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PGM Raw at a glance
PGM Raw
The raw PGM branch reflects the practical evolution of Netpbm-style tool formats: keep the tiny header and easy parsing, but move the pixel raster into a binary form that is much more usable for real data sizes.
AVI at a glance
AVI
AVI grew from Microsoft's RIFF multimedia architecture, which is why its structure reflects chunked stream handling and older desktop-video assumptions.
Format comparison
| Feature | PGM Raw | AVI |
|---|---|---|
| File type | Image | Video |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1988 | 1992 |
| Inventor | Jef Poskanzer | Microsoft |
| Status | active | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Supported |
When to use each format
When to use PGM Raw
- Your source file is already in PGM Raw.
- Preserve source expectations before exporting to AVI.
- PGM Raw is commonly used in image workflows.
When to use AVI
- Your target workflow expects AVI.
- Improve delivery compatibility with AVI.
- AVI is commonly used in video workflows.
FAQs
Why convert PGM Raw to AVI?
Convert to AVI when an older editor, recorder, analysis tool, or device workflow explicitly expects it, or when preserving compatibility with legacy video archives matters.
It is useful for certain capture and processing chains where AVI remains a known stable interchange wrapper.
For streaming, web playback, and compact delivery, MP4 or WebM are usually stronger options.
What changes when converting PGM Raw to AVI?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to AVI adds streaming delivery.
What should I review after converting PGM Raw to AVI?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.