Using version 3.40, you should be able to compress a 4k by 4k texture using -q pvrtcbest, and get decent quality out as long as you have sufficient memory (at least 2GB free, so probably 3GB minimum on the system). Using the command below should produce the output you expect:
PVRTexToolCL -f PVRTC1_4 -m -q pvrtcbest -legacypvr -flip y,flag -i strokes~ipad.png -o strokes~ipad.pvr
Are you seeing issues with this?
For reference the PVRTC2_… types are PVRTC version 2, which is a different format to PVRTC1_… which are the original PVRTC formats.
/* Style Definitions */
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
font-family:"Times New Roman","serif";}
Ah, I see. That command works, but the output quality is much lower with the same images (combined into one big texture instead of into seventeen smaller textures). Is there a reason why the quality would suffer so?
I’m not aware of anything that should cause this issue. Would it be ok for you to share your images with us? If you could send them to DevTech@imgtec.com, I can take a look to see what the issue is. If you could also send it as the original seventeen textures that’d be a big help.