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Posted to dev@tika.apache.org by "Tim Allison (Jira)" <ji...@apache.org> on 2023/03/22 14:56:00 UTC

[jira] [Commented] (TIKA-3991) Improve file detection for canon-raw (cw), cr2 and cr3

    [ https://issues.apache.org/jira/browse/TIKA-3991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17703702#comment-17703702 ] 

Tim Allison commented on TIKA-3991:
-----------------------------------

Looks like there are some crw here: https://telparia.com/fileFormatSamples/image/crw
cr2 examples here: https://telparia.com/fileFormatSamples/image/cr2/

still need cr3 examples.

> Improve file detection for canon-raw (cw), cr2 and cr3
> ------------------------------------------------------
>
>                 Key: TIKA-3991
>                 URL: https://issues.apache.org/jira/browse/TIKA-3991
>             Project: Tika
>          Issue Type: Task
>            Reporter: Tim Allison
>            Priority: Minor
>
> There are three file formats here under "canon raw":
> crw -- ciff based
> cr2 -- tiff based
> cr3 -- mpeg based
> We need to figure out what mimes we want to use for each of these and add byte-level detection for them.
> There's some complexity in that we'd like them all to subtype canon raw (I think?), but the cr2 and cr3 are based on completely different file formats.
> Some references:
> https://exiftool.org/canon_raw.html
> http://fileformats.archiveteam.org/wiki/CR2
> https://github.com/lclevy/canon_cr3



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