VideoReader speed test

Untitled.ipynb

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      "source": "from smu.visualise.video import VideoReader\nfrom tqdm import tqdm",
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      "source": "%%timeit\n\nall_frames = np.array(list(\n    VideoReader('/Users/dsuess/Downloads/SJ4000 _ Short Cinematic Test Video-geaY4_obGnU.mp4')))",
      "execution_count": 5,
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          "text": "16.5 s ± 1.67 s per loop (mean ± std. dev. of 7 runs, 1 loop each)\n",
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      "source": "sample_frames = np.array(list(tqdm(\n    VideoReader('/Users/dsuess/Downloads/SJ4000 _ Short Cinematic Test Video-geaY4_obGnU.mp4', 100, None))))\n\nnp.abs(sample_frames - all_frames[100:]).max()",
      "execution_count": 8,
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          "text": "2585it [00:06, 398.01it/s]\n",
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      "metadata": {
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      "cell_type": "code",
      "source": "%%timeit\n\nnp.array(list(\n    VideoReader('/Users/dsuess/Downloads/SJ4000 _ Short Cinematic Test Video-geaY4_obGnU.mp4', 1292, None)))",
      "execution_count": 11,
      "outputs": [
        {
          "output_type": "stream",
          "text": "6.81 s ± 285 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)\n",
          "name": "stdout"
        }
      ]
    },
    {
      "metadata": {
        "trusted": true
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      "cell_type": "code",
      "source": "sample_frames = np.array(list(tqdm(\n    VideoReader('/Users/dsuess/Downloads/SJ4000 _ Short Cinematic Test Video-geaY4_obGnU.mp4', 1000))))\n\nnp.abs(sample_frames - all_frames[:1000]).max()",
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      "cell_type": "code",
      "source": "%%timeit\n\nnp.array(list(\n    VideoReader('/Users/dsuess/Downloads/SJ4000 _ Short Cinematic Test Video-geaY4_obGnU.mp4', 1292)))",
      "execution_count": 13,
      "outputs": [
        {
          "output_type": "stream",
          "text": "5.06 s ± 31.3 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)\n",
          "name": "stdout"
        }
      ]
    },
    {
      "metadata": {
        "trusted": true
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      "cell_type": "code",
      "source": "sample_frames = np.array(list(tqdm(\n    VideoReader('/Users/dsuess/Downloads/SJ4000 _ Short Cinematic Test Video-geaY4_obGnU.mp4', None, None, 10))))\n\nnp.abs(sample_frames - all_frames[::10]).max()",
      "execution_count": 14,
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          "output_type": "stream",
          "text": "269it [00:12, 21.04it/s]\n",
          "name": "stderr"
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          "execution_count": 14,
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    {
      "metadata": {
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      "cell_type": "code",
      "source": "sample_frames = np.array(list(tqdm(\n    VideoReader('/Users/dsuess/Downloads/SJ4000 _ Short Cinematic Test Video-geaY4_obGnU.mp4', None, None, 100))))\n\nnp.abs(sample_frames - all_frames[::100]).max()",
      "execution_count": 15,
      "outputs": [
        {
          "output_type": "stream",
          "text": "27it [00:01, 20.50it/s]\n",
          "name": "stderr"
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        {
          "output_type": "execute_result",
          "execution_count": 15,
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    {
      "metadata": {
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      "cell_type": "code",
      "source": "sample_frames = np.array(list(tqdm(\n    VideoReader('/Users/dsuess/Downloads/SJ4000 _ Short Cinematic Test Video-geaY4_obGnU.mp4', 342, 2153, 10))))\n\nnp.abs(sample_frames - all_frames[342:2153:10]).max()",
      "execution_count": 16,
      "outputs": [
        {
          "output_type": "stream",
          "text": "182it [00:08, 24.43it/s]\n",
          "name": "stderr"
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          "output_type": "execute_result",
          "execution_count": 16,
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