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9th December 2020, 20:47 | #81 | Link |
Derek Prestegard IRL
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Downloadable content is often SD to reduce size for product reasons:
"oops I'm at the airport gate and forgot I want some shows to watch! I want them ASAP! Also my connection is currently congested WiFi / LTE" DRM requirements for SD are quite lax (software DRM is usually fine), so new codecs with software decoders are often okay there |
9th December 2020, 22:48 | #82 | Link |
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mpc-be 1.5.6.5797 beta has been released which includes dav1d 0.8.0 it also adds lots of other av1 related things: https://sourceforge.net/p/mpcbe/code.../Changelog.txt
Last edited by hajj_3; 9th December 2020 at 23:02. |
10th December 2020, 18:04 | #85 | Link |
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I hope that optimization gets done and is effective. With AV1 we finally have a codec with mandatory 10-bit support, but it's too slow to be practical on the platforms where AV1 is most advantageous. The big 2021 win with AV1 would be Chrome/Firefox as it's an upgrade from H.264. Without 10-bit, there's no HDR, and no option to look better than H.264, just lower bitrate.
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19th December 2020, 07:58 | #86 | Link | |
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With any luck Netflix might take pity on us desktop users and get someone to do the x86 10 bpc work after their current hire has finished doing the ARM32 10 bpc optimisations which are coming along pretty well at the moment. Last edited by soresu; 19th December 2020 at 08:00. |
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19th December 2020, 09:01 | #87 | Link | |
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It's good 10bpc is mandatory in the most basic profile but they should have taken it one step further and just got rid of 8bpc coding altogether. |
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19th December 2020, 12:56 | #88 | Link |
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Maybe someone knows how to set config parameters dav1d 0.8.0-7424f8e for gcc windows 16bit with SSE2.
For 8bit the decoder works but for 16bit no. Maybe increase memory size. WINVER=0x0602, _WIN32_WINNT=0x0602, ARCH_X86_64=1, CONFIG_16BPC, BITDEPTH=16, HAVE_ALIGNED_MALLOC Last edited by Jamaika; 19th December 2020 at 13:01. |
20th December 2020, 11:19 | #89 | Link | |
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If you build it with full default settings, dav1d will support all these bitdepths natively out of the box. You can turn off 8 bit or 10/12 bit, but unless you are very much size constrained, there is no reason to do so.
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20th December 2020, 13:14 | #90 | Link | |
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20th December 2020, 17:41 | #91 | Link |
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You are wrong. dav1d supports the entire AV1 spec fully.
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20th December 2020, 19:56 | #93 | Link |
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Just build dav1d with default config, no changes, and it'll support everything.
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20th December 2020, 22:13 | #94 | Link | |
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I suppose in this world it matters more to have comprehensive optimization for 8 bit content across even very old hardware. Seems odd to prioritize AVX512 for 8 bit over something like AVX2 for 10 bit tho :/ Of course all hollywood content is mastered in 10+ bit (even SDR) and is frequently delivered in 10 bit HEVC today. If I was building an AV1 encoding pipeline it sure would be ideal if I could just encode 10 bit and not worry about 8 bit at all.. |
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21st December 2020, 00:21 | #95 | Link |
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If I had to make a guess, I would say that desktop PC media consumption is not a priority for Netflix, Amazon etc, and a large part of their traffic is mobile or straight to TV or streaming devices, while YouTube sees a larger share on PC consumption.
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21st December 2020, 00:54 | #96 | Link |
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People watching on a PC/laptop generally won't click away just because the fans spin up, either, they'll just turn it up if they aren't already wearing headphones. Big difference from stuttering.
I wonder if SVT-AV1's assembly routines could be adapted; I don't know nearly enough about dav1d to know if Rust or the way data is set up would be a blocker, but at least the licensing is taken care of since the move. |
21st December 2020, 10:44 | #99 | Link | |
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21st December 2020, 22:52 | #100 | Link | |
Derek Prestegard IRL
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I'll agree that the vast majority of PC / Mac systems do not have HDR / 10 bit displays |
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