Everyone knows that there is only one proper English, with the rest being mere derivatives that bastardize the spelling and grammar. Despite this, the hoodlums who staged a violent uprising against British rule in the American colonies have somehow made their uncouth dialect dominant in the information technologies that have taken the world by storm these past decades. In this urgent mission to restore the King’s English to its rightful place, we fortunately have patriotic British citizens who have taken it upon themselves to correct this grave injustice. Brave citizens such as [Declan Chidlow], whose BritCSS project is a bright beacon in these harrowing times.

Implemented as a simple, 14 kB JavaScript script to be included in an HTML page, it allows one to write CSS files using proper spelling, such as background-colour and centre. Meanwhile harsh language such as !important is replaced with the more pleasant !if-you-would-be-so-kind. It is expected that although for now this script has to be included on each page to use BritCSS, native support will soon be implemented in every browser, superseding the US dialect version. [Declan] has also been recommended to be awarded the Order of the British Empire for his outstanding services.

You want to learn assembly language. After all, understanding assembly unlocks the ability to understand what compilers are doing and it is especially important for time-critical code. But most tutorials are — well — boring. So you can print “Hello World” super fast. Who cares?

But decoding video data is something where assembly can really pay off, so why not study a real project like FFmpeg to see how they do things? Sounds like a pain, but thanks to the FFmpeg asm-lessons repository, it’s actually quite accessible.

According to the repo, you should already understand C — especially C pointers. They also expect you to understand some basic mathematics. Most of the FFmpeg code that uses assembly uses the single instruction multiple data (SIMD) opcodes. This allows you to do something like “add 5 to these 200 data items” very quickly compared to looping 200 times.

There are three lessons so far. Of course, some of the material is a little introductory, but they do jump in quickly to SIMD including upcoming instruction sets like AVX10 and older instructions like MMX and AVX512. It is no surprise that FFmpeg needs to understand all these variations since it runs on behalf of (their words) “billions of users.”

We enjoyed their link to a simplified instruction list. Not to mention the visual organizer for SIMD instructions.

The course’s goal is to prepare developers to contribute to FFmpeg. If you are more interested in using FFmpeg, you might enjoy this browser-based GUI. Then again, not all video playback needs high performance.

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