Hacker News: lmp88959

New comment by lmp88959 in "The case against JPEG XL"

lmp88959 — Tue, 15 Sep 2026 22:57:19 +0000

I don't know why you are being condescending to Julio. His work has pushed AV1 forward significantly. His opinions (specifically about dir-pred) are shared by others who are in the encoding space because they're objectively true. If a breakthrough for splines is invented, we'd be elated, but as it stands, dir-pred is in virtually every video/image coding standard since the late 90s for a VERY good reason. Dir-pred also has two decades of iterative improvement and research behind it. The argument is that JXL's lack of this well-established coding tool is a serious handicap that will make it very hard - if not impossible - to compete with AVIF within a reasonable amount of time.

AVIF was performing better than JXL/WebP/JPEG for a long while, even before Julio and Gianni's tune IQ work happened. AVIF successfully met the bar, tune IQ further increased that efficiency gap.

AV2 needs optimized encoders and decoders because it now needs to justify its spot among AV1 and JXL on the web. That's why avm, svt-av1 and dav2d are well underway.

New comment by lmp88959 in "The case against JPEG XL"

lmp88959 — Tue, 15 Sep 2026 21:53:24 +0000

I'm not sure if you're aware of this or not but juliobbv is the developer that fixed progressive AVIF, he is fully aware of how it works and how AV1 works in general.

"You'd waste a few KiB on encoding skip blocks" This tells me you don't know how codecs work... skip blocks are not expensive to code, they are very cheap.

Jake's blog post is outdated by the way, the progressive functionality is much more advanced than it was at that point in time because Julio worked on it.

New comment by lmp88959 in "rlsw – Raylib software OpenGL renderer in less than 5k LOC"

lmp88959 — Wed, 22 Oct 2025 14:25:15 +0000

Hey that's my project! Thanks for the shout out c:

Show HN: Wavelet video codec in less than 5000 lines of C

lmp88959 — Mon, 29 Apr 2024 11:47:28 +0000

Hi! I've made a simple video codec that is comparable to MPEG-1 / MPEG-2. There are example videos in the GitHub link's README. I also have a little video presentation about it. https://www.youtube.com/watch?v=zDm4GN-znBo

Comments URL: https://news.ycombinator.com/item?id=40197130

Points: 4

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