Convert MPEG-4 Video (Apple) (.m4v) to Advanced Audio Coding (.aac) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .m4v file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .aac file when it's ready.
M4V files from Apple's ecosystem store H.264 video alongside AAC audio tracks, often from iTunes purchases or Apple TV content. Converting M4V to AAC extracts just the audio layer, discarding the video entirely. Since M4V already uses AAC for its audio codec, this process can often perform a direct stream copy — pulling the AAC data out of the MPEG-4 container without re-encoding, preserving the exact original audio quality at zero computational cost.
Extracting AAC audio from M4V is ideal when you only need the soundtrack, dialogue, or music from a video file. AAC is universally supported across all Apple devices, Android, web browsers, and most media players. Since M4V already contains AAC audio natively, the extraction is lossless when using stream copy — you get the exact audio quality that was mastered into the original video.
FFmpeg reads the M4V container and isolates the AAC audio stream using -vn (no video) and -acodec copy for lossless extraction. This is a remux operation, not a transcode — the AAC bitstream is copied byte-for-byte into a standalone .aac or .m4a container. If re-encoding is requested (e.g., to change the bitrate), FFmpeg decodes the AAC and re-encodes it at the target bitrate using the native AAC encoder or libfdk_aac.
When using stream copy (the default), audio quality is identical to the original — no generation loss occurs. If re-encoding to a lower bitrate, expect minor quality reduction. iTunes M4V files typically contain AAC at 128-256 kbps, which is already high quality for most listening scenarios.
| Device | M4V | AAC |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Native | Native |
| iPhone/iPad | Native | Native |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
M4V to AAC is one of the most efficient conversions available because the audio codec is already AAC. Stream copy mode preserves perfect quality in seconds, making it ideal for anyone who needs just the audio from Apple video content.
安全な転送
HTTPS暗号化アップロード
プライバシー優先
処理後にファイルを自動削除
登録不要
すぐに変換を開始
どこでも動作
あらゆるブラウザ、あらゆるデバイス
| No |
| 特徴 | M4V | AAC |
|---|---|---|
| 正式名称 | iTunes Video | Advanced Audio Coding |
| 拡張子 | .m4v | .aac |
| 最適な用途 | Apple ecosystem | Superior to MP3 |