This is the 816th most frequent Vietnamese word.
video
A recording or reproduction of moving visual images.
Here, 'video' is used as a noun to refer to a digital visual medium that one can watch.
Tôi đã xem một video hướng dẫn nấu ăn trên YouTube.
I watched a cooking tutorial video on YouTube.
Here, 'video' refers to the output or content displayed and evaluated based on its resolution and clarity.
Chất lượng video này rất rõ ràng và sắc nét.
The quality of this video is very clear and sharp.
In this sentence, 'video' refers to the process of recording moving images as a noun.