The size of a high-quality photo frame is typically around 5 MB. Of course, we can maintain this quality and shoot video. However, this may require us to prepare a room full of storage units. To explain this with concrete mathematical data, a 1-second video consists of approximately 25 frames. 5 MB x 25 = 125 MB per second. This means that it requires 125 MB of space for just one second of footage. If we calculate this for a project that lasts for 1 year, it results in: 365 (days) x 24 (hours) x 3600 (seconds) x 25 (frames) x 5 (MB) = 3,942,000,000 MB.
In summary, to obtain an image of 125 MB quality per second, it means you need a 1 TB hard drive every 2.5 hours. Considering that most of the computers available on the market do not even have a capacity of 1 TB, it is clear why Time Lapse is made from photos instead of videos.