For example, I have a small piece of a song, about 20 sec and there is a soundtrack of 4 hours where this 20 sec somewhere definitely is. So is there a software where i can upload my little piece and a big one, press a button and it will give me a time, where in the big one the small one starts?
I have never heard of any that can do this. Its quite a specific task that not many people would ever use ...the only remotely similar use would be youtube who look at uploads and scan to see if there is any copyright music in uploads but not something that we can leverage from
No, there isn't. The only way current software can do this is if you mark where it is so it can recall it. But then if you knew where it was you wouldnt need software to do it. Think about it though, how can you expect any software to know what part of a 4 hour long file YOU want?