The IDF published the first video and the BBC published the second video. You can verify the presence of an additional gun yourself.
That means that we know the IDF intentionally placed another gun behind the MRI machine and calls into question whether the other guns were placed there by the IDF as well.
The IDF is framing it as an uncut, first look inside the hospital (that is, before the IDF got a chance to mess around and manipulate evidence). That’s clearly untrue, which is why the IDF took the video down and blurred the laptop.