All the information is on your phone, within the settings of the camera application.
Change the resolution of images/videos on iOS
On iOS devices, go to the following sections :
> Video recording
You can then select the number of pixels (720 pixels, 1080 pixels, etc.) in height you want for videos that, by default, are in landscape format.
You can also choose the number of frames per second (fps) of your videos. A number of frames per second greater than 30 are only useful if you want to apply a slow-motion effect to your videos.
Changing the resolution of images/videos on Android
On Android devices, go to the following sections 😀
> Enter directly into your camera application
> Select the sprocket wheel
> You then have the possibility to change (i) either the resolution of your "rear lens", (ii) or that of your "front lens" (i.e. the camera used for selfies). You can also differentiate the resolutions of photos/images and videos.