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WEBM at a glance
WEBM
The WebM Project launched the format in 2010 to provide an open web-video option built around VPx video codecs and Vorbis or Opus audio.
ICB at a glance
ICB
The Truevision line grew out of EPICenter-era PC graphics boards, and several board names ended up surviving as filename extensions even when the underlying raster structure stayed close to the wider TGA family.
Format comparison
| Feature | WEBM | ICB |
|---|---|---|
| File type | Video | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2010 | 1991 |
| Inventor | Truevision | |
| Status | active | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | 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 WEBM
- Your source file is already in WEBM.
- Preserve source expectations before exporting to ICB.
- WEBM is commonly used in video workflows.
When to use ICB
- Your target workflow expects ICB.
- Improve delivery compatibility with ICB.
- ICB is commonly used in image workflows.
FAQs
Why convert WEBM to ICB?
Convert to ICB when recovering historical raster assets from Truevision-era systems or normalizing old image archives before moving them into PNG, TIFF, or another contemporary format.
It is mainly a compatibility target for legacy graphics collections.
What changes when converting WEBM to ICB?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to ICB removes layer support. Moving to ICB removes streaming delivery.
What should I review after converting WEBM to ICB?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.