This is the 804th most frequent Finnish word.
videolla
"Videolla" means "on the video" in English.
Here, 'videolla' ('on the video') indicates the location where the action (watching) takes place.
Katsoin hauskan kohtauksen videolla.
I watched a funny scene on the video.
In this sentence, 'videolla' ('in the video') specifies the medium through which the instructions are sought.
Yritin löytää ohjeet videolla.
I tried to find the instructions in the video.
Here, 'videolla' ('in the video') describes the source where the visibility of the event is being questioned.