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HEIC at a glance
HEIC
Convert to HEIC when you want compact, high-quality still images in modern photo ecosystems, especially for mobile-first capture and storage.
It is useful when size efficiency matters and the receiving environment supports HEIF-family formats well.
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.
Format comparison
| Feature | HEIC | 3G2 |
|---|---|---|
| File type | Image | Video |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | depends | depends |
| File size characteristics | medium | large |
| Compatibility | broad | moderate |
| Editability | moderate | limited |
| Created year | 2015 | 2004 |
| Inventor | MPEG and Nokia HEIF contributors | 3GPP2 |
| Status | active | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | moderate | moderate |
| Metadata handling | moderate | moderate |
| Delivery profile | strong | strong |
| Workflow fit | delivery | delivery |
| Layer support | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use HEIC
- capture ingest
- editing
- web or print delivery
- Space-efficient in mobile photography workflows.
When to use 3G2
- editing
- mastering
- streaming delivery
- Useful for long-tail mobile-media compatibility.
FAQs
Why convert HEIC to 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.
What changes when converting HEIC to 3G2?
This conversion changes how the format behaves in downstream tools and delivery environments.
Size profile changes from medium in HEIC to large in 3G2. Editability profile changes from moderate in HEIC to limited in 3G2. Compatibility profile changes from broad in HEIC to moderate in 3G2.
What should I review after converting HEIC to 3G2?
Check the exported file for Mostly legacy today.; Recipients usually prefer conversion into more current containers..