Video Tools
Video to MP4 Converter
Convert any video format to MP4 (H.264 + AAC) with quality controls.
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, FLV, WMV
Your videos are processed locally. Nothing is uploaded.
Embed this tool on your website
Copy this code to add the Video to MP4 Converter to your site for free. It runs entirely in your visitors' browsers - no API key, no usage limits.
<iframe src="https://optipix.art/embed/video-to-mp4" width="100%" height="600" style="border:1px solid #e4e4e7;border-radius:8px;" title="Video to MP4 Converter by OptiPix" loading="lazy"></iframe> <p style="font-size:12px">Free tool by <a href="https://optipix.art/video-to-mp4">OptiPix Video to MP4 Converter</a></p>
❤️ Love this tool? Support our team.
No ads, no tracking, no limits. Tips keep 104 tools free for everyone.
Secure payment via Stripe · No account needed
About Video to MP4 Converter
Last updated: May 2026
OptiPix Video to MP4 Converter は、あらゆるビデオフォーマットを、広く互換性のあるMP4（H.264ビデオ + AACオーディオ）に変換します。MOV、WebM、AVI、MKV、FLV、またはWMVファイルをアップロードしてください。品質プリセット（高、標準、低）を選択するか、カスタムCRF値を設定します。解像度は4Kから480pまで制御可能です。プロフェッショナルなエンコーディングのためにFFmpeg.wasmを使用します。
How It Works
FFmpeg.wasmは、普遍的なMP4出力を得るために、-c:v libx264 -crf {quality} -preset medium -c:a aac でエンコードします。
Use Cases
- •iPhoneのMOVをMP4に変換
- •共有のためにWebMをMP4に変換
- •最新のプレーヤーのためにAVIを変換
- •変換中にビデオを圧縮
- •デバイス間の互換性を確保
You Might Also Like
If you find Video to MP4 Converter useful, check out these related tools: Video Trimmer, Video Resizer, and Video Compressor. All tools run entirely in your browser with no uploads or signups required.
Explore more: Browse all tools · Step-by-step guides · Tips & tutorials · Compare tools
Related Tools
Video Trimmer
Trim and cut video files with precise start/end controls and multiple output formats.
Video Resizer
Resize, crop, and change the aspect ratio of videos for any platform.
動画圧縮ツール
ブラウザで直接動画ファイルのサイズを削減します。
Video to Audio Extractor
Extract audio from any video file. Convert MP4, WebM, MOV to MP3, WAV, FLAC, and more.