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Video Conversion

Convert MP4 to MP1 Online — Free

Fast, free MP4 to MP1 converter. No registration required.

またはインポート元

200万以上のファイル変換

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安全な転送

HTTPS暗号化アップロード

プライバシー優先

処理後にファイルを自動削除

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すぐに変換を開始

どこでも動作

あらゆるブラウザ、あらゆるデバイス

変換方法

1

Upload your .mp4 file by dragging it into the upload area or clicking to browse.

2

Choose your output settings. The default settings work great for most files.

3

Click Convert and download your .mp1 file when it's ready.

MP4とは?

MP4 is the most widely used video container format. It stores video, audio, subtitles, and metadata. Compatible with virtually every device and platform, from smartphones to smart TVs.

形式の詳細

正式名称
MPEG-4 Part 14
拡張子
.mp4

主な特徴

  • Universal compatibility
  • Streaming support
  • Small file sizes
  • Hardware-accelerated playback

MP1とは?

MP1 (MPEG Audio Layer 1) is the earliest MPEG audio compression standard. It provides CD-quality audio at higher bitrates than MP2/MP3 and is found in some legacy professional audio systems.

形式の詳細

正式名称
MPEG Audio Layer 1
拡張子
.mp1

主な特徴

  • Early MPEG standard
  • CD-quality audio
  • Low complexity
  • Legacy format

MP4とMP1の比較

特徴MP4MP1
正式名称MPEG-4 Part 14MPEG Audio Layer 1
拡張子.mp4.mp1
最適な用途Universal compatibilityEarly MPEG standard

よくある質問

The audio track is extracted from your MP4 file without re-encoding when possible, preserving the original quality. If format conversion is needed, we use optimized settings to minimize any loss.
Free users can process files up to 100MB. Pro users can extract audio from videos up to 2GB with priority processing.
Audio extraction is fast — most files complete in under 30 seconds. Our servers handle the processing, so it works on any device.
Yes. You can adjust bitrate, sample rate, and channels before conversion. Default settings preserve the original audio quality from your MP4 file.
Yes. Our converter runs entirely in your browser — no app needed. Upload your video, extract audio, and download on any device.

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