The difference is that here I use SCP, and for Windows I used SFTP. That is because even after generating the keys with PuTTYgen I could not figure out how to “install” them into PuTTY to use a command pscp -scp (the PuTTY scp) in the Command Prompt. That and the fact that my teammate was more comfortable with GUIs, so I picked the first thing that worked.
I abandoned Windows years ago. And I don’t remember the exact moment, but I believe it was something akin to localization issues (my Windows was in Russian).
But in my line of work I deal with different developers on different systems, and lately I have had a situation, where one of my teammates had to use SFTP on Windows… If SFTP on Linux/Mac is a very easy one and done thing, on Windows – not so much.
So I figured out a solution for them.
Disclaimer: On the screenshots the GUIs of the programs are in Russian, but in my text instructions I go through everything in great detail. I also wrote this guide in Russian and translated it with Google Translate, because I feel so lazy right now – I slept like 10 hours without interruption and I feel like I hit gym yesterday (but I actually hit McDonalds).
My previous version has flaws. It works well for opaque GIFs, but OpenCV is famous for not being good with transparent images. So instead of OpenCV I use imageio for GIF iteration and PIL for adding GIF frames to the static background.
Why do more?
The original algorithm left these artifacts, look at the cyan block on the intersection of GIF frame and a darker abstract part:
Initially, I aimed to make one big post, but I am splitting it up. This Part 1 is about how I made the frames to generate videos from.
I have been on and off doing this project for a few months. Many things did not work for me – from ffmpeg to sheer OpenCV/ffmpeg installation on Apple M1 systems – and I am not 100% sure what made it work to this day. I plan to put myself in a situation where I have to do it again, and I will make a guide then. However, right now, I can only say that this video tutorial on running native ffmpeg and this guide from OpenCV themselves are good places to start.
The last time I used OpenCV was in 2017 when I worked on my graduate work. Back then, I processed prerecorded videos with no need to worry about audio. So I had some background prior to this project, but I was in no way ready for the ride.