LibreTube/app/src/main/res/drawable/ic_frame.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportWidth="48"
    android:viewportHeight="48"
    android:tint="?android:attr/colorControlNormal">
  <path
      android:fillColor="#FF000000"
      android:pathData="M13.05,21.7 L24.05,4 35.05,21.7ZM35.3,44Q31.6,44 29.1,41.5Q26.6,39 26.6,35.3Q26.6,31.6 29.1,29.1Q31.6,26.6 35.3,26.6Q39,26.6 41.5,29.1Q44,31.6 44,35.3Q44,39 41.5,41.5Q39,44 35.3,44ZM6,42.75V27.55H21.2V42.75Z"/>
</vector>