From a technology point of view, this is really cool.<p>From the view of someone that occasionally watches videos on YouTube, I am trying to figure out a nice way to say... I hate it. Or more specifically, I hate that it generates the voice, and basically enables video content spam.<p>What we don't need more of is cheap, easy to automatically generate videos that are basically spam and/or clickbait, trying to get views. The problem with auto-generated voices in videos like this is as a viewer I can't distinguish between work that someone put deliberate production time into, and something churned out by a content farm. The demo video even tricked me at first, I didn't realize it was a generated voice until a couple sentences in, at which point I had a visceral negative reaction, the same as when I accidently click on a content farm-generated video.<p>It seems a major feature is automatically syncing the narration to the slides. Perhaps a way to enhance this while avoiding spam generation is to use the generated voice only for internal timing, and generated a karaoke-like display for a narrator (human) to read? As a paid service, you could even provide professional voice-offers as an add-on.