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R Markdown at a glance
R Markdown
R Markdown grew from the knitr and RStudio ecosystem and became the dominant reproducible-reporting format for R-centered data science before Quarto generalized the model across more languages.
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 | R Markdown | PMD |
|---|---|---|
| File type | Document | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2012 | 2004 |
| Inventor | Yihui Xie (RStudio / knitr) | Sony |
| Status | active | legacy |
| Primary use cases |
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When to use each format
When to use R Markdown
- Your source file is already in R Markdown.
- Preserve source expectations before exporting to PMD.
- R Markdown is commonly used in document 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 R Markdown 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 R Markdown to PMD?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting R Markdown to PMD?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.