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Convert MPEG to AMR - Voice-Optimized Mobile Audio

Extract speech audio from MPEG video optimized for mobile telephony.

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Step 2: Choose format
Step 3: Convert files

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Extract Voice Audio for Mobile Use

Have an MPEG video with speech content you need for mobile applications? AMR (Adaptive Multi-Rate) is the audio format specifically designed for voice on mobile phones. It delivers clear speech at remarkably small file sizes.

Converting your MPEG files to AMR extracts the audio track and optimizes it for voice clarity. This conversion is ideal when you need speech content for telephony systems, mobile messaging, or voice-based applications where bandwidth matters.

How to Convert MPEG to AMR

  1. Upload your MPEG file - Drag and drop or click to select your video
  2. Select AMR as output - Choose AMR for mobile-optimized voice audio
  3. Download your audio - Get your compressed speech file ready for mobile use

The entire process happens in your browser. No software installation required.

Why Convert to AMR Format?

AMR was developed by Ericsson in the 1990s specifically for mobile voice transmission. It remains the standard codec for GSM and 3G voice calls worldwide. Here's why it matters:

  • Extreme compression - AMR files are 10-12x smaller than equivalent MP3 files
  • Speech-optimized - Algorithms specifically tuned for human voice frequencies
  • Mobile standard - Native support on virtually all mobile phones
  • Adaptive bitrate - Adjusts quality based on network conditions (4.75 to 12.2 kbit/s)

In our testing, a 60-second voice recording that would be 960KB as MP3 compressed to under 90KB as AMR with fully intelligible speech.

MPEG vs AMR: Technical Comparison

MPEG video files contain both video and audio streams, typically using MPEG-1 Layer II or Layer III audio encoding. AMR is audio-only, focused entirely on speech:

  • MPEG audio - Full frequency range (20Hz-20kHz), designed for music and speech
  • AMR audio - Narrowband (300Hz-3.4kHz) or wideband (50Hz-7kHz), speech-only
  • MPEG bitrate - Typically 128-320 kbit/s for good quality
  • AMR bitrate - 4.75-12.2 kbit/s (AMR-NB) or 6.6-23.85 kbit/s (AMR-WB)

The file size difference is dramatic. A one-hour MPEG video's audio track might be 60MB. The same content as AMR could be under 5MB.

Common Use Cases

Voice Messages and Voicemail

Recording voice messages from video content for mobile voicemail systems. AMR is the standard format for MMS voice attachments and voicemail storage on most carriers.

Telephony IVR Systems

Creating audio prompts for interactive voice response systems. AMR's small size means faster loading and less storage for hundreds of prompts.

Mobile App Development

Extracting voice content for apps that need speech playback with minimal bandwidth usage, especially for emerging markets with slower connections.

Archiving Voice Content

When you have video recordings where only the speech matters, converting to AMR dramatically reduces storage requirements while preserving voice clarity.

When to Use a Different Format

AMR excels at speech but has limitations. Consider alternatives for these scenarios:

  • Music content - Use MPEG to MP3 for music extraction. AMR's narrowband compression makes music sound poor.
  • High-fidelity voice - Use MPEG to WAV if you need uncompressed audio for further editing.
  • Desktop playback - MP3 or AAC have better desktop player support than AMR.

AMR is purpose-built for mobile voice. Use it when that's exactly what you need.

Works on Any Device

Our converter runs entirely in your browser:

  • Windows, Mac, Linux, Chromebook
  • Chrome, Firefox, Safari, Edge
  • iPhone, iPad, Android tablets

No software to install, no accounts to create. Upload, convert, download.

Pro Tip

AMR comes in two variants: AMR-NB (narrowband, 8kHz sampling) and AMR-WB (wideband, 16kHz sampling). For maximum mobile compatibility, stick with AMR-NB. For better voice quality on modern smartphones, AMR-WB (also called HD Voice) sounds noticeably clearer.

Common Mistake

Using AMR for music or complex audio. AMR aggressively filters frequencies outside speech range (300Hz-3.4kHz), making music sound muffled and distorted. Always use MP3 or AAC for music content.

Best For

Extracting voice content from MPEG videos for mobile voicemail systems, IVR prompts, MMS messages, or any application where you need speech audio with minimal file size and guaranteed mobile playback.

Not Recommended

Don't use AMR if you need to edit the audio further (use WAV), if the content includes music (use MP3), or if the primary playback device is a desktop computer (MP3 has better support).

Frequently Asked Questions

AMR (Adaptive Multi-Rate) is an audio format designed specifically for speech on mobile phones. It's the standard codec for GSM and 3G voice calls, voicemail systems, and MMS voice messages. AMR achieves extreme compression while maintaining speech intelligibility.

Most modern media players support AMR, including VLC Media Player. Windows Media Player may require an additional codec. Since AMR was designed for mobile phones, playback is guaranteed on virtually all Android and iOS devices.

AMR files are typically 10-12x smaller than equivalent MP3 files. A 1MB MP3 voice recording compresses to around 80-100KB as AMR. This dramatic size reduction is achieved by focusing only on speech frequencies.

For speech content, AMR maintains full intelligibility despite heavy compression. For music or complex audio, quality will be noticeably reduced because AMR filters out frequencies outside the human voice range. Only use AMR for speech content.

AMR-NB (narrowband) operates at 4.75-12.2 kbit/s and covers 300Hz-3.4kHz. AMR-WB (wideband) operates at 6.6-23.85 kbit/s and covers 50Hz-7kHz, offering better speech quality. Our converter uses AMR-NB for maximum compatibility.

Yes. Our converter works in mobile browsers on both iPhone and Android. Open the converter in Safari or Chrome, upload your MPEG file, and download the AMR result directly to your device.

No. The conversion happens entirely in your browser using local processing. Your video file never leaves your device, ensuring privacy for sensitive voice content.

Choose AMR when file size is critical and the content is speech-only. AMR is 10x smaller than MP3 at comparable speech quality. This matters for mobile apps, MMS messages, voicemail systems, and any application where bandwidth or storage is limited.

Yes. Our batch conversion feature lets you upload multiple MPEG files and convert them all to AMR simultaneously. Each file is processed independently and downloaded separately.

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