PodSplice

How to Record YouTube Audio in a Reaction Video on Mac (Without QuickTime or Plugins)

AAndrew Best

Quick answer: Use Podsplice. It runs in your browser (Safari, Chrome, Edge) and records everything you need—no QuickTime workarounds, no OBS plugins, no Soundflower/BlackHole.

What Podsplice Captures (in the browser)

Podsplice records four separate, local tracks and syncs them automatically:

  • 🎤 Mic (your commentary)

  • 📷 Camera (your face)

  • 🖥️ Screen (what you’re reacting to)

  • 🔊 System audio (the actual YouTube audio)

Want the full walkthrough? See How to Make a Reaction Video (Step-by-Step) (link).

The Mac Recording Problem

  • QuickTime Player: Records screen + mic, not internal/system audio (unless you install Soundflower/BlackHole).

  • OBS Studio (Mac): Can work, but setup is complex and usually requires virtual audio devices.

  • Canva, Riverside, Descript (on Mac): Record mic/webcam, but generally miss system audio—so your YouTube clip is silent.

I learned this the hard way—recorded a full reaction in Canva, opened it to edit, and the YouTube audio wasn’t there at all. Then I tested others and realized this is common.

Why System Audio on Mac Is Harder Than You’d Guess

  • Browser limitations: Safari/Chrome/Edge don’t hand over system audio easily for privacy/technical reasons.

  • Sync complexity: Keeping mic + camera + screen + system audio perfectly aligned is non-trivial. Many tools just skip system audio to avoid drift and support headaches.

How Podsplice Solves It (Mac-Friendly)

  • Works in Safari, Chrome, Edge—no plugins, no drivers.

  • Captures all four feeds locally in full quality; auto-syncs them.

  • Same simple workflow on MacBook, iMac, or Mac mini.

Quick Start on Mac

  1. Open your YouTube video (Safari/Chrome) and queue it.

  2. Open Podsplice in another tab.

  3. Select mic + camera and enable Share system audio.

  4. Record, react, stop—Podsplice saves separate tracks for clean editing.

Bottom Line

Mac tools like QuickTime (no system audio), OBS (complex setup), and Canva/Riverside/Descript (skip system audio) make reaction videos harder than they should be. Podsplice records the screen, face, mic, and YouTube audio—all in sync—right in your browser.

👉 Try Podsplice now and capture reaction videos the way your audience expects to hear them.

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