --allow-mvc Allow decoding of both views of MVC stereo stream
-y --hdmiclocksync Display refresh rate to match video (default)
-z --nohdmiclocksync Do not adjust display refresh rate to match video
-t --sid index Show subtitle with index
-r --refresh Adjust framerate/resolution to video
-g --genlog Generate log file
-l --pos n Start position (hh:mm:ss)
-b --blank Set background to black
播放中：
z Show Info
1 Decrease Speed
2 Increase Speed
j Previous Audio stream
k Next Audio stream
i Previous Chapter
o Next Chapter
n Previous Subtitle stream
m Next Subtitle stream
s Toggle subtitles
d Subtitle delay -250ms
f Subtitle delay +250ms
q Exit Omxplayer
- Decrease Volume
+ increase Volume
Left Arrow Seek -30s
Right Arrow Seek +30s
Down Arrow Seek -600s
Up Arrow Seek +600s
Space or p Pasue/Resume
至此就结束了，希望可以帮助到大家！