this post was submitted on 12 Jun 2025
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The screenshot is from my desktop with wide enough screen on Lemmy web (programming.dev).
The issue is one of scaling.
When I open the image without being resized into the website layout, it has the following visual pattern:
When I zoom out to 50% it looks (almost?) fine
Did you scale the source with ffmpeg? Do you have a visual pattern in your console background? The simplest solution would be to have a solid color as background. The second best to render a small enough size that it does not get resized in the browser.
At 1920x1038, it's very big right now. I'm surprised the font is big enough to be readable. I assume you scaled it up or have a high dpi display resulting in this.
Thank you so much for this! Hopefully I'm not bothering you with this*.
I'm not entirely sure, but I don't think I did. The invoked command was the following:
❯ ffmpeg -i input.mp4 output.gif
I don't think I do. It doesn't look like it at least. To be clear, even on my laptop I notice the visual pattern visible in the gif. But that's totally absent when I'm working within Emacs. Or at least, it looks as if it's just a singular solid color.
Hmm..., makes sense. Not a huge fan, though 😅. Hopefully I can solve it through other means instead.
Yup. For the sake of readability*. But the upscaling (or rather zooming in*) was done natively within Emacs.
Alright, so I went to do some digging and the pattern only starts to show up in the gif. Perhaps as a result of the smaller color palette*. Regardless, I tried to see if it is solved by simply generating a 'better' palette and using it as a filter of sorts. Furthermore, in case that wasn't enough, I also tried playing with different dither algorithms:
Does any one of the above gifs do better?