An issue with high traffic websites that stream video is that they need high IOPS that HDDs can't achieve. Usually even SATA SSDs are just fine. NVMe disks are faster and it's funny that they are nowadays cheaper than SATA for consumer grade products. Not sure about data center grade disks though. Hosting a lot of videos take too much space, so only 480GB is simply not enough. You would probably have to introduce TBs of disk space.
By the way, I would assume the bandwidth is 1Gbps unmettered, and that should be more than enough for most tubes. That's like 928MB/s on TCP, and your hardware will go down first, before the bandwidth is burnt. So, that's perfect offer.
What is your T1 peering? Using European data centers is usually good use case for storage servers for European traffic, but doesn't work really well for North American visitors, unless you have perfect T1 peering. What is the legal status of hosting adult content in Germany? I would assume Finland will work better in those terms.
You don't really need that much RAM (16GB is usually more than enough, 32GB in some rare cases), so you could save some bucks if that makes any difference. nginx is very memory optimized, and ffmpeg as well when you re-encode.
If you want to make top notch conversion servers, you could think about GPU encoding. Not sure about GPU prices nowadays (they are expensive), but you could also think of NVidia hardware encoding:
https://docs.nvidia.com/video-techno...th-nvidia-gpu/
In my experience, there's very seldom need for GPU encoding. Those Xeon servers are more than powerful for such a task. You might want to look for Xeon CPUs with a GPU. Intel QuickSync is something that can substantially improve speed of encoding:
https://ark.intel.com/content/www/us...SyncVideo=True
If those are semi-managed servers (if you set up KVS, ocassionally update servers, and take care of the infrastructure 24/7), your pricing is very competitive.
Hope my comments were helpful.