python kivy 添加背景視頻mp4

Question

是否可以在 kivy 中播放視頻（mp4）作為背景？ 我正在使用下面的代碼，但沒有加載視頻.....

__author__ = 'kshk'
import kivy
kivy.require('1.8.0')

from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.gridlayout import  GridLayout
from kivy.uix.textinput import TextInput
from kivy.uix.video import Video

class Dashboard(GridLayout):
    def __init__(self, **kwargs):
        super(Dashboard,self).__init__(**kwargs)
        self.cols = 2
        self.add_widget(Label(text="Login"))
        self.username = TextInput(multiline=False)
        self.add_widget(self.username)
        self.add_widget(Label(text="Password"))
        self.password = TextInput(password=True,multiline=False)
        self.add_widget(self.password)
        self.video = Video(source="/tmpt/driver.mp4")
        self.add_widget(self.video)

class MyApp(App):
    def build(self):
        return Dashboard()

if __name__ == '__main__':
    MyApp().run()

更新：

日志：

/usr/bin/python /home/kshk/PycharmProjects/KSHK-PYQT1/main.py
[INFO              ] Kivy v1.8.0
[INFO              ] [Logger      ] Record log in /home/kshk/.kivy/logs/kivy_14-07-13_58.txt
[INFO              ] [Factory     ] 157 symbols loaded
[DEBUG             ] [Cache       ] register <kv.lang> with limit=None, timeout=Nones
[DEBUG             ] [Cache       ] register <kv.image> with limit=None, timeout=60s
[DEBUG             ] [Cache       ] register <kv.atlas> with limit=None, timeout=Nones
[INFO              ] [Image       ] Providers: img_tex, img_dds, img_pygame, img_pil, img_gif 
[DEBUG             ] [Cache       ] register <kv.texture> with limit=1000, timeout=60s
[DEBUG             ] [Cache       ] register <kv.shader> with limit=1000, timeout=3600s
[INFO              ] [Text        ] Provider: pygame
[DEBUG             ] [Cache       ] register <kv.loader> with limit=500, timeout=60s
[INFO              ] [Loader      ] using a thread pool of 2 workers
[DEBUG             ] [Cache       ] register <textinput.label> with limit=None, timeout=60.0s
[DEBUG             ] [Cache       ] register <textinput.width> with limit=None, timeout=60.0s
[DEBUG             ] [Video       ] Ignored <pygst> (import error)
[DEBUG             ] [Video       ] Ignored <ffmpeg> (import error)
[DEBUG             ] [Video       ] Ignored <pyglet> (import error)
[INFO              ] [Video       ] Provider: null(['video_pygst', 'video_ffmpeg', 'video_pyglet'] ignored)
[DEBUG             ] [App         ] Loading kv </home/kshk/PycharmProjects/KSHK-PYQT1/my.kv>
[DEBUG             ] [App         ] kv </home/kshk/PycharmProjects/KSHK-PYQT1/my.kv> not found
[DEBUG             ] [Window      ] Ignored <egl_rpi> (import error)
[INFO              ] [Window      ] Provider: pygame(['window_egl_rpi'] ignored)
libpng warning: iCCP: known incorrect sRGB profile
[WARNING           ] [WinPygame   ] Video: failed (multisamples=2)
[WARNING           ] [WinPygame   ] trying without antialiasing
[DEBUG             ] [Window      ] Display driver x11
[DEBUG             ] [Window      ] Actual window size: 800x600
[DEBUG             ] [Window      ] Actual color bits r8 g8 b8 a0
[DEBUG             ] [Window      ] Actual depth bits: 24
[DEBUG             ] [Window      ] Actual stencil bits: 8
[DEBUG             ] [Window      ] Actual multisampling samples: 0
[INFO              ] [GL          ] OpenGL version <2.1 Mesa 10.1.5>
[INFO              ] [GL          ] OpenGL vendor <VMware, Inc.>
[INFO              ] [GL          ] OpenGL renderer <Gallium 0.4 on llvmpipe (LLVM 3.4, 256 bits)>
[INFO              ] [GL          ] OpenGL parsed version: 2, 1
[INFO              ] [GL          ] Shading version <1.30>
[INFO              ] [GL          ] Texture max size <8192>
[INFO              ] [GL          ] Texture max units <16>
[DEBUG             ] [Shader      ] Fragment compiled successfully
[DEBUG             ] [Shader      ] Vertex compiled successfully
[DEBUG             ] [ImagePygame ] Load </usr/lib/python2.7/site-packages/kivy/data/glsl/default.png>
[INFO              ] [Window      ] virtual keyboard not allowed, single mode, not docked
[DEBUG             ] [Atlas       ] Load </usr/lib/python2.7/site-packages/kivy/data/../data/images/defaulttheme.atlas>
[DEBUG             ] [Atlas       ] Need to load 1 images
[DEBUG             ] [Atlas       ] Load </usr/lib/python2.7/site-packages/kivy/data/../data/images/defaulttheme-0.png>
[DEBUG             ] [ImagePygame ] Load </usr/lib/python2.7/site-packages/kivy/data/../data/images/defaulttheme-0.png>
[INFO              ] [OSC         ] using <multiprocessing> for socket
[DEBUG             ] [Base        ] Create provider from mouse
[DEBUG             ] [Base        ] Create provider from probesysfs
[DEBUG             ] [ProbeSysfs  ] using probsysfs!
[INFO              ] [Base        ] Start application main loop
[INFO              ] [GL          ] NPOT texture support is available
[INFO              ] [Base        ] Leaving application in progress...

