Python VideoFileClip.close方法代码示例

# 需要导入模块: from moviepy.video.io.VideoFileClip import VideoFileClip [as 别名]
# 或者: from moviepy.video.io.VideoFileClip.VideoFileClip import close [as 别名]
def test_failure_to_release_file():
    """ This isn't really a test, because it is expected to fail.
        It demonstrates that there *is* a problem with not releasing resources when running on 
        Windows.

        The real issue was that, as of movepy 0.2.3.2, there was no way around it.

        See test_resourcerelease.py to see how the close() methods provide a solution.
    """

    # Get the name of a temporary file we can use.
    local_video_filename = join(
        TMP_DIR, "test_release_of_file_%s.mp4" % int(time.time()))

    # Repeat this so we can see that the problems escalate:
    for i in range(5):

        # Create a random video file.
        red = ColorClip((256, 200), color=(255, 0, 0))
        green = ColorClip((256, 200), color=(0, 255, 0))
        blue = ColorClip((256, 200), color=(0, 0, 255))

        red.fps = green.fps = blue.fps = 30
        video = clips_array([[red, green, blue]]).set_duration(1)

        try:
            video.write_videofile(local_video_filename)

            # Open it up with VideoFileClip.
            clip = VideoFileClip(local_video_filename)

            # Normally a client would do processing here.

            # All finished, so delete the clipS.
            clip.close()
            video.close()
            del clip
            del video

        except IOError:
            print(
                "On Windows, this succeeds the first few times around the loop"
                " but eventually fails.")
            print("Need to shut down the process now. No more tests in"
                  "this file.")
            return

        try:
            # Now remove the temporary file.
            # This will fail on Windows if the file is still locked.

            # In particular, this raises an exception with PermissionError.
            # In  there was no way to avoid it.

            remove(local_video_filename)
            print("You are not running Windows, because that worked.")
        except OSError:  # More specifically, PermissionError in Python 3.
            print("Yes, on Windows this fails.")

# 需要导入模块: from moviepy.video.io.VideoFileClip import VideoFileClip [as 别名]
# 或者: from moviepy.video.io.VideoFileClip.VideoFileClip import close [as 别名]

#.........这里部分代码省略.........
        # bind textures
        GL.glActiveTexture(GL.GL_TEXTURE1)
        GL.glBindTexture(GL.GL_TEXTURE_2D, 0)
        GL.glEnable(GL.GL_TEXTURE_2D)
        GL.glActiveTexture(GL.GL_TEXTURE0)
        GL.glBindTexture(GL.GL_TEXTURE_2D, self._texID)
        GL.glEnable(GL.GL_TEXTURE_2D)

        # sets opacity (1,1,1 = RGB placeholder)
        GL.glColor4f(1, 1, 1, self.opacity)

        array = (GL.GLfloat * 32)(
            1, 1,  # texture coords
            vertsPix[0, 0], vertsPix[0, 1], 0.,  # vertex
            0, 1,
            vertsPix[1, 0], vertsPix[1, 1], 0.,
            0, 0,
            vertsPix[2, 0], vertsPix[2, 1], 0.,
            1, 0,
            vertsPix[3, 0], vertsPix[3, 1], 0.,
        )

        # 2D texture array, 3D vertex array
        GL.glInterleavedArrays(GL.GL_T2F_V3F, 0, array)
        GL.glDrawArrays(GL.GL_QUADS, 0, 4)
        GL.glPopClientAttrib()
        GL.glPopMatrix()
        # unbind the textures
        GL.glActiveTexture(GL.GL_TEXTURE0)
        GL.glBindTexture(GL.GL_TEXTURE_2D, 0)
        GL.glEnable(GL.GL_TEXTURE_2D)  # implicitly disables 1D

    def seek(self, t):
        """Go to a specific point in time for both the audio and video streams
        """
        # video is easy: set both times to zero and update the frame texture
        self._nextFrameT = t
        self._videoClock.reset(t)
        self._audioSeek(t)

    def _audioSeek(self, t):
        sound = self.sound
        if self._audioStream is None:
            return  # do nothing
        #check if sounddevice  is being used. If so we can use seek. If not we have to 
        #reload the audio stream and begin at the new loc
        if prefs.general['audioLib'] == ['sounddevice']:
            self._audioStream.seek(t)
        else:
            self._audioStream.stop()
            sndArray = self._mov.audio.to_soundarray()
            startIndex = int(t * self._mov.audio.fps)
            self._audioStream = sound.Sound(
                sndArray[startIndex:, :], sampleRate=self._mov.audio.fps)
            if self.status != PAUSED: #Allows for seeking while paused - JK
                self._audioStream.play()

    def _getAudioStreamTime(self):
        return self._audio_stream_clock.getTime()

    def _unload(self):
        # remove textures from graphics card to prevent crash
        self.clearTextures()
        if self._mov is not None:
            self._mov.close()
        self._mov = None
        self._numpyFrame = None
        if self._audioStream is not None:
            self._audioStream.stop()
        self._audioStream = None
        self.status = FINISHED

    def _onEos(self):
        if self.loop:
            self.seek(0.0)
        else:
            self.status = FINISHED
            self.stop()

        if self.autoLog:
            self.win.logOnFlip("Set %s finished" % self.name,
                               level=logging.EXP, obj=self)

    def __del__(self):
        self._unload()

    def setAutoDraw(self, val, log=None):
        """Add or remove a stimulus from the list of stimuli that will be
        automatically drawn on each flip

        :parameters:
            - val: True/False
                True to add the stimulus to the draw list, False to remove it
        """
        if val:
            self.play(log=False)  # set to play in case stopped
        else:
            self.pause(log=False)
        # add to drawing list and update status
        setAttribute(self, 'autoDraw', val, log)