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Convert AMR to MP4
Convert AMR to MP4 format — 100% browser-based, no upload required.
2 cores · low tier
Drop a file here or click to select
Format will be auto-detected
About these formats
Source
AMR
Adaptive Multi-Rate AudioSpeech codec optimized for voice recording. Widely used in mobile phones for voice notes and MMS audio.
Best for
Voice recordingPhone audioMMS messagesLow-bandwidth speech
Advantages
- + Very small files
- + Optimized for speech
- + Mobile standard
Limitations
- − Speech only (poor music)
- − Low quality
- − Limited sample rates
Target
MP4
MPEG-4 Part 14The most widely used video container. Supports H.264/H.265 video with AAC audio, offering excellent compatibility across all devices and platforms.
Best for
Web videoStreamingSocial mediaMobile video
Advantages
- + Universal compatibility
- + Good compression
- + Streaming support
- + Hardware accelerated
Limitations
- − Proprietary codecs (licensing)
- − Not ideal for editing