JupyterLab record an itk-jupyter-widgets bonsai tree volume video

RecordAVideoBonsai.ipynb

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  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Install dependencies for this example\n",
    "# Note: This does not include itk-jupyter-widgets, itself\n",
    "# The page may need to be reloaded after ipywebrtc is installed\n",
    "import sys\n",
    "!{sys.executable} -m pip install itk-io itkwidgets ipywebrtc>=0.4.0"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "try:\n",
    "    from urllib.request import urlretrieve\n",
    "except ImportError:\n",
    "    from urllib import urlretrieve\n",
    "import os\n",
    "\n",
    "import itk\n",
    "\n",
    "from itkwidgets import view\n",
    "import itkwidgets\n",
    "import ipywebrtc as webrtc"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Download data\n",
    "file_name = 'bonsai.nrrd'\n",
    "if not os.path.exists(file_name):\n",
    "    url = 'https://data.kitware.com/api/v1/file/5b8439a98d777f43cc8d4d05/download'\n",
    "    urlretrieve(url, file_name)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "0e1503a473f34011a2266bd3c9eacd17",
       "version_major": 2,
       "version_minor": 0
      },
      "text/plain": [
       "Viewer(annotations=False, cmap='GBBr', rendered_image=<itkImagePython.itkImageUS3; proxy of <Swig Object of ty…"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "image = itk.imread(file_name, pixelType=itk.US)\n",
    "viewer = view(image, cmap=itkwidgets.cm.GBBr, annotations=False)\n",
    "viewer"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "75580566edd8429f9a622b37a925403c",
       "version_major": 2,
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      },
      "text/plain": [
       "VideoRecorder(autosave=True, filename='widget_video.webm', stream=Viewer(annotations=False, cmap='GBBr', gradi…"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "recorder = webrtc.VideoRecorder(stream=viewer, filename='widget_video.webm', autosave=True)\n",
    "recorder"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "In addition to recording, playing back, and downloading videos (shown above), it is possible to take and save screenshots."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "5b8952da189d41be93f5949d1527e3f4",
       "version_major": 2,
       "version_minor": 0
      },
      "text/plain": [
       "ImageRecorder(autosave=True, filename='widget_image', image=Image(value=b''), stream=Viewer(annotations=False,…"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "image_recorder = webrtc.ImageRecorder(stream=viewer, filename='widget_image', autosave=True)\n",
    "image_recorder"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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