[TIKA-4088] Add magic for SEG Y format

• Type: Sub-task
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Gregory Lepore
• Created: 15/Jun/23 17:15
• Updated: 15/Jun/23 19:16

Description

The SEG Y format occurs 2,390 times (roughly) in the latest Common Crawl dataset. No known mime type. Magic is:

Offset 0: C340(F1|40)40

Offset 80: C3

Offset 160: C3

 

With additional C3 every 80 bytes 38 more times. However, the above matched all SEG Y files in my test collections, with no false positives, so it should be good enough.

 

File extension is .segy and .sgy.

 

https://web.archive.org/web/20160312030348/http://www.seg.org/resources/publications/misc/technical-standards

 

A different signature at:

 

https://www.nationalarchives.gov.uk/PRONOM/Format/proFormatSearch.aspx?status=detailReport&id=1110&strPageToDisplay=signatures