das Video
video
A digital recording of moving images with sound that can be watched on a screen.
Sie hat mir ein lustiges Video von ihrer Katze geschickt.
She sent me a funny video of her cat.

video
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video
A digital recording of moving images with sound that can be watched on a screen.
Sie hat mir ein lustiges Video von ihrer Katze geschickt.
She sent me a funny video of her cat.

The component 'Video-' is used in many compound words to establish a connection to video technology. This makes many new terms easy to understand.
Am Abend spielen wir oft Videospiele.
In the evening, we often play video games.
Certain verbs are often combined with 'Video' (video). You can 'ansehen' or 'anschauen' (watch) a video, 'aufnehmen' or 'drehen' (record/shoot) one, 'hochladen' or 'herunterladen' (upload or download) it, and 'teilen' (share) it.
Lass uns später das Video von der Feier ansehen.
Let's watch the video from the party later.
When 'Video' (video) is countable ('ein Video' (a video), 'viele Videos' (many videos)), it refers to a single recording. When people speak of 'Video' as an uncountable medium, it refers to the technology in general.
Dieses Video ist sehr lustig.
This video is very funny.
picture / image
'das Bild' and 'das Video' both belong to visual media, that is, things you can look at. The most important difference is movement. A picture is normally still, for example a photo, a drawing, or an image on a screen. A video shows moving images and often sound as well. Learners may confuse the words because both can appear on a phone, computer, or television. If you only see a fixed moment, it is a 'Bild'. If something moves or is played, it is a 'Video'.

Im Training hat der Trainer ein kurzes Video von der Übung gezeigt.
During training, the coach showed a short video of the exercise.
Für den Vortrag zeigt Lena ein Bild von der alten Brücke.
For the presentation, Lena shows a picture of the old bridge.