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oplav

465 karma · joined December 29, 2014

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oplav··on Docker Desktop no longer free for large companies
I don't use podman, but a quick search shows that you can install podman on Linux, Windows, and MacOS. Are you referring to something else?

https://podman.io/getting-started/installation

oplav··on Twitter starts to require login to view tweets
I think the Instagram experience is better on mobile web than it is on the app with regards to consuming less. The "timeline" on mobile web is only people I follow with no inserted ads. Same with stories, there are no ads.

The best thing is that the "Explore" tab is just a bit too slow in terms of responsiveness on mobile web. I spend a less time on there because it's not as pleasant to use as the app.

oplav··on Launch HN: Financial Choice (YC S21) – Checking accounts with market returns
Since Financial Choice only allows 50% accessible in Instant Access, in your home buying example I would need to have $120K in my account to make a $60K transfer (ignoring the possibility of a market downturn). Is a long term goal of Financial Choice for users to treat this less like a checking account where you hold cash for near term spending and more like a one-stop shop where all your assets are held?
oplav··on Launch HN: Financial Choice (YC S21) – Checking accounts with market returns
So is this essentially Fidelity's Cash Management Account with access to riskier investments?
oplav··on Glued to Your Phone? Here's How to Rethink Your Relationship with Social Media
I started exclusively using Instagram on my phone through mobile Safari and the experience is much better. There are no ads in either stories or the timeline. I don’t have any ad blocking set up on my phone.

The “Discover” section also isn’t as snappy as the app, so I find myself rarely using it. That section is what used to be my largest time sink when I used the app.

oplav··on MoviePass settles FTC allegations that they limited usage, exposed user data
I had a similar experience. Got to see lots of movies in a small, comfortable (and expensive) NYC theater while always pre-picking my seats.
oplav··on Potential Cloudflare Outage
https://www.cloudflarestatus.com/incidents/zbzjv8sm3g94
oplav··on Ask HN: Who is hiring? (June 2021)
Major League Baseball (MLB) | Senior Software Engineer | NYC

You’ll be joining the Sports Emmy-nominated team behind Sporty Bot [1] and Film Room [2]. Some of the projects you will be working on include: building GQL APIs that can handle millions of concurrent users, creating an NLP based video search, working on a recommender system to suggest the right content to our fans and building video processing pipelines.

https://www.mlb.com/careers/opportunities?gh_jid=3006795

[1] https://www.mlb.com/video/sporty-bot

[2] https://www.mlb.com/news/mlb-film-room-launch

oplav··on How I Practice Piano
A more generic rule I heard later on was to not use your thumb on black keys (when playing scales). That constraint can sometimes help with other fingerings falling into place more intuitively.
oplav··on Instagram ads Facebook won't show you
https://www.reddit.com/r/TargetedShirts
oplav··on Ask HN: What are the best maintained how-to sites for Linux?
I find their installation docs for various programs really helpful too since it often walks through what each step is doing. For example, here's installing ffmpeg: https://www.linuxfromscratch.org/blfs/view/svn/multimedia/ff...
oplav··on Deep dive in CORS: History, how it works, and best practices
Something I've recently seen more of is people thinking an issue is a CORS issue when in fact it's just an unhealthy service 500ing on the OPTIONS request. I've seen a couple debugging threads get derailed at the start with "this is a CORS issue" because the first person to open a Chrome console scanned and saw "CORS error" on the failed request (I'm guilty of this myself).
oplav··on New York Times tech workers form a union
That's interesting. Maybe it's too small a sample, but I always found it interesting that NYT has at some point employed two very influential frontend developers: Mike Bostock (d3) and Rich Harris (svelte, rollup).
oplav··on Game Engine: How I Implemented Skeletal Animation
Very cool! What file format did you find easiest to work with? I've been doing some work on skeletal animations and the most common format I've come across is BVH [0], but that only captures animation and bone hierarchy.

[0] https://research.cs.wisc.edu/graphics/Courses/cs-838-1999/Je...

oplav··on Space Jam's 1996 website has finally been updated
Created with Adobe Premier 4.2.

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'spacejam.mov':
    Metadata:
      creation_time   : 1996-10-24T17:18:51.000000Z
      premiere_version: Created with Adobe Premiere 4.2
      quicktime_version: Created with QuickTime 2.0 or later
    Duration: 00:02:14.87, start: 0.000000, bitrate: 458 kb/s
      Stream #0:0(eng): Video: cinepak (cvid / 0x64697663), rgb24, 160x120, 365 kb/s, 8 fps, 30 tbr, 30 tbn, 30 tbc (default)
      Metadata:
        creation_time   : 1996-10-24T17:18:51.000000Z
        handler_name    : Apple Video Media Handler
        encoder         : Cinepak
      Stream #0:1(eng): Audio: pcm_u8 (raw  / 0x20776172), 11025 Hz, 1 channels, u8, 88 kb/s (default)
      Metadata:
        creation_time   : 1996-10-24T17:18:51.000000Z
        handler_name    : Apple Sound Media Handler
oplav··on Fed up with the Mac, I spent six months with a Linux laptop
I switched from Windows to OS X over 7 years ago and this is the first time I've ever learned about Quicklook. Looks like a great feature.
oplav··on Comparing H.265 (HEVC) and H265 video file size
Most Turing and above Nvidia cards have support for hardware accelerated decode of h.265 [0]. Modern Intel chips also support hardware accelerated decode (support started with Skylake [1]). Not sure about AMD.

