Convert 3GPP Multimedia (.3gp) to Kindle Video (.kindle-video) online for free. Fast, secure video conversion with no watermarks or registration.
Upload your .3gp 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.
3GP is the mobile multimedia container used by GSM feature phones, storing H.263 or H.264 video with AMR audio at resolutions under 480p. Amazon Kindle Fire tablets support video playback in MP4 (H.264/H.265) with AAC audio, but with specific constraints — earlier Kindle models are limited to H.264 Baseline profile at 720p or lower. Converting 3GP to a Kindle-optimized video profile ensures smooth, hardware-decoded playback on all Kindle Fire generations.
Kindle Fire tablets run a forked version of Android (Fire OS) with a custom media framework that is more restrictive than stock Android. While MP4/H.264 is supported, certain container features and codec profiles can cause playback failures. A Kindle-optimized preset uses conservative encoding settings (H.264 Baseline, Level 3.0, AAC-LC mono/stereo at 128 kbps) that work across all Kindle Fire generations, from the original 2011 model to the latest Fire Max 11.
FFmpeg transcodes 3GP video to H.264 Baseline profile (Level 3.0) in an MP4 container. Audio is converted from AMR to AAC-LC at 128 kbps. The Baseline profile avoids B-frames and CABAC entropy coding, ensuring compatibility with the less powerful processors in budget Kindle models. Resolution is capped at 1280x800 (matching the Kindle Fire HD display), though 3GP sources rarely approach this limit. Faststart flag is enabled for streaming playback.
H.264 Baseline is slightly less efficient than Main or High profile but remains a significant upgrade over H.263. For the low resolutions typical of 3GP files (176x144 to 320x240), the quality difference between Baseline and Main profile is negligible. Audio quality improves dramatically from AMR to AAC. File sizes are similar to or smaller than the 3GP original.
| Device | 3GP | Kindle Video |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Native | 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
3GP to Kindle video conversion guarantees that your legacy mobile recordings play reliably on any Kindle Fire tablet, regardless of model or Fire OS version.
Безпечна передача
Завантаження зашифровані через HTTPS
Конфіденційність передусім
Файли автоматично видаляються після обробки
Без реєстрації
Почніть конвертацію миттєво
Працює всюди
| No |
8MB free, 50MB Nitro
Будь-який браузер, будь-який пристрій
| Характеристика | 3GP | Kindle Video |
|---|---|---|
| Повна назва | 3GPP Multimedia | Amazon Kindle Fire Video |
| Розширення | .3gp | .mp4 |
| Найкраще для | Mobile optimized | Kindle Fire optimized |