If the card was formatted in-camera on many Sony models, recovery may be very difficult or impossible with normal software. Some Sony cameras can issue an erase/TRIM-like command during formatting, which effectively unmapps the card’s data so recovery programs only see empty/zeroed sectors.

That means the .INP and .INT files you’re seeing are unlikely to be usable photo/video files themselves; they’re probably just artifacts from the recovery scan, not something you can open directly.

Your best software option mentioned was PhotoRec, which is well regarded for recovering JPEG and RAW files. Stop using the card immediately and try PhotoRec on a computer if you haven’t already.

If PhotoRec cannot recover readable files, the remaining option is a professional data recovery lab with specialist flash recovery hardware. That can sometimes access data beyond what consumer tools can do, but it’s typically only worth it for very important files.

So: try PhotoRec once, don’t write anything more to the card, and if that fails, only a specialist lab is likely to help.