How to catch Android share intents limited to specific URLs using intent-filter?

I can hook my app into the "Share page" feature using the following intent-filter:

<intent-filter>
  <action android:name="android.intent.action.SEND" />
  <category android:name="android.intent.category.DEFAULT" />
  <data android:mimeType="text/plain" />

But I would like to go a little further and limit the filter to intents with specific URLs in them, for example URL of a YouTube video. I tried something like this but it doesn't work:

<intent-filter>
  <action android:name="android.intent.action.SEND" />
  <category android:name="android.intent.category.DEFAULT" />
  <data
    android:mimeType="text/plain"
    android:scheme="http"
    android:host="m.youtube.com"
  />

Any suggestions?