Video Tools
Add Subtitles to Video
Burn SRT subtitles into video or type them manually.
Your files stay on your device - processed locally via WebAssembly, never uploaded
Drop a video file or click to upload
MP4, WebM, MOV, AVI, MKV
Your videos are processed locally in your browser. Nothing is uploaded to any server.
Embed this tool on your website
Copy this code to add the Add Subtitles to Video to your site for free. It runs entirely in your visitors' browsers - no API key, no usage limits.
<iframe src="https://optipix.art/embed/add-subtitles" width="100%" height="600" style="border:1px solid #e4e4e7;border-radius:8px;" title="Add Subtitles to Video by OptiPix" loading="lazy"></iframe> <p style="font-size:12px">Free tool by <a href="https://optipix.art/add-subtitles">OptiPix Add Subtitles to Video</a></p>
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About Add Subtitles to Video
Last updated: May 2026
OptiPix Add Subtitlesは、ビデオピクセルに直接字幕テキストを焼き付けます。ビデオとSRTファイルをアップロードするか、タイムスタンプ付きで字幕を手動で入力します。フォントサイズと位置をカスタマイズします。字幕は永続的に埋め込まれるため、個別の字幕ファイルなしでどのプレーヤーでも表示されます。FFmpeg.wasm字幕フィルターを使用します。
How It Works
FFmpeg.wasm -vf subtitlesフィルターはSRTファイルを読み込み、指定されたタイムスタンプでビデオフレームにテキストを焼き付けます。
Use Cases
- •アクセシビリティのためのキャプションを追加
- •ソーシャルメディア用の字幕を焼き付け
- •ビデオに翻訳を追加
- •字幕付きチュートリアルを作成
- •キャプションがどこでも表示されるようにする
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