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Old 26th May 2024, 17:22   #161  |  Link
oibaf
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Interesting. Is there a recent comparison of AV1 decoders? I remember there were in the past.
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Old 27th May 2024, 15:20   #162  |  Link
birdie
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Quote:
Originally Posted by oibaf View Post
Interesting. Is there a recent comparison of AV1 decoders? I remember there were in the past.
Everything but dav1d is dead slow.
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Old 15th June 2024, 19:07   #163  |  Link
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The main reason libgav1 existed is that Google temporarily suffered from the NIH (Not In Here) syndrome.
Some stuff from libgav1 made its way into dav1d and everything else is now history
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Old 20th January 2025, 17:23   #164  |  Link
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Changes for 1.5.1 'Sonic':
--------------------------

1.5.1 is a minor release of dav1d, focusing on optimizations and stack reduction:

- Rewrite of the looprestoration (SGR, wiener) to reduce stack usage
- Rewrite of {put,prep}_scaled functions

Now, the required stack space for dav1d should be: 62 KB on x86_64 and
58KB on arm and aarch64.

- Improvements on the SSSE3 SGR
- Improvements on ARM32/ARM64 looprestoration optimizations
- RISC-V: blend optimizations for high bitdepth
- Power9: blend optimizations for 8bpc
- Port RISC-V to POSIX/non-Linux OS
- AArch64: Add Neon implementation of load_tmvs
- Fix a rare, but possible deadlock, in flush()
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Old 23rd January 2025, 20:37   #165  |  Link
benwaggoner
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Originally Posted by birdie View Post
Everything but dav1d is dead slow.
A fine illustration of how much low-level optimization can improve signal processing performance. We can still see 4x improvements between "a lot of optimization" and "great optimization."
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