These are often clips from commercial Dhallywood (Bangladesh) or Tollywood (West Bengal, India) films. They typically feature romantic or dance sequences known as "item numbers".
For the viewer, the low resolution was a feature, not a bug. The graininess added a layer of abstraction. You didn’t see the actors’ skin texture or the fake set design. You saw gestures —a hand pulling away, a forehead touching a windowpane. The .flv format was the visual equivalent of nostalgia itself: slightly blurry, vaguely remembered, and profoundly felt. Bangla Hot Sexy Music Video -7- - YouTube.flv
Break down the of a specific artist's videography (e.g., Arijit Singh or Anupam Roy) the low resolution was a feature