How to convert an image to PVRTC format

Question

I've been using terminal to convert my jpg image named left to pvrtc format and this happens:

/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/texturetool -e PVRTC --bits-per-pixel-2 -o left.pvrtc left.jpg  
Failed to load image  
Failed to perform Encode

Answer 1

Change:

/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/texturetool -e PVRTC --bits-per-pixel-2 -o left.pvrtc left.jpg

To:

/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/texturetool -e PVRTC --bits-per-pixel-2 -o left.pvr left.PNG

The file must be a PNG

Updated instructions on OSX 10.10+

In Terminal, hit cd to make sure you're in your root directory.

cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/ && ls

This should show you a list of all the tools there (Make sure you see texturetool) - If you don't, update your OS, then Xcode

Once you know it's there, cd back to your root and run the tool like:

/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/texturetool -e PVRTC --bits-per-pixel-2 -f PVR -o [new path to pvr to go] [path of original png]

Your output pvr path can be ~/whatever/image.pvr and your input png is the path to your image to be converted.

HERE and HERE are other good walkthrough

The iPhone SDK includes a tool that allows you to create textures in the PVRTC compression format, aptly named texturetool. If you have Xcode installed with the iPhone OS 2.2 SDK in the default location (/Developer/Platforms/), then texturetool is located at: /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/texturetool.

texturetool allows you to create four variants of PVRTC data, the primary difference being tradeoffs between quality and size. You will have to experiment with these variants to determine which setting is the best compromise for each individual texture image.

• Apple Docs

HERE is some same code to help once you have your pvrtc file

HERE are some more docs

HERE is a good read on PVRTC stuff