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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.
PMD at a glance
PMD
The .pmd extension appeared in Sony's prosumer and professional recording device output alongside other Sony-proprietary formats like MQV, serving as a companion metadata or media descriptor file.
Format comparison
| Feature | WEBM | PMD |
|---|---|---|
| File type | Video | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2010 | 2004 |
| Inventor | Sony | |
| Status | active | legacy |
| 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 | Supported |
When to use each format
When to use WEBM
- Your source file is already in WEBM.
- Preserve source expectations before exporting to PMD.
- WEBM is commonly used in video workflows.
When to use PMD
- Your target workflow expects PMD.
- Improve delivery compatibility with PMD.
- PMD is commonly used in video workflows.
FAQs
Why convert WEBM to PMD?
Convert to PMD when maintaining compatibility with a Sony-centered production workflow, preserving source media from a professional ingest system, or migrating archived broadcast assets that were originally wrapped for structured editorial exchange.
What changes when converting WEBM to PMD?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PMD removes layer support.
What should I review after converting WEBM to PMD?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.