It should be an internal measure, not an external one.
![](https://i.ytimg.com/vi/pDtcGrB8LeE/mqdefault.jpg)
4:05
Why artists see the world differently.
![](https://i.ytimg.com/vi/L8MsNJEfySY/mqdefault.jpg)
2:00:00
Dark Violin & Cello Music for Deep Focus
![](https://i.ytimg.com/vi/IVa7l_h6QmA/mqdefault.jpg)
16:09
Comment capturer des paysages urbains minimalistes en photographie et en timelapse
![](https://i.ytimg.com/vi/HWtAdLEc5zE/mqdefault.jpg)
4:15
Sasha Smith - She Can Be (Official Video)
![](https://i.ytimg.com/vi/BCBAyLD2pxI/mqdefault.jpg)
24:44
Au coin de l'atelier – Épisode 3 | Réflexions sur les travaux d'élèves
![](https://i.ytimg.com/vi/9AThycGCakk/mqdefault.jpg)
13:30
Life Lessons From 100-Year-Olds
![](https://i.ytimg.com/vi/ljvuNRU7RgE/mqdefault.jpg)
1:31:00
Das TV-Duell – Olaf Scholz gegen Friedrich Merz in voller Länge
![](https://i.ytimg.com/vi/LbuFuQYeSxg/mqdefault.jpg)
1:45:29