Author: Silveira

Hi, I'm a developer, lover of art and freedom (more). I write mostly about technology and pixel art.

“Morning Bell” by Iman Mersal

Published by Silveira on 15 August, 2023

The eye opens like a curtain rising
In the dark, feet search for something real
Consciousness hasn’t happened yet
And the floorboards are skin temperature
A fresh repetition, today will be one more or one less
An impromptu concert strikes up in the kitchen
Maybe this black coffee is the morning bell-
the prize you win for returning safe from sleep

ffmpeg video to png and png to video

Published by Silveira on 9 August, 2023

ffmpeg -i original.mp4 -vf fps=25 out%04d.png

ffmpeg -framerate 25 -pattern_type glob -i '*.png' -c:v libx264 -pix_fmt yuv420p out.mp4

head young female anime style svg vectorial

Published by Silveira on 12 July, 2023

female_head.svg

Skeleton playing accordion

Published by Silveira on 4 July, 2023

conditional past, present, future in spreadsheets/Excel

Published by Silveira on 27 June, 2023

=IF(B2=TODAY(),"Past",IF(B2<TODAY(),"Today",TEXT(B2,"ddd")))

Given a column B that contains dates in a sequential order.
Shows a “Today” when it’s today.
Shows a “Past” when is past.
Shows an abbreviated name of the day of the week.

Here is an example using emojis instead of past/today:

Mac: changing screenshots location

Published by Silveira on 22 June, 2023

mkdir ~/Desktop/screenshots

defaults write com.apple.screencapture location ~/Desktop/screenshots

killall SystemUIServer

Creates a directory in /Users/username/Desktop/screenshots.
Sets the default screenshot location to that directory.
Restarts the service responsible for screenshots.

New screenshots (?+Shift+3, 4 or 5) are now stored in ~/Desktop/screenshots.