ffmpeg-python/examples/ffmpeg-numpy.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 116,
   "metadata": {},
   "outputs": [],
   "source": [
    "from ipywidgets import interact\n",
    "from matplotlib import pyplot as plt\n",
    "import ffmpeg\n",
    "import ipywidgets as widgets\n",
    "import numpy as np"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 117,
   "metadata": {},
   "outputs": [],
   "source": [
    "probe = ffmpeg.probe('in.mp4')\n",
    "video_info = next(stream for stream in probe['streams'] if stream['codec_type'] == 'video')\n",
    "width = int(video_info['width'])\n",
    "height = int(video_info['height'])\n",
    "num_frames = int(video_info['nb_frames'])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 118,
   "metadata": {},
   "outputs": [],
   "source": [
    "out, err = (\n",
    "    ffmpeg\n",
    "    .input('in.mp4')\n",
    "    .output('pipe:', format='rawvideo', pix_fmt='rgb24')\n",
    "    .run(capture_stdout=True)\n",
    ")\n",
    "video = (\n",
    "    np\n",
    "    .frombuffer(out, np.uint8)\n",
    "    .reshape([-1, height, width, 3])\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 115,
   "metadata": {},
   "outputs": [
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       "model_id": "17d13d7551114fb39a1fad933cf0398a",
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      "text/plain": [
       "interactive(children=(IntSlider(value=0, description='frame', max=209), Output()), _dom_classes=('widget-inter…"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "@interact(frame=(0, num_frames))\n",
    "def show_frame(frame=0):\n",
    "    plt.imshow(video[frame,:,:,:])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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