2005.11.23 19:55 "Re: [Tiff] libtiff and over 4GB files", by Chris Cox

If the file goes over 4 Gig, LibTiff should fail with an error. (yes, some files could be legal and slightly over 4 Gig, but not many)

Photoshop goes an extra step, and provides a warning if the file goes over 2 Gig that the file may not be readable with all TIFF implementations.

Chris

On 11/22/05 6:32 PM, "Frank Warmerdam" <warmerdam@pobox.com> wrote:

This post is *not* about BigTIFF. Instead it is about how libtiff reports errors if the application attempts to write a file larger than 4GB. The short answer is that libtiff doesn't seem to even notice, it just writes out a corrupt file (with tile/strip offsets wrapping back to 0 at the 4GB mark).

I have created a bug on this issue at:

  http://bugzilla.remotesensing.org/show_bug.cgi?id=1004

I am interested in feedback from folks on appropriate or inappropriate approaches to dealing with this problem. Does anyone depend on libtiff being able to write a bit past the 4GB mark? Does libtiff report errors, and I am just ignoring them somehow?