Thank you @timbl for your feedback ! Generative Objects does much more that transforming Excel files (GO-XL is a sub-product), it is a fully fledge low code development platform that I am open sourcing and is used to build from scratch full web services and platforms. I have recently created a connector to SOLID and SPARQL data sources to create in minutes full applications leveraging SOLID and data sources like dbpedia.org. The demo application https://solid-demo.generativeobjects.com is built from scratch with Generative Objects with almost zero lines of manual code.
My intention is to connect Generative Objects to Solid and open source it to accelerate the creation of Solid applications and reach the critical mass of apps that would ensure the widespread and adoption of Solid. This is my gift to the community 
And the plan is the use the Generative Objects platform to build the social network I am proposing in this post. And I plan on doing this and delivering the first working version in no more than 2 to 3 months thanks to the low-code productivity promise.
This is exactly it. And also creating a social network on top of it.
Yes indeed, this part is straight forward.
And this part (and much more) can be built very fast with Generative Objects technology. Especially now that we have a Solid connector for Generative Objects.
In fact it can be pretty straightforward if done this way : you just access the video clip from your friends you are connected with in the social network and who was sharing the file to you ! And if you share the file yourself, you embark it on your own POD and your own friends and connections can stream the video from your POD. The use case is therefore :
In the social network, on my feed lists : I can see a friend who shared a video
I watch the video, I am streaming it from my friends’ POD
I like the video and want to share it on my profile
At the time of sharing the video, I embark it on my pod
When my own friends see my video sharing, they can watch the video by streaming it from my POD
However, if we want a public repository where people could search for videos and access them, then yes indeed we would need to have a proper discovery service on top of SOLID decentralized architecture. This can be done but is already another use case.
My first vision is to build a social network and do it the way I describe above. Also because every user will most probably pay for their own POD provider, and the more followers they have, the most they will have to pay to have sufficient bandwidth. Thus it would be important to limit who can stream a given video from a user POD to the friends/connection of this user to not involve more hosting cost for the user.
And yes, the value would be full decentralization of data, and of the social network itself, speed, resilience, and also a new way to ensure that the videos will not be tampered with, without having to rely on resource intensive technology like block chain. Instead of relying on the unbreakable quality of blockchain, you rely on the fact that a given video is potentially replicated so many time that someone who would push a tampered version would actually change the hash of the video that will not be the same as all the others copies … All the copies would have to be changed to tamper with the video, which would be impossible because stored in personal PODs. This is a bonus statement 
I just thought of it, and writing while thinking, so it might not be fully relevant …
maybe there is something in the middle to figure out, or a composition of both approaches. I like though the idea to leverage Solid and build a full new approach that relies solely on the core HTTP principles. I have a deep intuition that there is something very interesting to create here !