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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.
VC-1 at a glance
VC-1
Microsoft submitted WMV9 to SMPTE for standardization in 2003, and the resulting VC-1 standard was approved in 2006. It was adopted alongside H.264 and MPEG-2 as a mandatory Blu-ray Disc video codec.
Format comparison
| Feature | WEBM | VC-1 |
|---|---|---|
| File type | Video | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2010 | 2006 |
| Inventor | Microsoft | |
| Status | active | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Supported | Not supported |
| Multitrack 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 WEBM
- Your source file is already in WEBM.
- Preserve source expectations before exporting to VC-1.
- WEBM is commonly used in video workflows.
When to use VC-1
- Your target workflow expects VC-1.
- Improve delivery compatibility with VC-1.
- VC-1 is commonly used in video workflows.
FAQs
Why convert WEBM to VC-1?
Blu-ray disc authoring, Windows Media HD content, legacy VC-1 archive conversion, and Blu-ray-compatible video encoding.
What changes when converting WEBM to VC-1?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to VC-1 removes layer support. Moving to VC-1 removes streaming delivery.
What should I review after converting WEBM to VC-1?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.