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Tudjon meg többet a(z) MOV – AMR konverzióról

Hogyan konvertaljon

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Choose your output settings. The default settings work great for most files.

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A(z) MOV – AMR konverzióról

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.

Miért érdemes MOV fájlt AMR formátumba konvertálni?

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.

Gyakori felhasználási területek

Creating ultra-compact voice memos from MOV recordings for MMS messaging on older networks
Converting iPhone video notes to AMR for upload to legacy voicemail systems
Extracting speech from MOV interview recordings for telephony-quality playback systems
Producing minimal-size audio clips from MOV sources for embedding in 2G-era mobile applications
Converting recorded MOV voice messages for use in automated IVR (Interactive Voice Response) systems

Hogyan működik

FFmpeg extracts the audio track from the MOV container, decodes AAC/ALAC to PCM, downmixes to mono, resamples to 8 kHz, and encodes to AMR-NB using the libopencore-amrnb encoder. The output uses the standard AMR file format with the #!AMR\n magic header. The encoder operates at one of eight discrete bitrates from 4.75 to 12.2 kbps, selectable per frame based on voice activity detection.

Minőség és teljesítmény

AMR is a speech codec — it sounds acceptable for voice but poor for music. The 8 kHz sample rate limits frequency response to 300-3400 Hz (telephone bandwidth). Stereo information from the MOV is discarded. The result is comparable to a phone call in sound quality. For better narrowband quality, AMR-WB (16 kHz) can be requested if supported.

FFMPEG EngineModerateMinimal Quality Loss

Eszközkompatibilitás

Device	MOV	AMR
Windows PC	Partial	Partial
macOS	Native	Partial
iPhone/iPad	Native	Partial
Android	Partial	Partial
Linux	Partial	Partial
Web Browser	No

Ajánlott beállítások platformonként

YouTube

Resolution: 1920x1080

Bitrate: 8-12 Mbps

H.264 recommended for fast processing

Instagram

Resolution: 1080x1080

Bitrate: 3.5 Mbps

Square or 9:16 for Reels

TikTok

Resolution: 1080x1920

Bitrate: 4 Mbps

9:16 vertical, under 60s ideal

Twitter/X

Resolution: 1280x720

Bitrate: 5 Mbps

Under 140s, 512MB max

Resolution: 960x540

Bitrate: 2 Mbps

16MB limit for standard, 64MB for document

Discord

Resolution: 1280x720

Bitrate: 4 Mbps

Tippek a legjobb eredményekhez

1Use 12.2 kbps mode for the best speech clarity AMR supports — lower modes should only be used when extreme compression is required
2Only use AMR for voice content — music, ambient sound, and sound effects will sound terrible at narrowband frequencies
3Consider AMR-WB (wideband) if your target system supports it — the quality improvement over narrowband is very noticeable
4Pre-filter the audio with a bandpass at 300-3400 Hz before conversion to avoid aliasing artifacts from out-of-band content
5Test the AMR output on the target playback device before batch converting — compatibility varies across platforms

Kapcsolódó konverziók

Convert AMR to MOV MOV to MP4 Converter MOV to AVI Converter MOV to WebM Converter MOV to AAC Converter MOV to FLAC Converter MP4 to AMR Converter AVI to AMR Converter WebM to AMR Converter AAC to AMR Converter FLAC to AMR Converter

MOV to AMR conversion trades audio quality for extreme compression, producing voice-optimized files ideal for telephony and low-bandwidth messaging applications.

Gyakran ismetelt kerdesek

No. AMR is specifically designed for voice frequencies (300-3400 Hz) and will heavily distort music content. Use AAC or MP3 for music extraction.

Extremely small. AMR at 12.2 kbps produces about 90 KB per minute of audio — roughly 10-20x smaller than AAC at the lowest quality settings.

Yes. AMR-WB (Adaptive Multi-Rate Wideband) samples at 16 kHz and encodes at up to 23.85 kbps, providing noticeably clearer speech. Specify AMR-WB in the conversion settings.

No. AMR is a mono-only codec. Both stereo channels from the MOV are downmixed to a single mono track.

Most Android phones play AMR natively. iPhones can play AMR through third-party apps. VLC and QuickTime on desktop also support AMR playback.

Kapcsolódó konverziók és eszközök

Jellemzo	MOV	AMR
Teljes nev	Apple QuickTime Movie	Adaptive Multi-Rate Audio
Kiterjesztes	.mov	.amr
Leginkabb ajanlott	High quality	Speech optimized

Convert MOV to AMR — Free Online Converter