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CRW at a glance
CRW
Early Canon digital-camera workflows used raw formats like CRW before the later EOS raw families stabilized around CR2 and then CR3.
M2V at a glance
M2V
The .m2v extension became the conventional identifier for demultiplexed MPEG-2 video elementary streams during the DVD authoring era, when tools separated video from program streams for independent processing.
Format comparison
| Feature | CRW | M2V |
|---|---|---|
| File type | Not available | Not available |
| Extensions |
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| MIME type |
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| Compression / quality | Not available | Not available |
| File size characteristics | Not available | Not available |
| Compatibility | Not available | Not available |
| Editability | Not available | Not available |
| Created year | Not available | Not available |
| Inventor | Not available | Not available |
| Status | Not available | Not available |
| Transparency | Not available | Not available |
| Animation | Not available | Not available |
| Primary use cases |
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| Common software |
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| Archival suitability | Not available | Not available |
| Metadata handling | Not available | Not available |
| Delivery profile | Not available | Not available |
| Workflow fit | Not available | Not available |
| Layer support | Not available | Not available |
| Camera raw data | Not available | Not available |
| HDR support | Not available | Not available |
| Streaming ready | Not available | Not available |
When to use each format
When to use CRW
- capture ingest
- editing
- web or print delivery
- Preserve capture-stage sensor information.
When to use M2V
- editing
- mastering
- streaming delivery
- Clean separation of video from multiplexing layers enables independent processing.
FAQs
Why convert CRW to M2V?
Choose M2V as target when dVD authoring video preparation, broadcast MPEG-2 processing where audio is handled as a separate stream, and MPEG-2 encoding pipelines.
What changes when converting CRW to M2V?
DVD authoring video preparation, broadcast MPEG-2 processing where audio is handled as a separate stream, and MPEG-2 encoding pipelines.
What should I review after converting CRW to M2V?
After conversion, review these destination checks: Open converted output in FFmpeg and verify behavior on real samples; Compare output against the expected depends quality profile; Contains no audio, timing metadata, or container structure — requires multiplexing for playback.
How can I keep quality stable in CRW to M2V conversion?
Run representative samples, keep settings deterministic, and monitor these risks: MPEG-2 compression efficiency is significantly lower than modern codecs like H.264 or HEVC; Contains no audio, timing metadata, or container structure — requires multiplexing for playback; Validate destination compatibility before large-batch conversion.