Convert MPEG-1 Video (.m1v) to 3GPP Multimedia (.3gp) online for free. Fast, secure video conversion with no watermarks or registration.
Upload your .m1v 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 .3gp file when it's ready.
M1V is the MPEG-1 Video elementary stream format — a raw video bitstream without any container muxing, originating from the first MPEG video standard ratified in 1993. M1V files contain only the video elementary stream (no audio), encoded at constrained parameters: typically 352x240 (SIF NTSC) or 352x288 (SIF PAL) at 1.15 Mbps. 3GP is the 3GPP mobile multimedia container designed for GSM and 3G cellular networks, using H.263 or MPEG-4 Part 2 video with AMR audio.
Converting M1V to 3GP takes the bare MPEG-1 video elementary stream and repackages it into a mobile-optimized container with a modern low-bitrate codec. Since M1V is already low resolution, the resolution reduction for 3GP is minimal, but the codec upgrade from MPEG-1 to H.263/MPEG-4 improves compression efficiency.
M1V files are unplayable on virtually all mobile devices — no phone media player recognizes the .m1v extension or handles raw MPEG-1 elementary streams. 3GP is the universal mobile format that every feature phone and smartphone supports natively. Converting M1V to 3GP makes legacy VCD-era video accessible on mobile devices.
The conversion also adds a proper container structure. M1V is a raw bitstream with no index, making seeking impossible. 3GP wraps the video in a structured container with proper timecodes, enabling scrubbing and random access on mobile players.
FFmpeg reads the M1V elementary stream (MPEG-1 video only — no audio track exists), decodes the MPEG-1 video frames, and re-encodes to H.263 at QCIF (176x144) or CIF (352x288). Since M1V contains no audio, the output 3GP is video-only unless a separate audio file is muxed in. The 3GP container wraps the output with proper timestamps and index tables for mobile playback. Frame rates are typically preserved at the source 23.976 or 25 fps.
Since M1V sources are already low resolution (352x240/288), the quality reduction for 3GP is less dramatic than from higher-resolution sources. CIF (352x288) output at 256 kbps preserves most of the original MPEG-1 quality. QCIF (176x144) halves the resolution but produces extremely small files. The modern H.263 codec achieves comparable quality to MPEG-1 at lower bitrates.
| Device | M1V | 3GP |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Native |
| 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
M1V to 3GP conversion brings raw MPEG-1 elementary streams into the mobile world, adding a proper container and modern codec suitable for feature phones and cellular networks.
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 | M1V | 3GP |
|---|---|---|
| Полное название | MPEG-1 Video | 3GPP Multimedia |
| Расширение | .m1v | .3gp |
| Лучше всего подходит для | Raw MPEG-1 video stream | Mobile optimized |