M3U8 URLの抽出方法 - 開発者ガイド [2025]

実際のストリーミングページからプレイリストマニフェストを数分で見つける方法を学びます。

Introduction

Learn how to surface M3U8 playlist URLs from streaming pages so you can debug playback, monitor delivery, or load manifests into tooling. This guide highlights fast, reproducible techniques that do not rely on browser extensions or guesswork.

Method 1: Browser DevTools

  1. Open the target page and launch DevTools with F12 or ⌥⌘I.
  2. Switch to the Network panel and type .m3u8 into the filter box.
  3. Start video playback to populate live requests.
  4. Locate a request returning index.m3u8, master.m3u8, or similar.
  5. Right-click the request and copy the full URL, including query parameters.

DevTools is the fastest source of truth because it captures the exact manifest the browser uses, even when it is generated dynamically by player scripts.

Method 2: Inspect HTML Source

Source inspection helps when the playlist is hard-coded, preloaded as JSON, or rendered server-side before the player boots.

Method 3: Using Our Tools

Try our M3U8 Player. Paste any page URL or playlist and the player will request manifests, surface detected variants, and preview playback without extra setup.

Tips

FAQ

Where are M3U8 URLs usually found?
They commonly appear in player JavaScript configs, API responses, or manifest files fetched during playback.
Can I reuse a captured URL indefinitely?
Not always. Many providers attach expiring tokens or IP restrictions, so validate the URL before automation.
Do I need special tools?
DevTools is often enough, but dedicated players like ours streamline validation and troubleshooting.