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MP4 at a glance
MP4
MP4 grew out of the MPEG-4 and ISO Base Media File Format lineage, which helped make it both standards-based and commercially pervasive.
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 | MP4 | PMD |
|---|---|---|
| File type | Video | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2001 | 2004 |
| Inventor | ISO/IEC MPEG | Sony |
| Status | active | legacy |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not 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 MP4
- Your source file is already in MP4.
- Preserve source expectations before exporting to PMD.
- MP4 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 MP4 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 MP4 to PMD?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting MP4 to PMD?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.