The demo on this page is an invitation, not a story. Its 110 words, read over 46.4 seconds at about 2.4 words a second, tell you to gather friends, roll dice and choose between healing the wounded and slaying the dragon. One line, "Put to work your creativity," reads like a translation glitch and should have been cut.
The visuals, in the Fantasy style, are stronger than the script. There is a dragon over a green valley, an adventuring party on a stone path, a healer kneeling over a wounded animal, and a table of real-world players laughing over a map and scattered dice. That last image is the most D&D thing in the video.
What it lacks is what makes your table worth watching: names, a failed plan and a consequence. Compare "choices shape destinies" with "Brother Aldo rolled a 1 on the rope, and the party watched the treasure sink into the bog." The second gives you three scenes and a joke.
So treat the demo as a guide to runtime and look, then fill it with your session. Around 110 words makes a tight Short; for a real previously-on, plan two or three times that.