Convert Windows TV (.wtv) to Kindle Video (.kindle-video) online for free. Fast, secure video conversion with no watermarks or registration.
Upload your .wtv 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.
WTV (Windows TV) is the Windows Media Center DVR recording format, storing broadcast television in an NTFS-like container with MPEG-2 or H.264 video, AC3 or AAC audio, and EPG metadata. The Kindle Video device preset is a pre-configured FFmpeg profile targeting Amazon's Kindle Fire tablet line, producing H.264 Baseline Profile video with AAC-LC audio at resolutions optimized for the Kindle Fire's 7-10 inch screen and MediaTek or Qualcomm processing hardware.
Kindle Fire tablets are among the most affordable tablets available, making them a common secondary screen for entertainment. Converting WTV recordings to the Kindle preset ensures compatibility with Fire OS's somewhat limited codec support while optimizing for the device's lower processing power compared to flagship tablets.
Kindle Fire tablets run Fire OS (a fork of Android) with a more restricted media stack than stock Android. While basic H.264/AAC playback works, the Kindle preset ensures the encoding profile and resolution match what Fire OS and its built-in video player handle smoothly. WTV files are completely unplayable on Kindle — the format is foreign to Fire OS entirely.
The Kindle preset uses conservative encoding parameters (Baseline Profile, moderate bitrate) that prevent stuttering and excessive battery drain on the Kindle Fire's lower-end processors. This is particularly important for the base Kindle Fire 7, which has limited CPU and GPU compared to iPad or Samsung Galaxy Tab.
FFmpeg demuxes the WTV container and applies the Kindle Fire encoding profile. The preset uses H.264 Baseline Profile at up to 720p (1280x720) with AAC-LC stereo at 128 kbps. Video bitrate targets 1.5-3 Mbps to ensure smooth playback on Kindle Fire's MediaTek processors. Interlaced WTV sources are deinterlaced with yadif. AC3 surround audio is downmixed to stereo. The MP4 container uses faststart for progressive playback from Kindle's internal storage or microSD card.
The Kindle preset at 720p with 1.5-3 Mbps produces clean video that looks sharp on the Kindle Fire's 7-10 inch 1024x600 to 1920x1200 screen. Broadcast SD content is presented cleanly at native resolution. HD recordings look crisp at 720p. Audio at 128 kbps AAC is transparent through the Kindle's speakers or connected headphones. File sizes average 0.7-1.5 GB per hour.
| Device | WTV | Kindle Video |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser |
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
WTV to Kindle Video conversion makes broadcast TV recordings playable on Amazon's affordable tablet line, with encoding tuned for Fire OS compatibility and smooth playback on Kindle hardware.
Truyền tải an toàn
Tải lên được mã hóa HTTPS
Quyền riêng tư là ưu tiên
Tệp tự động xóa sau khi xử lý
Không cần đăng ký
Bắt đầu chuyển đổi ngay lập tức
Hoạt động mọi nơi
| No |
8MB free, 50MB Nitro
Mọi trình duyệt, mọi thiết bị
| Tính năng | WTV | Kindle Video |
|---|---|---|
| Tên đầy đủ | Windows TV | Amazon Kindle Fire Video |
| Phần mở rộng | .wtv | .mp4 |
| Phù hợp nhất cho | Windows Media Center | Kindle Fire optimized |