FFmpeg by Example

FFmpeg By Example is a documentation website to showcase all the unique and different ways to use FFmpeg. Got a cool idea to share with the community? Send your contribution here! No Preview. If you feel like this example could be improved, you may edit this example here.

Homomorphic Encryption in iOS 18

https://boehs.org/assets/Pasted%20image%2020250109220746.png
Homomorphic Encryption)来在照片应用中实现私有搜索功能,而不泄露用户数据。但是,由于性能限制,他们使用了一种修改版本的同态加密,即半同态加密(Somewhat Homomorphic Encryption)。这种方法允许服务器处理查询而不了解实际数据,但仍引发了数据所有权和泄露潜在风险的担忧。

Free Music Archive

https://freemusicarchive.org/img/header-bg.jpg
In this podcast series, the FMA Team will shine a spotlight on Free Music Archive's artists, FMA's very own music insiders, as they share with us a little bit about their music journey.

Don't use cosine similarity carelessly

https://p.migdal.pl/blog/2025/01/dont-use-cosine-similarity/python-summit-2024-warsaw-migdal-cosine-talking.jpg
Data scientists use vector embeddings to compare similarities, but cosine similarity can be misleading due to its simplicity and lack of nuance. A better approach is to use task-specific embeddings or preprocess text before embedding it to get more accurate results.

Nevada Court Shuts Down Police Use of Federal Loophole for Civil Forfeiture

Cloudflare Ray ID和触发阻止的行为详细信息。

Customasm – An assembler for custom, user-defined instruction sets

https://opengraph.githubassets.com/47c554d8ee7fd7e369f7fcfeb58201b097547ca7655c7806dc9ec43df1049bf6/hlorenzi/customasm
customasm 是一个用于自定义指令集的汇编器。它可以通过 cargo install customasm 安装,也可以通过 cargo build 从源码编译。

I failed moving my Google calendar to Proton

https://bear-images.sfo2.cdn.digitaloceanspaces.com/shilin/screenshot-from-2025-01-14-23-24-19.webp
Google服务转移到Proton服务后,遇到了Proton日历的问题,特别是导出和同步日历方面的问题。他们无法从其他应用程序中添加事件到日历,因为Proton的限制。

Life on a Closed Timelike Curve

To ensure we keep this website safe, please can you confirm you are a human by ticking the box below. If you are unable to complete the above request please contact us using the below link, providing a screenshot of your experience.

Home Loss File System

https://lh7-us.googleusercontent.com/docs/AHkbwyJh0J8P8X46uNNeNHD_7BnHHqWXUwoBZGSwPPETXvhG4oYfyboisUw-ZUHtrowsTlIxQN2I6BwScvvIkLcO_FROScuHUsNWb6mMD3yZGhzTa8CC6iCI=w1200-h630-p
2003年塞德尔大火后的系统,可以根据需要进行定制和扩展。

How rqlite is tested

https://philipotoole.com/wp-content/uploads/2025/01/sloc-test-300x257.png
rqlite 使用测试金字塔(testing pyramid)的方法,测试金字塔的基础是单元测试(unit tests),中间层是集成测试(integration tests),顶部是端到端测试(end-to-end tests)。这种方法确保了测试效率高、测试目标明确、测试容易调试,从而维持了分布式关系数据库的高质量和可靠性。

Distributed Transactions at Scale in Amazon DynamoDB

https://blogger.googleusercontent.com/img/a/AVvXsEiK7WDKU-lrvnGQtLR_hfnBoKNCRw1s87tprZQMXHWYzBwDSltJwUPcW-I5MLDsZkMP4geWQ0_d3anREK12CUYzJ5HYAMT3gIL4RvXmIt2dZKQ6pEu5VNMQHcQKpSdhRGWxd-0ZUiMUB6qU0x7ahO1iDzaUjySDXZ7YMlEAVSnSjdU3FFTI9qMbT4ZlmOc=w640-h326
This paper appeared in July at USENIX ATC 2023.If you haven't read about the architecture and operation of DynamoDB, please first read my summary of the DynamoDB ATC 2022 paper. The big omission in that paper was discussion about transactions. This paper amends that. It is great to see DynamoDB, and AWS in general, is publishing/sharing more widely than before. A killer feature of ...

Show HN: Pyper – Concurrent Python Made Simple

https://raw.githubusercontent.com/pyper-dev/pyper/refs/heads/main/docs/src/assets/img/pyper.png
Pyper 是一个灵活的框架,用于并发和并行数据处理,基于函数式编程模式。它提供了一个直观的 API,用于统一线程、多进程和异步工作。它允许用户使用 `pyper.task` 函数定义任务管道,并使用工作者和队列并发或并行执行它们。

Take the Pedals Off the Bike

https://www.fortressofdoors.com/content/images/size/w2000/2025/01/IMG_2844.jpg
The author's daughter struggled to learn bike riding with the traditional method, but a new approach worked better. The new method involves removing pedals and teaching balance by running and coasting before adding pedaling.

