BLIND-TIME-BLUR(1)

💖 BLIND-TIME-BLUR(1) 💖

okay so bestie, welcome to BLIND-TIME-BLUR(1) from the General Commands Manual — this whole page is about blind-time-blur, and it's lowkey giving "stack new frames on old frames with partial alpha" energy. ✨

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🌸 NAME 🌸

blind-time-blur — draw new frames on top of old frames with partial alpha 🎨

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🎬 SYNOPSIS 🎬

blind-time-blur alpha-stream

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💫 DESCRIPTION 💫

So here's the vibe, bestie: blind-time-blur reads a video from stdin and a mask video from alpha-stream. The first frame from the video is printed to stdout as is, and the first frame from the mask video is ignored. Periodt. 🫶

Succeeding frames are drawn on top of the last frame printed to stdout, with its alpha cannel — yes, the page really says "cannel," no cap 💀 — multiplied pixel-by-pixel by the product of the luminosity and the alpha from corresponding pixel in the mask video, and then printed to stdout. Iconic little frame-stacking behavior. 💅

If stdin is longer than alpha-stream, the remainder of stdin is printed without any changes. If stdin is shorter than alpha-stream, the remainder of alpha-stream is ignored but may be partially read. That's the whole tea. 🍓

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👀 SEE ALSO 👀

• blind(7) — go read this too, bestie
• blind-single-colour(1) — another one, slay
• blind-gauss-blur(1) — and this one, fr fr

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💌 AUTHORS 💌

Mattias Andrée <maandree@kth.se> 💖

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mwah 🎀 this page ships with the blind 1.1 version (the footer didn't list a date, so I'm not inventing one, bestie 😭) and it's signed BLIND-TIME-BLUR(1). 💅✨