更新：現在我正在嘗試使用 AnchorLayout 並將視頻添加到背景中，並在前面使用 GridLayout ....

主文件

__author__ = 'kshk'
import kivy
kivy.require('1.8.0')

from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.gridlayout import  GridLayout
from kivy.uix.textinput import TextInput
from kivy.uix.video import Video
from kivy.uix.widget import Widget
from kivy.uix.anchorlayout import AnchorLayout

class MyWidget(Widget):
    pass

class WidgetsApp(App):
    def build(self):
        return MyWidget()
if __name__ == '__main__':
    WidgetsApp().run()

小部件.kv

#File widgets.kv
#:kivy 1.8.0
<MyWidget>:
AnchorLayout:
    Video:
        source: 'driver.avi'
        size: 100,100
    GridLayout:
        Button:
            text: 'Hello'
            pos: 0,100
            size: 100, 50
            color: .8, .9, 0, 1
            font_size: 32
        Button:
            text: 'World!'
            pos: 100,0
            size: 100, 50
            color: .8, .9, 0, 1
            font_size: 32

我得到的只是黑屏！...

更新：

我指出了這個錯誤……知道如何獲得這個插件嗎？ 我已經安裝了 gstreamer。

[DEBUG             ] [VideoPyGst  ] Load <driver.mp4>
** Message: don't know how to handle video/x-h264, stream-format=(string)byte-stream, alignment=(string)au, level=(string)4.2, profile=(string)main, width=(int)1920, height=(int)1080, framerate=(fraction)2997/125, pixel-aspect-ratio=(fraction)1/1, parsed=(boolean)true
[ERROR             ] [VideoPyGst  ] There is no codec present that can handle the stream's type.
[DEBUG             ] [VideoPyGst  ] gstplaybasebin.c(2323): prepare_output (): /GstPlayBin:playbin
[ERROR             ] [VideoPyGst  ] GStreamer encountered a general stream error.
[DEBUG             ] [VideoPyGst  ] qtdemux.c(3891): gst_qtdemux_loop (): /GstPlayBin:playbin/GstDecodeBin:decodebin0/GstQTDemux:qtdemux0:
streaming stopped, reason not-linked
[INFO              ] [Base        ] Leaving application in progress...

更新：

在 mac 上工作，沒有問題，所以看起來像 Fedora 上的插件問題....:(

Answer 1

是否可以在 kivy 中播放視頻（mp4）作為背景？

是的，只需將視頻放在您想要顯示的任何其他內容之后。 您的示例不會這樣做，因為它是 gridlayout 的一部分，您可能想做一些事情，例如使用 AnchorLayout 將兩個孩​​子放在同一個地方（這不是唯一的方法，但很簡單）。

AnchorLayout:
    Video:
        source: 'whatever'
    GridLayout:
        # ... <- your normal stuff goes here

至於為什么你的視頻不顯示，我不知道。 您確定文件路徑有效嗎？ 你在終端中得到任何關於它的日志嗎？

Answer 2

我得到的只是黑屏！...

回答這個黑屏問題，也許你沒有將 python 文件與 .kv 文件鏈接起來。 這兩個文件的鏈接應該是 Builder.load_file()..

例如..

...
from kivy.uix.anchorlayout import AnchorLayout

Builder.load_file("widgets.kv")

class MyWidget(Widget):
    pass
...

希望這有幫助。