Das Blinkenlights

https://rodyne.com/wp-content/uploads/front-panel.jpg
LED显示屏,用于他们的Raspberry Pi NAS服务器,灵感来自于老式的主机机器。他们设计并制作了2U面板,使用了128个LED,PIC16F1782微处理器和移位寄存器,并将设计和代码免费分享在网上。

Transformer^2: Self-Adaptive LLMs

https://sakana.ai/assets/transformer-squared/octopus.jpeg
Transformer²,一个自适应的机器学习系统,它可以根据不同任务调整其权重,从而使LLMs能够在实时动态适应新任务。这种系统在效率和任务特定性能方面优于传统方法,预示着未来AI模型不再是静态的。

Virtual Vette – Racing Simulator Built from Wrecked Corvette

https://content.instructables.com/FMQ/5ONI/M5PCAIWG/FMQ5ONIM5PCAIWG.jpg?auto=webp&frame=1
1980年Corvette的捐赠车辆、铝合金框架和游戏组件,打造了一辆定制的Corvette模拟器。该项目涉及了大量的修改,包括焊接、玻璃纤维修复和内饰修复,创造出独特的游戏体验。

Cosmos Keyboard: Scan your hand, build a keyboard

https://ryanis.cool/cosmos/alien.svg
Cosmos是一款键盘设计工具,使用手机摄像头扫描来创建自定义键盘,具有ergonomic布局。它支持各种开关、键帽和微控制器,并且可以导出3D可打印模型。

Show HN: Simplex: Automate browser workflows using code and natural language

Simplex builds tools for developers to control the web using natural language.

Getting an all-optical AI to handle non-linear math

https://cdn.arstechnica.net/wp-content/uploads/2025/01/image-1-640x427.jpeg
410个-pic秒的延迟,这比标准CPU快了58倍。这种芯片可以用于需要快速处理的应用,如自主汽车和汽车视觉系统。

Servo vs. steppers: Speed, Torque and Accuracy [video]

Why is homeschooling becoming fashionable?

https://substackcdn.com/image/fetch/w_520,h_272,c_fill,f_auto,q_auto:good,fl_progressive:steep,g_auto/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F319d1573-461d-40ea-a807-d184246c44b5_3021x1973.jpeg
The author, a former homeschooler, criticizes tech parents for viewing homeschooling as a high-status option, citing its historical association with academic freaks and religious extremists. They argue that homeschooling can isolate children from average people and hinder their social development.

Show HN: A blocklist to remove spam and bad websites from search results

https://opengraph.githubassets.com/a79653b98f9d165c04e45166955a7c0fda5c0075f65a747627bc25f9c3e11cd8/popcar2/BadWebsiteBlocklist
blocklist)旨在从搜索结果中移除低质量的网站,并且它的组织结构包括每个被阻止网站的说明。它是一种订阅服务,能够保持最新,并允许用户通过创建问题(issue)来贡献。

Rewriting my website in plain HTML and CSS

https://www.vijayp.dev/blog/rewrite-plain-html/before.png
HTML 和 CSS 来代替 SvelteKit 的打包器和构建生态系统,因为他们对这些工具感到沮丧。他们实现了更简单的项目结构,并且网站大小减少了 50%,但是他们遇到了代码重复和实时重载的问题。

Google’s OAuth login doesn’t protect against purchasing a failed startup domain

https://framerusercontent.com/images/QaJr85hoCYMZZeUSiV7HloTxelY.png?scale-down-to=512
Google 的认证漏洞允许攻击者通过购买一家失败的初创公司的域名并使用它重建电子邮件账户来访问旧员工账户。直到 Google 实施一个修复以在 OpenID Connect 声明中添加不可变标识符,百万美国人的数据和账户仍然处于危险之中。

Reversible computing escapes the lab

https://spectrum.ieee.org/media-library/an-image-of-a-computer-chip-connected-to-a-ball-of-yarn.png?id=55368815&width=1200&height=1584
Michael Frank)离开了桑迪亚国家实验室(Sandia National Laboratories)加入了Vaire Computing,这是一家专注于可逆计算(reversible computing)的初创公司。可逆计算有可能实现4,000倍的能效提高。Vaire的第一款原型预计能够在算术电路中恢复使用的能量,计划在2027年推出更先进的芯片。

Show HN: WASM-powered codespaces for Python notebooks on GitHub

https://docs.marimo.io/_static/share-wasm-link.gif
Marimo是一个免费的在线WebAssembly笔记本平台,用于创建和分享WebAssembly笔记本,适合实验和原型设计。笔记本可以保存、分享和嵌入到网页中,具有多种自定义选项。

Estimates of plant CO2 uptake rise by nearly one third

https://www.ornl.gov/sites/default/files/styles/large/public/2024-10/rainfoest.png?itok=IK-gr3ph
31%,每年通过光合作用从大气中移除157亿吨碳。这一新的估计提高了地球系统模拟的准确性,强调了自然碳固定对于减少温室气体的重要性。

Show HN: Value likelihoods for OpenAI structured output

structured-logprobs 是一个用于 Python 的库,它增强了 OpenAI 的结构化输出,并提供了详细的 token 日志概率。它为 LLM 输出提供了可靠性的见解,并且可以与 OpenAI 的结构化输出功能一起使用。

Road signs to help people limit radiation exposure in contaminated areas

https://images-stag.jazelc.com/uploads/theautopian-m2en/Screenshot-2025-01-10-174959.png
MUTCD) 规定了美国的路牌,包括1960年代的民防路牌,建议驾驶者在受污染地区以高速行驶。这些路牌,现在归属于应急管理部门,最初是为未曾发生的核战争场景而准备的。

The Missing Nvidia GPU Glossary

https://modal.com/assets/gpu-glossary-og.png
GPU文档概念而创建的。它是一份带有链接页面的超文本文档,方便导航和理解。