Convert MP4, AVI, MOV to 3GP — Preset Settings for Older Phones

How to Convert Videos to 3GP: Step-by-Step Guide for Mobile Playback

1. When to use 3GP

• Compatibility: Older feature phones and some basic media players.
• File size: Good for low-bandwidth or limited-storage devices.
• Limitations: Lower resolution and quality than modern formats.

2. Choose a converter

• Desktop apps (recommended): HandBrake, FFmpeg, Any Video Converter.
• Online converters: CloudConvert, Zamzar — use if files are small and privacy is not a concern.
• Mobile apps: Video Converter apps on Android can convert on-device.

3. Recommended conversion settings

• Container: 3GP
• Video codec: H.263 or MPEG-4 Part 2 (use H.264 if supported by target device)
• Audio codec: AMR-NB or AAC-LC (AMR for maximum compatibility)
• Resolution: 176×144 (QCIF) or 240×320 (QVGA) for older phones; 320×240 for small smartphones
• Frame rate: 15–24 fps
• Bitrate: 64–256 kbps (video); 12–64 kbps (AMR audio) or 64–128 kbps (AAC)
• Aspect ratio: Preserve or set to 4:⁄₁₆:9 depending on device

4. Step-by-step (desktop, using HandBrake or FFmpeg)

• HandBrake:
  1. Open HandBrake and load your source video.
  2. Choose a small preset (e.g., “Very Fast 480p”) then manually set output container to 3GP if available or use MP4 and later rewrap with FFmpeg.
  3. Set video codec to MPEG-4 or H.263, lower resolution and bitrate per recommendations.
  4. Set audio codec to AAC or AMR and choose a low bitrate.
  5. Click Start to encode.
• FFmpeg (single-command example):

  bash
  Copy CodeCopied
  ffmpeg -i input.mp4 -c:v mpeg4 -vtag xvid -b:v 200k -r 20 -s 240x320 -c:a libvo_amrwbenc -b:a 12.2k output.3gp 

  (If libvo_amrwbenc is unavailable, use AAC: -c:a aac -b:a 64k and ensure target device supports AAC in 3GP.)

5. Step-by-step (online converter)

1. Open chosen site (e.g., CloudConvert).
2. Upload video file.
3. Select output format: 3GP.
4. Adjust video/audio settings per recommendations.
5. Convert and download the 3GP file.

6. Verify on target device

• Transfer the file to the phone (USB, Bluetooth, or SD card).
• Play the file; if it fails, try lower resolution, switch audio codec to AMR, or reduce bitrate.

7. Troubleshooting

• “File won’t play”: use AMR audio or lower resolution/frame rate.
• “Poor quality”: increase bitrate or use higher-resolution preset.
• “Too large”: lower video bitrate, resolution, or switch to more efficient codec (if device supports it).

8. Quick checklist

• Container: 3GP
• Video codec: H.263/MPEG-4 (or H.264 if supported)
• Audio codec: AMR or AAC
• Resolution: 176×144, 240×320, or 320×240
• Frame rate: 15–24 fps
• Bitrate: 64–256 kbps (video), 12–128 kbps (audio)

If you want, I can produce an FFmpeg command tailored to your source file and target device—tell me the input format, desired resolution, and whether your phone supports AAC or only AMR.