In the start of this video you will see "Salmon Raju" .. That is text that looks is staying still according to the location in the scene but the camera is still moving around.
I can understand simply watermarking movies, which I see during the start of movie when showing cast names etc, but I am curious how they do the first thing I asked.
If you have seen Indian Premier League matches you would have notices they many a times show a Player's score and Runs to Win and some other things in the middle of ground that is staying still but the camera is moving around the ground.
How do they do it?
I am a Software Engineer but unable to figure it out, any answers with technical/non-technical explanations are welcomed.