You're lucky, my DVB-S PVR does not store any metadata, only channel name and time in the filename. So I had to write a script which looks up the TV programme on some website to find out what showed at the time.
If you're looking for generic tools to analyze binary files, you can try
hexdump -C info3.pvr would print the entire file so you can learn about its structure if any,
strings info3.pvr will simply print out readable ASCII strings contained in the binary file. For the manual approach (copy/pastaing name out of it) this might be sufficient if you're lucky.
For a more detailed answer unless someone just happens to know that particular file format you'd have to upload a sample file somewhere.