LHR SFO

By Robert Ellison. Updated on Sunday, January 5, 2025.

BA 285

Google Pixel 8 Pro 18mm f2.8 1/35s ISO16

BA285

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(Published to the Fediverse as: LHR SFO #photo #plane #lhr #sfo Photo of BA 285, from LHR to SFO )

ITHCWY Newsletter for December 2024

Nanoplastics, Microplastics, Basketballs, Rice and Whales

Happy New Year!

I spent a few days near Shasta Lake over Thanksgiving. Here's a three night time lapse of the milky way. Also a couple of great hikes in the area: Clikapudi Loop (long) and Waters Gulch Loop (short). Some other travel time lapses include Bangalore and Lviv.

There was an election. I probably single-handedly evicted Biden and then endorsed Harris. Unfortunately my lifetime winning national election voting record stands at 1. And I got to vote in the US and the UK this year. Trump would probably have lost if Biden gave this speech I wrote for him. I do better in local elections and this year used OpenAI to semi-automate my California and San Francisco proposition guides.

I got my first electric vehicle - so should re-write this post to be far more righteous - and the hardest part was figuring out PG&E's shell game of rate plans. I ended up writing a python script to simulate my bill and it should work for anyone else trying to figure out this conundrum.

Kids should pay for MUNI. Most of them anyway.

I sort of fixed Rivian Drive Cam distortion and made a hyperlapse from San Francisco to Lake Shasta.

After a lot of previous moaning I have something nice to say about Android 15.

Please build a way to reply to voicemail using email. All the pieces are here now.

Previously:

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Chesil Beach

Chesil Beach Review

I know what this review is trying to say but nonetheless I have been chuckling for two days about all the women ruining the view on this 18 mile long beach, especially with the accompanying photos.

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(Published to the Fediverse as: Chesil Beach #etc #beach #chesil #dorset Women, ruining the view at Chesil Beach as usual. )

Winter Solstice 2024

By Robert Ellison. Updated on Sunday, January 5, 2025.

Winter Solstice 2024

Winter begins at 09:20 UTC on December 21, 2024, unless you're south of the Equator in which case happy summertime to you. Rendered in Catfood Earth.

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(Published to the Fediverse as: Winter Solstice 2024 #code #catfood #earth #winter #solstice The exact moment (09:20 UTC, December 21, 2024) of Winter Solstice as rendered in Catfood Earth. )

SFO LHR

BA 284

Google Pixel 8 Pro 18mm f2.8 1/25s ISO26

BA284

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(Published to the Fediverse as: SFO LHR #photo #plane #sfo #lhr Photo of BA 284, from SFO to LHR )

Bridgy Fed and A New Social

By Robert Ellison. Updated on Sunday, December 29, 2024.

The Fediverse

I've been Fediverse curious for a while, but even with its decentralized nature I'm not interested in creating content for someone else's platform. This blog has been federated for a little over a year thanks to Bridgy Fed, a nice free service that handles most of the gory implementation for you. I was delighted to learn this week that the project is now part of a non-profit, A New Social. Maybe the decentralized Internet stands a chance of coming back again? I'm cautiously optimistic and will be integrating a bit harder next year.

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(Published to the Fediverse as: Bridgy Fed and A New Social #etc #ithcwy #bridgyfed #fediverse A New Social is a non profit that is taking on Bridgy Fed and hopefully opening up the Fediverse. )

AI Wishlist: Use email to reply to voicemail

An AI makes a phone call for me

Google tried this with Duplex, but for the solved use case of making a restaurant booking. The restaurants didn't like it and we didn't need it.

What I want is - transcribe my voicemail and send me an email. During that step drop any obvious spam. If I choose to reply to the email phone the person back, repeatedly, until you get them on the line and convey the reply and take down any response.

This looks like Twilio for the telephony, Whisper for the transcription and OpenAI realtime for the conversation. Do I want it badly enough to build it? Maybe. I should do this first though.

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(Published to the Fediverse as: AI Wishlist: Use email to reply to voicemail #etc #lazyweb #openai #voicemail #email Use LLMs, OpenAI realtime, Whisper and Twilio to prevent the scourge of real time communication. )

I can finish a web page in Android 15!

The Android Activity Lifecycle (approximate)

I have occasionally been critical of Android, so I'm delighted to have something positive to report. For even fairly long articles I can now read the whole thing!

Over the last few updates my phone has become almost useless for reading. I'm probably an edge case in the TikTok era, but reading is important to me. Android has got progressively more psychotic about preserving battery life with Adaptive Battery and the war on background services and numerous other 'enhancements'. If I take my attention away from what I'm reading for a split second Android kills the process, plows salt into the memory it once occupied, and emails the developer to request an environmental impact statement.

In theory none of this should be a problem because Android has an activity lifecycle that tells the app it's going to be hung, drawn and quartered. The app can then save the current state and restore it when the user comes back to the app. Of course many developers can't be bothered with implementing this properly and Google seems to set a very bad example here. Chrome - back to the top of the article for you! Google news - full reload of a fresh slate of stories so the one you were reading isn't even in the list any more.

Android 15 blissfully fixes this and has done more than exercise, diet or beta blockers for my blood pressure.

I hope it's not a regression...

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(Published to the Fediverse as: I can finish a web page in Android 15! #etc #google #android Android 15 finally fixes background process killing, making it easier to finish reading long articles without frustration. )

San Francisco to Shasta Lake

On the road to Shasta Lake

A hyperlapse of the ~4hour drive from San Francisco to Shasta Lake in California. Shot on Rivian Drive Cam. Details for getting usable footage from that here. Edited in DaVinci Resolve.

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(Published to the Fediverse as: San Francisco to Shasta Lake #timelapse #video #hyperlapse #sanfrancisco #shasta #rivian Hyperlapse of the drive from San Francisco to Shasta Lake, I80, I505, I5. )

Fix Rivian Drive Cam Distortion

Corrected Rivian Drive Cam Frame

Rivians have a drive cam feature that will continually record footage from four cameras (front, rear, left and right) while you're driving. It's a built in dash cam which immediately got me excited to make hyperlapse style movies of interesting drives.

My first attempt was very, very sad. Rivian dumps out the footage in some fisheye format that looks terrible. It also often skips frames, so when imported to DaVinci Resolve the dread Media Offline error pops up all the time during playback. Insta360 Studio handles the dropped frames and so I created the hyperlapse there and tried to zoom in enough to fix the fisheye but overall I was very disappointed. Hopefully Rivian fixes the footage or provides some sort of tool to make this feature usable at some point.

Today I wrestled with the problem a bit more deeply and got something working. The image at the top of this post is a drive cam frame that is dramatically improved. The trick is using the lenscorrection filter in ffmpeg. The filter requires k1 and k2 coefficients which I solved for by generating hundreds of videos and eyeballing them, like the horrifying experience of visiting an optician and suspecting that they're going to write your prescription based on your opinion of which letter looks better. After much juggling I settled on -0.45 and 0.11. In terms of command line this translates to:

This re-encoding also has the happy side effect of fixing the dropped frames.

I would love to have some official numbers to plug in (hint, hint Rivian). My Rivian is a 2025 Gen 2 R1S - I have no idea how much the camera module varies between different Rivian variants so this might work for you or might need more fine tuning. Having cracked this I'm currently processing some footage of a trip to Shasta Lake and will post that soon (update - it's here).

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(Published to the Fediverse as: Fix Rivian Drive Cam Distortion #code #rivian #ffmpeg Using ffmpeg and the lenscorrection filter to fix the fisheye distortion on Rivian Drive Cam footage. )