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JPEG 2000 at a glance
JPEG 2000
JPX reflects the branch of JPEG 2000 that pushed beyond a simple still-image wrapper into more expressive composition and metadata scenarios for professional and institutional imaging.
MQV at a glance
MQV
The .mqv extension appeared on some Sony camcorders and recording devices around the mid-2000s as an internal variant of the QuickTime/MOV container carrying Sony-proprietary metadata tracks and stream wrappers.
Format comparison
| Feature | JPEG 2000 | MQV |
|---|---|---|
| File type | Image | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2004 | 2007 |
| Inventor | ISO/IEC (JPEG committee) | Sony |
| Status | active | legacy |
| Transparency | Not supported | Not supported |
| Animation | Supported | Not supported |
| Primary use cases |
|
|
| 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 JPEG 2000
- Your source file is already in JPEG 2000.
- Preserve source expectations before exporting to MQV.
- JPEG 2000 is commonly used in image workflows.
When to use MQV
- Your target workflow expects MQV.
- Improve delivery compatibility with MQV.
- MQV is commonly used in video workflows.
FAQs
Why convert JPEG 2000 to 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.
What changes when converting JPEG 2000 to MQV?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to MQV removes animation support.
What should I review after converting JPEG 2000 to MQV?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.