If the viewers in sites like Scribd, etc. can display books like a PDF version of the book, why is it not possible to convert the same flash stream of data back to PDF?
One (very, very) naive method to implement this would be to: 1. Capture screenshots of the content displayed continuously. 2. Run some kind of OCR software on the captured screenshots. 3. Splice the screenshots together to get a meaningful PDF.
I am sure there are super-uber ways to do this but I just wanted to make my intent understood in simple terms.
And before someone goes all-out guns in the comments, raising issues like the illegality of doing it, and stuff like DRM, I just want to know the concepts behind why it is not possible for this to be implemented.