Originally posted by brad0
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Dav1d 0.9.2 Released With More SSSE3, SSE4, AVX2, NEON Optimizations
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Originally posted by pegasus View PostWhy? I'd also like to know what is the oldest cpu capable of running these modern things ... would be a great input to all people recycling "old" computers and giving them a second life. For example, what is the oldest pc running modern software capable of playing lets say HD youtube stream? Or whatever else you want to define as minimum level of acceptance on today's internet ...
Well, let's cook a new PC "spec" : if it's got HDMI output it's good enough (although, Core2Duo with VGA-only Intel GPU is good enough too)
Need AV1 360p, 480p files or streams to test on crappy computers, but I think these streams will still be h264 in practice (or vp9 on youtube). Not too hyped on AV1 - in the context of a desktop, where the user needs a h264 decoder be installed else most videos don't work.
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Originally posted by pegasus View PostWhy? I'd also like to know what is the oldest cpu capable of running these modern things ... would be a great input to all people recycling "old" computers and giving them a second life. For example, what is the oldest pc running modern software capable of playing lets say HD youtube stream? Or whatever else you want to define as minimum level of acceptance on today's internet ...
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Originally posted by brad0 View PostThat's a weird assumption.
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Originally posted by MadeUpName View PostLow end CPUs won't have extensions like AVX2.
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Originally posted by schmidtbag View PostWhy? High-end systems don't struggle to do un-optimized video decoding. They might not do it efficiently, but most people don't buy such systems to consume media efficiently. So, knowing how low-end CPUs handle it is important, because that's what you're more likely to find in a HTPC.Last edited by brad0; 06 September 2021, 06:52 PM.
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Originally posted by brad0 View PostThat doesn't mean you go out and write poorly written inefficient software. That is common sense. But that is seriously lacking nowadays.
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Originally posted by brad0 View PostJust because I have the latest and greatest doesn't mean I want apps running inefficiently.
The difference is that computers that don't have AVX2 can run the SSSE3 instead of the C code, which helps massively. That's why those computers are what's really interesting in this case.
I'm writing this on an AMD Llano that will be 10 years this winter, and it is one of those. Remember that AVX2 came later on the AMD side. Its performance is good for anything I need, except AV1 decoding (drops frames above 480p, whereas VP9 is fine up to 720p).
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