Convert MOV to AMR — Free Online Converter
Convert QuickTime Movie (.mov) to Adaptive Multi-Rate Audio (.amr) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Giới thiệu về chuyển đổi MOV sang AMR
MOV files from Apple devices store high-quality audio (typically AAC at 128-256 kbps stereo) alongside video. AMR (Adaptive Multi-Rate) is a narrowband speech codec developed by Ericsson for GSM cellular networks, encoding voice at 4.75-12.2 kbps mono at 8 kHz sample rate. It was the standard voice format for 2G/3G telephony worldwide.
Tại sao nên chuyển đổi MOV sang AMR?
AMR's extremely low bitrate makes it ideal for voice content that needs to be as small as possible — voice notes, dictation, and telephony applications. A 1-minute voice recording in AMR is roughly 100 KB compared to 1-2 MB for the same content in AAC. This matters for MMS messaging, low-bandwidth networks, and embedded systems with minimal storage.
Some voicemail systems and legacy PBX platforms still require AMR input, making this conversion relevant for business telephony workflows.
Các trường hợp sử dụng phổ biến
- Creating ultra-compact voice memos from MOV recordings for MMS messaging on older networks