.. note::
    :class: sphx-glr-download-link-note

    Click :ref:`here <sphx_glr_download_auto_examples_viz_play_video.py>` to download the full example code
.. rst-class:: sphx-glr-example-title

.. _sphx_glr_auto_examples_viz_play_video.py:


=======================================================
Play a video in the 3D world
=======================================================

The goal of this demo is to show how to visualize a video
on a rectangle by updating a texture.







.. code-block:: default


    from fury import window, actor
    import numpy as np
    import cv2

    import time


    # The VideoCapturer Class
    # This Class wraps OpenCV Videocapture
    class VideoCapturer:

        def __init__(self, video, time):
            self.path = video
            self.video = cv2.VideoCapture(self.path)
            self.fps = int(self.video.get(cv2.CAP_PROP_FPS))
            self.frames = int(self.video.get(cv2.CAP_PROP_FRAME_COUNT))
            self.time = time

        # A generator to yield video frames on every call
        def get_frame(self):
            start = time.time()
            for _ in range(self.frames):
                isframe, frame = self.video.read()
                dur = time.time() - start
                if dur > self.time:
                    break
                if isframe:
                    yield cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
            self.video.release()
            yield None


    class VideoPlayer:

        def __init__(self, video, time=10):
            # Initializes the Video object with the given Video
            self.video = VideoCapturer(video, time)
            self.video_generator = self.video.get_frame()
            self.current_video_frame = next(self.video_generator)
            # Initialize Scene
            self.initialize_scene()
            # Create a Show Manager and Initialize it
            self.show_manager = window.ShowManager(self.scene,
                                                   size=(900, 768),
                                                   reset_camera=False,
                                                   order_transparent=True)
            self.show_manager.initialize()

        # Initialize the Scene with actors
        def initialize_scene(self):
            self.scene = window.Scene()
            # Initialize a Plane actor with the 1st video frame along with
            # the actor grid which is to be updated in each iteration
            self.plane_actor = actor.texture(self.current_video_frame)
            self.scene.add(self.plane_actor)

        # The timer_callback function getting called by the show manager
        def timer_callback(self, _obj, _event):
            self.current_video_frame = next(self.video_generator)
            if isinstance(self.current_video_frame, np.ndarray):
                # update texture of the actor with the current frame image
                # by updating the actor grid
                actor.texture_update(self.plane_actor, self.current_video_frame)
                self.show_manager.scene.azimuth(1.5)  # to rotate the camera
            else:
                self.show_manager.exit()
            self.show_manager.render()

        def run(self):
            # Add a timer callback to show manager after with
            # video frame duration as the interval
            self.frame_duration = int(1000/self.video.fps)
            self.show_manager.add_timer_callback(True,
                                                 self.frame_duration,
                                                 self.timer_callback)
            self.show_manager.start()


    # Create VideoPlayer Object and run it
    video_url = "http://commondatastorage.googleapis.com/" +\
                "gtv-videos-bucket/sample/BigBuckBunny.mp4"
    VideoPlayer(video_url).run()


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** ( 0 minutes  11.051 seconds)


.. _sphx_glr_download_auto_examples_viz_play_video.py:


.. only :: html

 .. container:: sphx-glr-footer
    :class: sphx-glr-footer-example



  .. container:: sphx-glr-download

     :download:`Download Python source code: viz_play_video.py <viz_play_video.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: viz_play_video.ipynb <viz_play_video.ipynb>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_