Why does my Air 2020 get hot with Youtube in Chrome but not streaming a vid from my Airport TimeCapsule?

[questionwonder]

Macbook Air 2020 -
When I stream Youtube vids at 720P or higher, after about 25 minutes my temp sensor reaches about 70-75C, ok no problem, from what I've read.
But how come when I stream a 1080P video from my Apple Airport Time Capsule and watch it on VLC, my temp remains around 55C?

In both cases I'm utilizing the Intel wifi on the CPU, is it all because of Chrome?

 

[jpn]

Macbook Air 2020 -
When I stream Youtube vids at 720P or higher, after about 25 minutes my temp sensor reaches about 70-75C, ok no problem, from what I've read.
But how come when I stream a 1080P video from my Apple Airport Time Capsule and watch it on VLC, my temp remains around 55C?

In both cases I'm utilizing the Intel wifi on the CPU, is it all because of Chrome?

thanks for posting this. it must be due to use of Chrome. its a very easy to understand example you have posted and helps us to understand more about the limits of this machine.

this actual use case is very interesting, as it seems to be able to give us some guesses as to what processes cause the most cpu usage.
do you have an i3 or i5? and how much RAM? and, does the fan come on loudly at 70-75C?

 

[twintin]

The difference lies in how the video is encoded. YouTube with chrome uses VP9, for which HW support is disabled, meaning all processing needs to be in done in SW (= more CPU intensive). Your video on TC is most likely encoded as H.264/H.265 for which there is HW support (= less CPU intensive).

 

[ruka.snow]

The difference lies in how the video is encoded. YouTube with chrome uses VP9, for which HW support is disabled, meaning all processing needs to be in done in SW (= more CPU intensive). Your video on TC is most likely encoded as H.264/H.265 for which there is HW support (= less CPU intensive).

As a test of this they can plat the same video on safari which will use hardware decoding on YouTube as the videos are h.264 when played that way. Ideally find a way to confirm the encoding used. Using Safari in general should result in much better performance per watt and a much smoother internet experience for most of the web, with only the occasional site hardcoded to fail on anything but chrome.

 

[rba1989]

I'm using h264ify chrome extension to make YouTube stream H.264 instead of VP9.
But max resolution you can get is 1080p and 60fps.

 

[questionwonder]

thanks for posting this. it must be due to use of Chrome. its a very easy to understand example you have posted and helps us to understand more about the limits of this machine.

this actual use case is very interesting, as it seems to be able to give us some guesses as to what processes cause the most cpu usage.
do you have an i3 or i5? and how much RAM? and, does the fan come on loudly at 70-75C?

I have the i5 with 16GB. The fan is almost always running, but will be audible at ~80C and it's loud, but not as loud as my Air 2013.

 

[jpn]

I have the i5 with 16GB. The fan is almost always running, but will be audible at ~80C and it's loud, but not as loud as my Air 2013.

thanks for the additional info.
"but not as loud as my Air 2013"
this last bit of info is useful to me.
i have had all MacBook Air models. everyone.
none have had continuous or very frequent fan noise unless it was a for a very very short period of time.
so my useage pattern will not have this terrible fan noise.
im not a gamer, and am content to view streaming video at lower settings.
i avoid Chrome except for when i use google Maps.

thanks for the info.

 

[questionwonder]

I just installed h265ify so let's see if that does anything. I'm watching videos on Youtube now.