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MQV at a glance
MQV
Convert to or from MQV when migrating recordings off older Sony consumer devices, preserving original camera exports, or normalizing a proprietary Sony library into MP4, MOV, or another easier editing format.
It is primarily a legacy-ingest and archive-recovery format.
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 | MQV | 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 | 2007 | 2005 |
| Inventor | Sony | Mamiya |
| Status | legacy | 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 MQV
- editing
- mastering
- streaming delivery
- QuickTime/ISO BMFF lineage makes the underlying structure parseable by many media tools.
When to use MEF
- capture ingest
- editing
- web or print delivery
- Preserve capture-stage image data for later interpretation.
FAQs
Why convert MQV 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 MQV to MEF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Quality profile changes from depends in MQV to raw in MEF. Editability profile changes from limited in MQV to high in MEF. Compatibility profile changes from moderate in MQV to limited in MEF. Archival profile changes from moderate in MQV to strong in MEF. Metadata profile changes from moderate in MQV to rich in MEF. Delivery profile changes from strong in MQV to limited in MEF. Workflow profile changes from delivery in MQV to source in MEF.
Moving to MEF adds camera raw data.
What should I review after converting MQV 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..