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3G2 at a glance
3G2
Convert to 3G2 when preserving compatibility with legacy CDMA handset recordings, telecom media archives, or workflows that explicitly expect 3GPP2-style mobile video.
It is useful for migration and recovery of old phone clips.
For current playback and sharing, MP4 is almost always the better destination.
MEF at a glance
MEF
Convert to MEF when preserving Mamiya camera originals or maintaining compatibility with medium-format photographic workflows that still expect that raw format.
It is appropriate for archive masters and non-destructive editing.
Format comparison
| Feature | 3G2 | MEF |
|---|---|---|
| File type | Video | Image |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | depends | raw |
| File size characteristics | large | large |
| Compatibility | moderate | limited |
| Editability | limited | high |
| Created year | 2004 | 2005 |
| Inventor | 3GPP2 | Mamiya |
| Status | active | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | moderate | strong |
| Metadata handling | moderate | rich |
| Delivery profile | strong | limited |
| Workflow fit | delivery | source |
| Layer support | Not supported | Not supported |
| Camera raw data | Not supported | Supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use 3G2
- editing
- mastering
- streaming delivery
- Useful for long-tail mobile-media compatibility.
When to use MEF
- capture ingest
- editing
- web or print delivery
- Preserve capture-stage image data for later interpretation.
FAQs
Why convert 3G2 to MEF?
Convert to MEF when preserving Mamiya camera originals or maintaining compatibility with medium-format photographic workflows that still expect that raw format.
It is appropriate for archive masters and non-destructive editing.
What changes when converting 3G2 to MEF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Quality profile changes from depends in 3G2 to raw in MEF. Editability profile changes from limited in 3G2 to high in MEF. Compatibility profile changes from moderate in 3G2 to limited in MEF. Archival profile changes from moderate in 3G2 to strong in MEF. Metadata profile changes from moderate in 3G2 to rich in MEF. Delivery profile changes from strong in 3G2 to limited in MEF. Workflow profile changes from delivery in 3G2 to source in MEF.
Moving to MEF adds camera raw data.
What should I review after converting 3G2 to MEF?
Check the exported file for Many are vendor-specific and poorly documented publicly.; Compatibility often depends on decoder support in tools such as LibRaw, Adobe Camera Raw, or vendor software.; They are source formats, not publication-ready outputs..