[ios]: HLS (m3u8) vs mp4 - very high energy impact + thermal throttling (display brightness dimming)

Hi,

I did some energy impact testing and also noticed that when I am using HLS vs mp4, mp4 consumes way less CPU (which is kinda expected since it does have less Network and parsing overhead), but my iPhone 13 Pro Max heats up pretty heavy, thermal state jumps from nominal to serious and the energy impact is super high.

## Test device
- iPhone 13 Pro Max
- iOS 16

## mp4

## HLS

Is there a way to make IVS more battery friendly? My streams just have 2 qualities (480p and 720p).

The screenshot with better energy consumption was achieved with mp4 instead of HLS.

I really couldn't find much information around that.