match() not working with regex expression

    const contentWithVideo = `
<p><br></p>
<video style="max-width: 50%; height: auto;" controls="">
  <source src="http://chartbeat-datastream-storage.s3.ap-south-1.amazonaws.com/wp-content/uploads/2024/08/1723616374/SampleVideo_1280x720_30mb.mp4" type="video/mp4">
  Your browser does not support the video tag.
</video>`;

    // Find the <video> tag with its source URL
    const videoTagRegex = /<video[^>]*>s*<sources+src=['"]([^'"]+)['"]s+type=['"]([^'"]+)['"][^>]*>s*</video>/is;

    // Using exec() to match the content
    const matchResult = videoTagRegex.exec(contentWithVideo);

the code must match the video tag in given variable but its returning null

• i have tried various methods but nothing is working
  if anyone understand where i m going worng please let me know

i have tried changing the expression at first but soon i understand match() is not working with regex