In a time capsule, a popular gadget from the time would be really cool. For example, an old - fashioned camera or a Walkman. It shows the technology of the era. A piece of music on a vinyl record or cassette tape can also be great. It gives a sense of the music taste back then. And a menu from a local restaurant could be interesting as it reveals the food preferences and availability at the time.
We can get some information about the astronauts leaving the cabin, but we don't provide specific videos of the astronauts leaving the cabin. Therefore, I don't know if there are any videos of astronauts coming out of the capsule.
The time capsule may contain the cultural heritage of the extinct civilization on the planet. It could have art, music, or literature from that civilization, which would be valuable in understanding their way of life.
There was this great time capsule story from a city. A group of artists made a time capsule. They included their paintings, sketches, and some notes about their creative process. Decades passed and when it was opened, it not only showed their works but also how art had evolved over time. It was a wonderful discovery that inspired new generations of artists.
In my opinion, Capsule Corp Comics is legitimate. They have a consistent output of comics, positive reviews from readers, and seem to operate within the boundaries of the law and industry standards.