Convert Flash Video (.f4v) to Mobile Video (.mobile-video) online for free. Fast, secure video conversion with no watermarks or registration.
Upload your .f4v 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.
F4V is Adobe's Flash video container storing H.264 video and AAC audio. The Mobile Video preset creates H.264 480p MP4 files designed for universal mobile compatibility across all smartphone platforms — Android, iOS, Windows Phone, and even older feature phones with MP4 support. This is the safest choice when you do not know the specific mobile device but need guaranteed playback.
The Mobile Video preset uses the most conservative, universally compatible settings: H.264 Baseline Profile at 480p with AAC-LC audio. These settings are supported by virtually every mobile device manufactured since 2010, regardless of brand, operating system, or price point. Unlike platform-specific presets, Mobile Video prioritizes compatibility over quality — making it ideal for mass distribution to mixed device audiences.
The preset outputs H.264 Baseline Profile Level 3.0 at 854x480 with 1-2 Mbps video bitrate. Audio is AAC-LC at 96 kbps stereo / 44.1 kHz. Baseline Profile avoids CABAC and B-frames, ensuring hardware decoding works even on the most basic mobile chipsets. The pixel format is yuv420p with fast-start moov atom. Maximum frame rate is capped at 30 fps for consistent battery-friendly playback.
At 480p/1.5 Mbps, quality is adequate for mobile screens up to 5 inches. On larger phone screens (6+ inches), you may notice some softness compared to higher-resolution presets. Audio at 96 kbps AAC is suitable for built-in speakers and casual headphone listening.
| Device | F4V | Mobile 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
F4V to Mobile Video is the universal fallback conversion for reaching the widest possible mobile audience. When in doubt about your viewers' devices, this preset guarantees playback everywhere.
Безопасная передача
Загрузки зашифрованы по HTTPS
Конфиденциальность прежде всего
Файлы автоматически удаляются после обработки
Без регистрации
Начните конвертировать мгновенно
Работает везде
| No |
8MB free, 50MB Nitro
Любой браузер, любое устройство
| Характеристика | F4V | Mobile Video |
|---|---|---|
| Полное название | Flash MP4 Video | Mobile Device Video |
| Расширение | .f4v | .mp4 |
| Лучше всего подходит для | MPEG-4 based | Universal mobile |