Hello,
This is probably because you are not using hardware video acceleration.
As I have said in a previous email in this thread, I did enable Hardware video acceleration, I explained how I beleive this improved the battery life considerably, but again as I have no scientific method of testing this (I need the laptop and i don't want to leave it unattended playing video to get a dataset, I can't full tell :)
If hardware video acceleration is enabled and working in your browser, but does not work on YouTube, it is possible your CPU does not support the AV1 (or VP9 or VP8) video codec.
I used youtube as a backup, I rather use mpv to play the videos and the audio, browsers are notoriously inefficient when doing compression and decompression of audio, so I did not expect to get good battery life within the browser.
Also: ❯ vainfo Trying display: wayland Trying display: x11 vainfo: VA-API version: 1.19 (libva 2.19.0)vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 23.3.0 ()
vainfo: Supported profile and entrypoints
VAProfileNone : VAEntrypointVideoProc
VAProfileNone : VAEntrypointStats
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Simple : VAEntrypointEncSlice
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointEncSlice
VAProfileH264Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointEncSlice
VAProfileH264Main : VAEntrypointFEI
VAProfileH264Main : VAEntrypointEncSliceLP
VAProfileH264High : VAEntrypointVLD
VAProfileH264High : VAEntrypointEncSlice
VAProfileH264High : VAEntrypointFEI
VAProfileH264High : VAEntrypointEncSliceLP
VAProfileVC1Simple : VAEntrypointVLD
VAProfileVC1Main : VAEntrypointVLD
VAProfileVC1Advanced : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointEncPicture
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
VAProfileH264ConstrainedBaseline: VAEntrypointFEI
VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
VAProfileVP8Version0_3 : VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointEncSlice
VAProfileHEVCMain : VAEntrypointFEI
VAProfileHEVCMain : VAEntrypointEncSliceLP
VAProfileHEVCMain10 : VAEntrypointVLD
VAProfileHEVCMain10 : VAEntrypointEncSlice
VAProfileHEVCMain10 : VAEntrypointEncSliceLP
VAProfileVP9Profile0 : VAEntrypointVLD
VAProfileVP9Profile0 : VAEntrypointEncSliceLP
VAProfileVP9Profile1 : VAEntrypointVLD
VAProfileVP9Profile1 : VAEntrypointEncSliceLP
VAProfileVP9Profile2 : VAEntrypointVLD
VAProfileVP9Profile2 : VAEntrypointEncSliceLP
VAProfileVP9Profile3 : VAEntrypointVLD
VAProfileVP9Profile3 : VAEntrypointEncSliceLP
VAProfileHEVCMain12 : VAEntrypointVLD
VAProfileHEVCMain12 : VAEntrypointEncSlice
VAProfileHEVCMain422_10 : VAEntrypointVLD
VAProfileHEVCMain422_10 : VAEntrypointEncSlice
VAProfileHEVCMain422_12 : VAEntrypointVLD
VAProfileHEVCMain422_12 : VAEntrypointEncSlice
VAProfileHEVCMain444 : VAEntrypointVLD
VAProfileHEVCMain444 : VAEntrypointEncSliceLP
VAProfileHEVCMain444_10 : VAEntrypointVLD
VAProfileHEVCMain444_10 : VAEntrypointEncSliceLP
VAProfileHEVCMain444_12 : VAEntrypointVLD
VAProfileHEVCSccMain : VAEntrypointVLD
VAProfileHEVCSccMain : VAEntrypointEncSliceLP
VAProfileHEVCSccMain10 : VAEntrypointVLD
VAProfileHEVCSccMain10 : VAEntrypointEncSliceLP
VAProfileHEVCSccMain444 : VAEntrypointVLD
VAProfileHEVCSccMain444 : VAEntrypointEncSliceLP
VAProfileAV1Profile0 : VAEntrypointVLD
VAProfileHEVCSccMain444_10 : VAEntrypointVLD
VAProfileHEVCSccMain444_10 : VAEntrypointEncSliceLP
All the codecs you have asked about have a valid entrypoint, thus they
are supported for hardware video acceleration.
I have been using the laptop for about 3 hours now without charging it, and I am at 67%, which is 33% drop, so I can just times this time by 3, and in theory that means it should last for 9 hours at the current usage rate, but I do need to point out that I have also only been replying to emails and talking on XMPP, which are desktop applications and are relatively efficient.
I have noticed that although Intel has tried to make efficient CPUs for laptops, the added cores does cause higher idle energy draw, ideally you want the performance cores downclocked by a lot.
I assume you could optimise this for the best battery life by disabiling the performance cores and only keeping the efficiency cores, but at the end of the day this is x86, a complex instruction set, you don't expect good battery life.
In all honesty it is not even a big deal, I do not particularly care about the battery life its actually I would like to use as little power as possible, less power == less environmental impact, and also the energy bill is cheaper, the battery life is an added bonus!
Like... I do find it funny how people complain about battery life because you almost always have a charger on you, and there is plug sockets everywhere. In cafe, on the train, on the plane even in some bathrooms.
I am not going to pass up additional energy efficiency if it is easy to achieve thats all :)
Thanks for the help! Take care, -- Polarian GPG signature: 0770E5312238C760 Website: https://polarian.dev JID/XMPP: polarian@xxxxxxxxxxxx
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