To be clear, I’m not trying to discourage you from posting about your project and I think you should always pursue such personal challenges.

I also think it helps others better contextualize your project if you include a bit in your post about your motivation (like in your reply).

To me, it’s also very nice to mention alternatives you are aware of and how your project compares to them. “It’s doesn’t do as much as Handbrake but it’s simpler” is a selling point for some people.