[0] https://developer.nvidia.com/video-encode-and-decode-gpu-sup... [1] https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video#Hardwar...

oplav··on Comparing Svelte and React
No, they are functionally the same.
oplav··on Show HN: Generate a 3D model that looks like you and apply AR animation effects
Very cool! Is exporting the model as an FBX or in glTF on your roadmap?
oplav··on Algorithms by Jeff Erickson
Yes, the X73 courses were theory based. Something changed after I graduated and now I think CS 374 is the algorithms course, but I'm not sure.

If you want to start with the fundamentals, CS 173 (Discrete Structures) is required of all undergrad CS majors and is the first of the sequence (usually taken as a freshman/sophomore). The book is available online along with problems/solutions: http://mfleck.cs.illinois.edu/building-blocks/index.html

oplav··on Algorithms by Jeff Erickson
Here's a previous post on HN with lots of discussion: https://news.ycombinator.com/item?id=18805624
oplav··on Using computer vision to help win $1M in Mountain Dew's Super Bowl contest
Here's the fine print. One account per participant.

> NO PURCH. NEC. Begins when Sponsor Tweets this commercial on Sponsor’s timeline at https://Twitter.com/MountainDew (no earlier than 2/7/21) and ends when a verifiable entrant Tweets the correct number of Mtn Dew Major Melon bottles, regular or Zero Sugar, (including 3D, drawn, neon, metallic & any color) that appear in this commercial or 3/31/21, whichever comes first. Limit one Twitter account allowed per participant. Winner must be verified. Subject to complete Official Rules, at lifechangingDEW.com. Open to legal res of 50 US/DC, 18+ (19+ in NE&AL). Potential winner subject to background check per Official Rules. Void where prohibited. To Enter, visit Twitter.com/MountainDew. Sponsor: Pepsi-Cola Company, 1111 Westchester Avenue, White Plains, New York, NY 10604. The NFL Entities have not offered or sponsored this promotion in any way.

oplav··on How to stream media using WebRTC and FFmpeg, and why it's a bad idea
H264 is also supported though it's limited to the Constrained Baseline profile [0]. That said, I have been able to use an H264 stream encoded with a Main profile that still worked in Chrome, so it could just be a strong recommendation.

https://developer.mozilla.org/en-US/docs/Web/Media/Formats/W...

oplav··on Show HN: BFS, Dijkstra and A* interactive demo made in React
Nice job!

For others who want to play with visualizing different search algorithms, this is another cool tool:

https://qiao.github.io/PathFinding.js/visual/

oplav··on [dead]
How does this work? Who owns these properties, which look like individual single family homes?
oplav··on Hallucinations re: the rendering of Cyberpunk 2077
> They're then arranged in a hierarchy, so that a parent bone's transform (translate/rotate/scale) applies to its children, and so on. So for example, rotating an upper arm bone causes the forearm bone to rotate with it.

How do you reconcile noise in motion capture data to bone transformations? For example, isn't it possible that the motion capture data slightly elongates or shortens the forearm in a way that makes it impossible to maintain the relationship with the upper arm bone?

In my head, it feels like you would have to pick the closest point on the sphere that's created if you rotate the forearm all around the elbow joint, but that seems expensive to do everywhere all the time.

oplav··on Show HN: Boltstream – Self-hosted full end-to-end live video streaming platform
Safari supports HLS natively, but hls.js is a widely used library that support HLS via MSE.

https://github.com/video-dev/hls.js/

oplav··on Video of Arecibo Collapsing
The view from the drone in that thread is also incredible.

https://mobile.twitter.com/thesheetztweetz/status/1334536726...

oplav··on Ask HN: Who is hiring? (December 2020)
Major League Baseball (MLB) | New York City (NYC) | Computer Vision Engineer | Full Time

https://grnh.se/7ff8e7371us

We’re looking for an expert in Computer Vision to create the code powering Major League Baseball. The Baseball Data team is tasked with analyzing the data captured on the field. With the launch of Statcast in 2015, MLB began tracking ball and player movements for each and every play. This role will involve combining our various data sources with video in near real-time to further our understanding of what is happening on the field. Potential projects include broadcast graphics powered by camera calibration, and developing a machine understanding of the game by leveraging our ball tracking and player tracking systems.

oplav··on 30 years later, QBasic is still the best
I agree. I forget when I first started playing around with BASIC, but it helped once I got to high school and had a TI graphing calculator. Those calculators have a variant called TI-BASIC and I had a lot of fun coding and playing my own “Guess A Random Number” game.
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