Hard control (best UX)

Combine:

  • start param

  • JS control (pause at end)

  • Hide controls (optional)

playerVars: {
controls: 0,
modestbranding: 1,
}

🚫 What you CANNOT do (Important)

  • You cannot truly restrict video length permanently

  • YouTube doesn’t allow trimming videos dynamically

  • For full control → you must:

    • Download + host video yourself (not recommended due to copyright)

💡 Pro Suggestion (Best Practice)

For your use-case (like product/demo trailer):

👉 Do this:

  1. Play only 10–30 sec using start/end

  2. Add button:

    • "Watch full video on YouTube"