What is M3U8?
Learn about M3U8 files and how they work with HLS streaming.
8 min read
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オンラインビデオプレーヤーツール
様々なビデオフォーマットをサポートするオンラインプレーヤー
M3U8 / HLS の再生・検証・デバッグ・埋め込み向けの無料ブラウザツール。DASH と MP4 にも対応します。
関連ツール
再生テストから解析、ダウンロード、変換、埋め込みまでサイト内で進められます。
ガイドとツール
M3U8 再生、HLS 検証、トラブルシュート、埋め込み向けの入口です。
M3U8 をテストして再生する
ブラウザ内で M3U8 / HLS リンクが再生可能かを素早く確認できます。
M3U8 とは何か
M3U8、HLS、ストリーミングプレイリストの基本を整理します。
M3U8 Downloader
公開 HLS プレイリストを取得し、ブラウザ内でローカル保存できます。
M3U8 Converter
ブラウザからアクセスできるプレイリストを一般的な動画形式へ変換します。
M3U8 アナライザー
プレイリスト種別、ビットレート、解像度、トラック、セグメント数を確認できます。
埋め込みプレーヤー生成
M3U8、HLS、DASH、MP4 向けの埋め込みコードを生成できます。
? Frequently Asked Questions
Common questions and answers to help you use the player more effectively.
What is an M3U8 file?
An M3U8 file is a UTF-8 playlist used for HLS streaming. It lists media segments or variant playlists instead of storing the actual video itself.
How can I play an M3U8 file online?
Paste a valid M3U8 URL into our free online player and press play. The stream will load directly in your browser without extra software.
Is your M3U8 player compatible with all devices?
It works on most modern browsers and platforms, including Windows, macOS, iPhone, iPad, and Android devices.
What is the difference between M3U and M3U8?
M3U is the older playlist format, while M3U8 is the UTF-8 encoded version commonly used for HLS streaming and multilingual file names.
Can I embed your M3U8 player into my own website?
Yes. You can generate embed code from the player and place the iframe snippet into your own HTML page or CMS.
Is it legal to stream public M3U8 links?
You should only test or share streams that you are authorized to access. Always verify the content source and distribution rights before using a public link.
Does your player support live and on-demand streams?
Yes. The player can be used for both live HLS streams and video-on-demand playback, depending on the source playlist.
What is HLS streaming?
HLS stands for HTTP Live Streaming, a protocol that breaks media into small chunks and lets the player adapt quality based on network conditions.
My M3U8 stream will not play. What could be wrong?
Common causes include expired URLs, CORS restrictions, mixed-content blocking, unsupported codecs, missing segments, or private stream permissions.
Is there a limit to how many streams I can test?
No. You can test as many streams as you need for personal workflows, diagnostics, or development checks.