Convert MPEG-4 Video (Apple) (.m4v) to MPEG-4 Audio (.m4a) 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 .m4a file when it's ready.
M4V and M4A are both MPEG-4 containers — M4V stores video plus audio (from iTunes and Apple TV), while M4A stores audio only. Both use AAC as their primary audio codec. Converting M4V to M4A is essentially stripping the video track and keeping only the audio inside the same container family. Because the audio codec and container are nearly identical, this conversion can often be performed as a zero-cost stream copy with no re-encoding needed.
M4A is the standard audio format across Apple's ecosystem — iTunes, Apple Music, iPhone, iPad, Apple Watch, and HomePod all handle M4A natively. Extracting the audio from M4V to M4A preserves full compatibility with Apple's metadata system, including chapter markers, artwork, lyrics, and iTunes-style tags that would be lost when converting to MP3 or other formats.
FFmpeg copies the AAC audio stream directly from the M4V container into an M4A container using -vn -acodec copy. This is a remux operation — no decoding or re-encoding occurs. The audio bitstream is transferred byte-for-byte, preserving exact quality. The process takes seconds regardless of file length because only container metadata is rewritten. If the M4V contains multiple audio tracks, a specific track can be selected using the -map flag.
Stream copy produces an M4A file with audio quality identical to the original M4V — zero generation loss. The AAC bitrate, sample rate, and channel configuration are all preserved exactly. This is the highest-quality extraction method possible.
| Device | M4V | M4A |
|---|---|---|
| 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 M4A is the most efficient audio extraction for Apple users. The stream copy operation is instant, lossless, and produces files that integrate perfectly with Apple's entire ecosystem of devices and software.
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 | M4A |
|---|---|---|
| 正式名称 | iTunes Video | MPEG-4 Audio |
| 拡張子 | .m4v | .m4a |
| 最適な用途 | Apple ecosystem | Better than MP3 |