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FLV at a glance
FLV
FLV is inseparable from the Flash era of online media, when browser plugins rather than native video elements dominated streaming video experiences.
RAS at a glance
RAS
Before today's relatively small set of mainstream consumer image formats dominated everyday use, desktop software, workstations, GUI systems, and early graphics tools produced many specialized raster formats with local importance.
Format comparison
| Feature | FLV | RAS |
|---|---|---|
| File type | Video | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2002 | 1987 |
| Inventor | Macromedia / Adobe | Sun Microsystems |
| Status | active | legacy |
| Transparency | Not supported | Not supported |
| Animation | Not 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 | Supported | Not supported |
When to use each format
When to use FLV
- Your source file is already in FLV.
- Preserve source expectations before exporting to RAS.
- FLV is commonly used in video workflows.
When to use RAS
- Your target workflow expects RAS.
- Improve delivery compatibility with RAS.
- RAS is commonly used in image workflows.
FAQs
Why convert FLV to RAS?
Convert to RAS when preserving compatibility with historical Sun or Unix image assets.
In most modern contexts it serves as a migration and archive-recovery format.
What changes when converting FLV to RAS?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to RAS removes streaming delivery.
What should I review after converting FLV to RAS?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.