They are not sending trillions of light pulses, otherwise they'd be making a very long movie. If they want to do a 10 second video, they just need to send 240 pulses.
They send a pulse and take some kind of picture at some particular point in time. If you watched the video you'd know that these pictures are taken so quickly that the exposure is incredible low - this means the image is incredibly dark.
They repeat this process of taking some kind of picture at some point in time trillions of times - this produces the terabytes of data that was mentioned in the video.
From these terabytes of data, which are essentially incredibly under exposed (dark) pictures of a bottle they use computers to add them all together based on their time and produce a video (which is actually trillions of different pictures added together to compensate the massive amount of under exposure).
Note, the "time" of the picture is related to when the pulse of light was "released".
They send a pulse and take some kind of picture at some particular point in time. If you watched the video you'd know that these pictures are taken so quickly that the exposure is incredible low - this means the image is incredibly dark.
They repeat this process of taking some kind of picture at some point in time trillions of times - this produces the terabytes of data that was mentioned in the video.
From these terabytes of data, which are essentially incredibly under exposed (dark) pictures of a bottle they use computers to add them all together based on their time and produce a video (which is actually trillions of different pictures added together to compensate the massive amount of under exposure).
Note, the "time" of the picture is related to when the pulse of light was "released".