3GP to ASF Converter
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Supports: 3GP, 3G2
Advanced Options - Our defaults are optimized for the best results. We recommend you keeping the defaults unless you have a specific need.
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Need help?How to Convert 3GP to ASF
- Upload Your 3GP File — Click "Choose Files" or drag and drop your 3GP or 3G2 mobile video file. Both extensions are accepted.
- Choose Video Codec — Under Video Codec, the default for ASF output is H.264.
- Set Video Quality — Under File Compression, choose from: Quality Preset (Highest through Lowest), Target File Size % (1-100% slider with Smart Scaling), Specific File Size (MB/KB), Constant Bitrate, Variable Bitrate, or Constant Quality (CRF).
- Set Audio Codec — Under Audio Codec, the default for ASF is WMA v2 (WMAV2).
- Adjust Resolution (Optional) — Under Video Resolution, keep the original or choose Preset Resolutions (1080p, 720p, 480p, etc.), Fixed Resolutions, Resolution Percentage, or custom Width/Height/Width×Height.
- Trim (Optional) — Under Trim, set a Start Time and Duration to extract a specific segment.
- Convert & Download — Click "Convert" and download your ASF file.
Why Convert 3GP to ASF?
3GP is a mobile video format for GSM networks with limited quality. ASF (Advanced Systems Format) is Microsoft's streaming media container, designed for Windows Media Player and Windows-based streaming. Converting 3GP to ASF is useful for playing mobile video recordings in Windows Media Player natively, streaming mobile video content via Windows Media Services, integrating mobile video into Windows-based media workflows, and improving compatibility with Windows-based digital signage and kiosk systems.
3GP vs ASF Comparison
| Feature | 3GP | ASF (Advanced Systems Format) |
|---|---|---|
| Developer | 3GPP (GSM consortium) | Microsoft |
| Video codec | H.263 or H.264 | H.264 (default) |
| Audio codec | AMR | WMA v2 (default) |
| Streaming | Mobile networks | Windows Media Services |
| DRM support | No | Yes (Windows Media DRM) |
| Platform | Mobile phones | Windows native |
| Best for | Mobile recording | Windows streaming, playback |
ASF Format Features
| Feature | Description |
|---|---|
| Streaming | Designed for Windows Media streaming |
| DRM | Supports Windows Media DRM protection |
| Metadata | Rich metadata and scripting support |
| Error correction | Built-in for network streaming |
| Player | Windows Media Player (native) |
What is ASF?
ASF (Advanced Systems Format) is Microsoft's container format for streaming media. It is the underlying format for WMV (video) and WMA (audio) files. ASF supports streaming, DRM, and rich metadata — designed for Windows Media infrastructure.
Why is WMA v2 the default audio codec?
WMAV2 is the native audio codec for ASF/WMV containers, ensuring maximum compatibility with Windows Media Player and Windows-based streaming systems.
Can I trim the video during conversion?
Yes. Under Trim, select "Time Range" and enter a Start Time and Duration in seconds or HH:MM:SS.sss format.
Should I use ASF or MP4?
For Windows-only environments and Windows Media streaming, use ASF. For universal playback on all devices, use 3GP to MP4 instead.
Does ASF work on macOS or Linux?
ASF files play on VLC (all platforms) but not natively on macOS or Linux. For cross-platform compatibility, convert to MP4 instead.