Converting big .psb to...

[Reb]

I have got a problem. I am trying to find a converter of big .psb files (14 - 18GB) to BigTIFF or JPEG2000.

Is it possible with your software ? It hangs when I am trying to do that.

These are orthophotos stitched in Photoshop by means of Photomerge. I want use them in other software, but Photoshop lets the only saving them as PSB or RAW.

[xnview]

XnConvert load the picture in RAM, so for such file it's not possible

[DEN]

I is should I swap the temporary files in the folder selector as PhotoShop work because it is stored in the HDD minutes that do not fit in RAM is it?

RAM Over in XnConvert\WorkingSet