Thumbnails generation & proportions

[Ldoppea]

Hi,

I found a vB forum which have all of its thumbnails with same dimensions (100*70px) and good proportions (images are truncated). This thumbnails are generated by the attachment.php file.

Is there an option to do this on original vB options? Is it a hook? A simple plugin?

Do you know how to reproduce this function?

[Ldoppea]

Nobody knows how to do this?

Optionally, does somebody know how to simple redim an image file, with constrained proportions and with borders which exceed truncated?

For example this image:
https://vborg.vbsupport.ru/attachment.php?attachmentid=104079&d=1252090325

Had to be resized and truncated like :
104080