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MPG at a glance
MPG
Convert to MPG when a device, archive, or legacy workflow explicitly expects MPEG program-stream style video, especially for standard-definition material and older distribution paths.
It is a sensible target for compatibility and recovery work.
For mainstream modern playback, MP4 is usually the more convenient container.
ORF at a glance
ORF
Convert to ORF when preserving Olympus camera originals or maintaining compatibility with an Olympus raw-photo workflow.
It is useful for archive masters and non-destructive photographic editing.
Format comparison
| Feature | MPG | ORF |
|---|---|---|
| File type | Video | Image |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | depends | raw |
| File size characteristics | large | large |
| Compatibility | moderate | limited |
| Editability | limited | high |
| Created year | 1993 | 2003 |
| Inventor | Moving Picture Experts Group (MPEG) | Olympus (now OM System) |
| 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 MPG
- editing
- mastering
- streaming delivery
- Very widely recognized extension label.
When to use ORF
- capture ingest
- editing
- web or print delivery
- Preserve capture-stage sensor information.
FAQs
Why convert MPG to ORF?
Convert to ORF when preserving Olympus camera originals or maintaining compatibility with an Olympus raw-photo workflow.
It is useful for archive masters and non-destructive photographic editing.
What changes when converting MPG to ORF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Quality profile changes from depends in MPG to raw in ORF. Editability profile changes from limited in MPG to high in ORF. Compatibility profile changes from moderate in MPG to limited in ORF. Archival profile changes from moderate in MPG to strong in ORF. Metadata profile changes from moderate in MPG to rich in ORF. Delivery profile changes from strong in MPG to limited in ORF. Workflow profile changes from delivery in MPG to source in ORF.
Moving to ORF adds camera raw data.
What should I review after converting MPG to ORF?
Check the exported file for Compatibility often depends on vendor or decoder support.; They are source formats, not publication-ready outputs.; Public technical documentation is uneven across manufacturers..