MP4 to MP3 — Extract Audio from Video Online Free

Extract Audio from Any Video

Want the audio from a video file? MyPDF's MP4 to MP3 converter extracts the audio track from video files and saves it as an MP3 — perfect for creating podcasts, music files, or audio recordings from video content.

How to Convert MP4 to MP3

Step 1: Upload Your Video

Open the MP4 to MP3 tool and upload your MP4 video file.

Step 2: Choose Audio Quality

Select bitrate:

• 128 kbps — Standard quality, smallest file


• 192 kbps — Good quality (recommended)


• 256 kbps — High quality


• 320 kbps — Maximum quality, largest file

Step 3: Download

Your MP3 audio file is ready to download.

Common Use Cases

• Lectures and talks — Listen to recorded lectures as audio-only
• Music from videos — Extract songs from music videos
• Podcasts — Convert video podcasts to audio-only format
• Meetings — Create audio recordings from video meetings
• Language learning — Extract audio lessons from video courses
• Audiobooks — Convert narrated videos to audio files

Supported Video Formats

MyPDF converts many video formats to MP3:

• MP4, AVI, MKV, MOV, WebM, WMV, FLV, 3GP

Use the same tool page or try:

• AVI to MP3 (convert to MP4 first)


• MKV to MP4 then extract audio


• Video to Audio — General video-to-audio converter

Audio Quality Guide

Bitrate	Quality	File Size (per minute)
128 kbps	Acceptable for speech	~1 MB
192 kbps	Good for most content	~1.5 MB
256 kbps	Very good quality	~2 MB
320 kbps	Near-CD quality	~2.5 MB

Tips

1. 128 kbps is fine for speech — Lectures, podcasts, and interviews sound great at 128 kbps
2. Use 256-320 kbps for music — Higher bitrate preserves musical detail
3. Need to trim? — Use Audio Trim to cut the MP3 to the section you need
4. Merge audio files — Use Audio Merge to combine multiple MP3s
5. Need other audio formats? — Convert to WAV, FLAC, or AAC

Frequently Asked Questions

Does it work with other video formats?

Yes. Besides MP4, you can convert AVI, MKV, MOV, WebM, WMV, and more to MP3.

Is there a file size limit?

Video files up to 50MB can be uploaded.

Will the audio quality match the original video?

The extracted audio matches the original audio track quality, up to your selected bitrate.

Is it free?

100% free — no sign-up, no watermarks.

Related Tools

• Audio Trim — Cut audio to specific sections
• Audio Merge — Combine multiple audio files
• Compress Video — Reduce video file size
• Video Trim — Trim video before extracting audio
• MP3 to WAV — Convert to uncompressed audio