Aren't modern video codecs prohibitively computationally expensive for mediocre office-class PCs?
My laptop doesn't have a 1080p screen, but trying 1080p it could do some videos better than others.
in this one I only dropped 2 frames:
https://www.youtube.com/watch?v=m1jY2VLCRmY&list=PLAMlLc3Zgg...
I'm sorry for being ambiguous. I meant encoding, not decoding. In my opinion an average PC should be able to encode at least some minutes of video in reasonable time.
Whatever, having to recourse to frame dropping (even in a negligible degree) means having 100% CPU or IO load already reached, doesn't it? 100% load on 720p playback sounds bizarre. I have been accustomed to any video playback taking just a few percents on any old computer with Intel graphics.
> I have been accustomed to any video playback taking just a few percents on any old computer with Intel graphics.
it's using like 160% of a hyperthreaded core, so not even completely saturating a laptop from 2015 (8 years ago) - I don't know why it needs to drop frames though (single core too slow?)
I mean ANY phone. My phone is $160 from 2019 and it can play 1440p AV1 on youtube (with a few frame drops, but nothing noticeable), even though it has a 720p screen. I'd have to get my OnePlus 3 (2016) to stutter in 1440p
note that the OnePlus 3 would stutter in h264 1440p as well, it's just old
https://www.spiedigitallibrary.org/conference-proceedings-of...
“Overall AV1 real-time playback of 720p 30fps @ 2Mbps is feasible for low-end devices with 4 threads and 1080p 30fps @ 4Mbps is feasible for high-end and mid-range devices with 4 threads using Dav1d decoder.”
we're talking about hours of playtime before you run out of power, you can verify this on your own phone on youtube right now, go enable av1 and marvel at how YOUR phone can play these videos at 1080p
> Overall AV1 real-time playback of 720p 30fps @ 2Mbps is feasible for low-end devices with 4 threads and 1080p 30fps @ 4Mbps is feasible for high-end and mid-range devices with 4 threads using Dav1d decoder
Why only 4 threads? My phone from 2020 has 8 cores/8 threads and a 720p screen
https://www.gsmarena.com/oppo_a32-10454.php
So even if it doesn't handle some 1080p videos that I haven't tested, I should probably be watching them at 720p since that's all my phone can do.
Of which half of them are small cores (Cortex-A53), which is pretty likely to throw a spanner in the works of the threading model. But hey, feel free to inform the dav1d authors that their dav1d paper benchmarked dav1d wrong.
Anyway, this point might be moot because dav1d has released several versions with further NEON optimizations after the paper
https://code.videolan.org/videolan/dav1d/-/tags/1.1.0
“720p real-time AV1 software playback on the large majority of Android devices out in the wild is now a reality.”
The Sony Xperia 1 series does (along with a headphone jack, microSD card support, notification LED, a hardware camera button, no hole in the screen for the front camera, etc.).