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tech

A collection of 180 posts

YouTube Ingest by Hand (Part 4)

A full day merging the audio and video segments from two AVAssetWriters, and the result is a black rectangle YouTube broadcasts and VLC refuses to play. ChatGPT is under heavy load, so I'm out in the cold guessing at sequence numbers and TRUN counts. To be continued.

YouTube Ingest by Hand (Part 4)

YouTube Ingest by Hand (Part 3)

Progress, of a sort: YouTube now wants exactly one audio stream, and a fixed filename format finally lets my files match. The reward for all this effort is a black rectangle. Still, progress is progress. To be continued.

YouTube Ingest by Hand (Part 3)

YouTube Ingest by Hand (Part 2)

Part two: I discover AVAssetWriter can write fragmented MP4 after all, so the manual atom-stuffing is off. YouTube's MPEG-DASH ingest remains thoroughly unimpressed, and the search for one missing requirement continues. To be continued.

YouTube Ingest by Hand (Part 2)

YouTube Ingest by Hand (Part 1)

Has anyone ever actually gotten YouTube's MPEG-DASH live ingest to work? The MPD is accepted, the media is accepted, and the stream never leaves "ready." A descent into ISO BMFF atoms, ChatGPT's Copy code button, and the slow erosion of my dignity.

YouTube Ingest by Hand (Part 1)

CameraMan or Who Watches the Watchmen?

Meet CameraMan, my latest personal project fallen victim to the day job: a Mac app for IP and USB camera streaming using VideoToolbox and MetalKit. It does ONVIF auto-discovery, which is a complete joke as a standard, but marginally better than nothing.

CameraMan or Who Watches the Watchmen?

App Distribution in the Post-TestFlight World or How Apple Restored Balance to iOS App Development

Back in early 2014, before Apple acquired TestFlight, I could build and publish an app in a moment's notice and let users iterate with me in the room. Blissful days. And then Apple shut it all down, restoring balance the way Agent Sands does in Once Upon a Time in Mexico.

App Distribution in the Post-TestFlight World or How Apple Restored Balance to iOS App Development

Parallela

I haven't been this excited about a Kickstarter in forever. Parallela: a 64-core RISC-based, Ubuntu-running computer arriving this coming May. The DSP work I could do with that. The only way it gets better is a Grand Central Dispatch equivalent to make the threading funner.

Free, Throw-Away Email Addresses

For a free, throw-away email address to feed annoying registration forms.

print_number() - an alternative for sprintf()

Probably premature optimization, but if you need that extra ounce of efficiency converting numbers to ascii, here's print_number(): 9.27 seconds against sprintf's 22.88, with optional zero-padding and a returned pointer to the char right after the number. Enjoy.

Phil "Boring" Schiller

On Schiller as Apple's new public face, an Atlantic Station smoking ban, hammock camping, and Alaska photos that may or may not arrive. A few quick, opinionated notes.

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