Convert MPEG-4 Video (Apple) (.m4v) to Kindle Video (.kindle-video) online for free. Fast, secure video conversion with no watermarks or registration.
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 .mp4 file when it's ready.
M4V is Apple's video container for iTunes Store content, while Kindle Video is an H.264 480p preset designed for Amazon's Kindle Fire tablets. The Kindle Fire line uses a custom Android-based OS (Fire OS) with specific hardware decoder capabilities. Converting M4V to Kindle Video produces an MP4 file at 480p resolution, optimized for the Kindle Fire's smaller screen and less powerful processor compared to flagship tablets.
Kindle Fire tablets — especially the budget models like Fire 7 and Fire HD 8 — have limited processing power and screen resolution (1024x600 or 1280x800). Playing high-bitrate 1080p M4V files on these devices can cause stuttering, overheating, and rapid battery drain. The Kindle Video preset encodes at 480p with appropriate bitrates, ensuring smooth playback on all Kindle Fire models while conserving storage on devices that typically have only 16-32 GB.
FFmpeg encodes to H.264 Baseline Profile at 854x480 (480p) with a bitrate of 1-1.5 Mbps. Audio is AAC-LC at 96 kbps stereo, sufficient for the Kindle's built-in speakers. The Baseline Profile avoids CABAC encoding, which older Kindle Fire processors struggle with. Faststart atom placement enables progressive playback from the Kindle's file manager or video player app.
At 480p, the output is well-matched to Kindle Fire screens, which top out at 1280x800 pixels on the HD models. On the standard Fire 7 (1024x600), 480p is essentially native resolution and looks sharp. Text overlays and fine detail may appear soft compared to the original M4V, but for movies and shows, the quality is perfectly acceptable.
| Device | M4V | Kindle Video |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| 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 Kindle Video conversion is purpose-built for Amazon's affordable tablet line. The 480p H.264 preset ensures reliable playback on all Kindle Fire models while keeping file sizes small for devices with limited storage.
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 | Kindle Video |
|---|---|---|
| 正式名称 | iTunes Video | Amazon Kindle Fire Video |
| 拡張子 | .m4v | .mp4 |
| 最適な用途 | Apple ecosystem | Kindle Fire optimized |