How to Extract Audio from Video (MP3, WAV, AAC) for Free

Why Extract Audio from Video?

Extracting audio from a video is one of the most common media tasks. People do it to:

• **Save music** from a recorded live concert or performance
• **Get the podcast audio** from a recorded video interview
• **Create a voice recording** from a video meeting
• **Reuse background music** from a video in another project
• **Extract speech** for transcription or translation
• **Sample sounds** from video footage for music production

Whatever the reason, the process is straightforward with the right tool.

Audio Formats Explained: MP3, WAV, and AAC

Before extracting, choose the right output format for your use case.

MP3

The most universal audio format. Supported by every device ever made in the last 25 years. MP3 uses lossy compression to achieve small file sizes.

**Bitrates for MP3**:

• 128 Kbps — Acceptable quality, very small files
• 192 Kbps — Good quality for casual listening
• 320 Kbps — Near-CD quality, the maximum for MP3

**Best for**: Music playback, podcasts, sharing via messaging apps, compatibility

WAV

An uncompressed audio format. Files are large (about 10 MB per minute of CD-quality audio) but quality is perfect. No data is discarded.

**Best for**: Audio editing, sound design, situations where you'll be processing the audio further, archiving

AAC (Advanced Audio Codec)

AAC is the modern successor to MP3. At the same bitrate, AAC sounds better than MP3. It's used by Apple, YouTube, and most streaming platforms.

**Best for**: Apple devices, streaming, slightly better quality than MP3 at the same file size

OGG Vorbis

Open-source lossy format used by many games and platforms. Supported by all modern browsers.

**Best for**: Web audio, game sound effects, open-source projects

How to Extract Audio from Video Using SaveOnlineVideos

Our Audio Extractor makes this easy:

Step 1: Go to the Audio Extractor

Visit the Audio Extractor tool. No login required.

Step 2: Upload Your Video

Click upload or drag and drop your video file. Supported formats include MP4, MOV, MKV, AVI, WebM, FLV, and more. Files up to 2 GB are supported.

Step 3: Select Output Format

Choose between **MP3**, **WAV**, and **AAC**. For most purposes, MP3 at 192 Kbps is the best choice.

Step 4: Extract and Download

Click Extract Audio. The audio track is separated and packaged for download. Click Download to save the file.

Understanding Audio Extraction vs Audio Conversion

There's an important distinction:

**Audio extraction** means pulling the existing audio track out of the video container without re-encoding it. This is lossless — the audio is bit-perfect. However, it only works if the video's audio codec matches your desired output format (e.g., extracting MP3 from an MP4 that contains an MP3 audio stream).

**Audio conversion** means re-encoding the audio from one format to another. This is lossy — some quality is lost in the process. However, it's necessary when the source audio codec doesn't match the desired output format, which is the case for most videos.

Our Audio Extractor tool handles both automatically. If the source audio can be directly extracted in the target format, it does so. Otherwise, it re-encodes at high quality.

Audio Quality Tips for Best Results

Use the Highest Bitrate Available

For MP3 output, use at least 192 Kbps for music and 128 Kbps for speech. 320 Kbps is the maximum quality MP3 and is worth using if storage isn't a concern.

Start From the Best Source

Extracting audio from a low-quality compressed video will produce low-quality audio. If the video was compressed heavily (e.g., downloaded from a messaging app), the audio will show those artifacts regardless of what format you save it in.

WAV for Further Editing

If you plan to edit the audio in a DAW (Digital Audio Workstation) or audio editor, extract as WAV. Editing and re-saving compressed formats like MP3 causes quality degradation each time. WAV preserves perfect quality through multiple edits.

AAC for Apple Users

If you use an iPhone, iPad, or Mac, AAC integrates seamlessly with Apple's ecosystem. iTunes, GarageBand, and all Apple apps work natively with AAC.

Common Video Sources and Expected Audio Quality

Other Ways to Use Extracted Audio

Once you have the audio file, you can:

• **Edit it**: Trim using our [Audio Cutter](/tools/audio-cutter)
• **Adjust speed**: Slow down or speed up with our [Audio Speed Changer](/tools/audio-speed-changer)
• **Boost volume**: Use our [Volume Booster](/tools/volume-booster)
• **Convert to MP3**: If you extracted WAV and need MP3, use our [MP3 Converter](/tools/mp3-converter)

Conclusion

Extracting audio from video is simple and free with the right tool. Remember:

• Use **MP3** for universal compatibility and small file sizes
• Use **WAV** when you'll be editing the audio further
• Use **AAC** for Apple devices or slightly better quality than MP3

Extract the audio from your video now using our free Audio Extractor tool.