Kivy 视频播放器无法在 Raspberry 3B+ 上运行

我刚刚在我的电脑上安装了 Rasbian Stretch 和 KivyRPI3+。我的应用程序工作正常，只是视频未播放。 Rasbian、kivy 和 gstreamer 都是最新的。我的应用程序和视频正在处理KivyPie 0.9b没有任何问题。

Does kivy有手动安装 Raspbian 时播放视频的配置吗？

输出日志：

[INFO ] [MTD ] 旋转设置为 0
[警告] [图像] 无法加载图像
[错误] [图像] 加载纹理时出错./data/images/welcome.mp4
[错误] [VideoGstplayer] GStreamer 遇到一般支持库错误。
[错误] [VideoGstplayer] GStreamer 遇到一般支持库错误。
[错误] [VideoGstplayer] 内部数据流错误。

我尝试了很长时间，因此可以放心地说，无法在树莓派上使用标准的 kivy 视频播放器。

另一种方法是使用 OMXPlayer。我为 OMXPlayer 使用了以下包装器https://github.com/willprice/python-omxplayer-wrapper https://github.com/willprice/python-omxplayer-wrapper也许首先尝试让 Raspberry Pi 上的 OMXPlayer 正常工作。

这是我在树莓派上使用 kivy gui 时编写的用于观看视频的旧脚本

我希望它能有所帮助，并且您可以将其视为寻找自己的解决方案的灵感

主要逻辑是把OMXPlayer放到后台，让kivy透明。参见清除背景

import subprocess
import os


from time import sleep

# https://github.com/willprice/python-omxplayer-wrapper
from omxplayer.player import OMXPlayer

from kivy.app import App
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.screenmanager import Screen
from kivy.lang import Builder
from kivy.properties import ObjectProperty, BooleanProperty

from kivy.core.window import Window

from kivy.clock import Clock



class VideoPlayerScreen(Screen):
    slider = ObjectProperty()
    minimized = BooleanProperty(False)

    @staticmethod
    def clearbckgrnd():
        Window.clearcolor = (0,0,0,0)

    @staticmethod
    def addbckgrnd():
        Window.clearcolor = (0,0,0,1)

    def play(self):
        self.player = OMXPlayer('/home/pi/voice-recognizer-raspi/GUI/test.mp4')
        self.player.set_video_pos(0,0,800,480)
        #self.player.hide_video()
        #self.player.show_video()
        self.set_slider()
        Clock.schedule_once(self.quit, 20)
        Clock.schedule_interval(self.set_slider, 3)


    def playpause(self):
        self.player.play_pause()

    def quit(self, gg, **kwargs):
        self.player.quit()
        App.get_running_app().stop()


    def set_slider(self, *args):
        pos = self.player.position() # in seconds as int
        duration =  self.player.duration() # in seconds as float
        #return pos/duration
        self.slider.value_normalized = pos/duration
        #return 0.5

    def set_videopos(self, *args):
        pos = self.player.position() # in seconds as int
        duration =  self.player.duration() # in seconds as float
        if abs (pos/duration - self.slider.value_normalized) > 0.05:
            self.player.set_position(self.slider.value_normalized*duration)


    def change_size(self):
        #width 800
        #height 480
        if not self.minimized:
            self.player.set_video_pos(2,2,798,418)




class VideoApp(App):
    def build(self):
        return Builder.load_string('''
ScreenManager:
    Screen:
        Button:
            on_press: root.current = "video"
            on_press: self.enabled= False
    VideoPlayerScreen:

<VideoPlayerScreen>:
    slider: slider
    name: "video"
    on_enter: self.clearbckgrnd()
    on_enter: self.play()
    on_pre_leave: self.addbckgrnd()
    BoxLayout:
        orientation: 'vertical'
        Button:
            size_hint_y: 420
            #text: "play"
            on_press: print('button to minimize pressed')
            on_press: root.change_size()
            background_color: (0,0,0,1)
            Image:
                source: './Infinity.gif'
                height: self.parent.height / 1.5 
                y: self.parent.y + self.parent.height /2 - self.height / 2
                x: self.parent.x + self.parent.width / 2 - self.width / 2
                allow_stretch: False
        BoxLayout:
            orientation: 'vertical'
            size_hint_y: 60
            Slider:
                id: slider
                on_value: root.set_videopos(self.value_normalized)
                #value_normalized: root.set_slider
            BoxLayout:
                Button:
                    text: 'Play/Pause'
                    on_press: root.playpause()

''')

if __name__ == "__main__":
    video = VideoApp()
    try:
        video.run()
    except KeyboardInterrupt:
        video.stop()
        os.system('killall dbus-daemon')