I am a solo dev, just built an audio to video AI converter, with downloadable MP4, PDF and timestamps and a zip file of all the images generated per slide (about 30 AI images per 3min audio upload)

Everything stays client side, the users data never leaves their browser, they get AI transcription, AI image generation and a video with synced Karaoke style lyrics on screen with bouncing ball.

You can check it out at www.mrsdevops.com try it for free no sign-up to try. No credit cards ever needed on my end, all the payments are processed through stripe.

I wrote the 2500 lines of code in one monolith file, no libraries or dependencies to worry about keeping up with their technical changes.

I made the app for myself really because I had so many Suno songs (like 5000) and I wanted to make videos for You Tube but that proved to be quite time consuming, just to make one took me a couple days...so "a couple days" (2 days) to manually make a video for just one:
**
5,000 songs × 2 days/song = 10,000 days

10,000 days ÷ 365 days/year ≈ 27.4 years**

It would literally take over 27 years of non-stop work to make videos for all those songs manually! That's why I decided to write 2,500 lines of code to automate the process instead. Building that app probably saved me a couple of decades of tedious editing. It's called AudioSoul https://www.mrsdevops.com

-Mrs. Dev Ops****