recording_video.ipynb

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   "source": [
    "# Recording Video in OpenCV"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import cv2\n",
    "import os"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 20,
   "metadata": {},
   "outputs": [],
   "source": [
    "filename = 'video.avi'\n",
    "frames_per_second = 24.0\n",
    "my_res = '720p'\n",
    "\n",
    "\n",
    "def change_res(cap, width, height):\n",
    "    cap.set(3, width)\n",
    "    cap.set(4, height)\n",
    "\n",
    "\n",
    "STD_DIMENSIONS =  {\n",
    "    \"480p\": (640, 480),\n",
    "    \"720p\": (1280, 720),\n",
    "    \"1080p\": (1920, 1080),\n",
    "    \"4k\": (3840, 2160),\n",
    "}\n",
    "\n",
    "\n",
    "def get_dims(cap, res='1080p'):\n",
    "    width, height = STD_DIMENSIONS[\"480p\"]\n",
    "    if res in STD_DIMENSIONS:\n",
    "        width,height = STD_DIMENSIONS[res]\n",
    "    change_res(cap, width, height)\n",
    "    return width, height\n",
    "\n",
    "\n",
    "VIDEO_TYPE = {\n",
    "    'avi': cv2.VideoWriter_fourcc(*'XVID'),\n",
    "    'mp4': cv2.VideoWriter_fourcc(*'XVID'),\n",
    "}\n",
    "\n",
    "def get_video_type(filename):\n",
    "    filename, ext = os.path.splitext(filename)\n",
    "    if ext in VIDEO_TYPE:\n",
    "        return VIDEO_TYPE[ext]\n",
    "    return VIDEO_TYPE['avi']\n",
    "\n",
    "\n",
    "\n",
    "cap = cv2.VideoCapture(0)\n",
    "out = cv2.VideoWriter(filename, get_video_type(filename), frames_per_second, get_dims(cap, my_res))\n",
    "\n",
    "while True:\n",
    "    ret, frame = cap.read()\n",
    "    out.write(frame)\n",
    "    cv2.imshow('frame',frame)\n",
    "    if cv2.waitKey(1) & 0xFF == ord('q'):\n",
    "        break\n",
    "\n",
    "\n",
    "cap.release()\n",
    "out.release()\n",
    "cv2.destroyAllWindows()"
   ]
  },
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