I wanted to watch "The Incredible Hulk" on Netflix, and asked myself at the opening credits of "The Incredible Hulk" if this is just a sequel to "Hulk"
No, the film has been re-shot because of the Avengers - now the actors fit together
And why comes at the beginning of "The Incredible Hulk" a scene where he transforms himself in the lab and after that there are 157 days without incident
Yes, The Incredible Hulk is the sequel to The Hulk.
So you first had to watch The Hulk.
But both films are with a different actor than the Avengers
The first Hulk movie of 2003, with Eric Bana as Hulk, is meanwhile for itself, because the "Incredible Hulk" of 2008 with Edward Norton is officially reboot of the first Hulk movie AND also officially second MCU movie (after Iron Man 1).
https://en.wikipedia.org/...and_reboot
In terms of content, it goes on seamlessly in the first Avengers when Natasha visits Banner. (This one will not be played by Norton any more, but by Mark Ruffalo.)
