I'd love to hear from a SpaceX engineer if their webcasts indeed shows live telemetry (speed / altitude) or not. Also SpaceX's webcasts illustrations looks like they run in a game engine which is both cheap and highly customizable with input data.
I also agree with your sentiment that the movie removes a bit of the scientific aspect.
Insert here a good 30 minutes spent on watching launch footage and writing down numbers
Ok, at this point I'm deep in looking at launch footage, and I'm more disappointed by the Soyuz launch footage. Whilst it's possible that they followed the exact same launch trajectory (on paper and reality), it's unlikely: MS-08 [2] and MS-09 [3] had the exact same speed, altitude and downrange distance throughout the time telemetry was visible. In contrast, SpaceX showed very different telemetry during launches to the ISS ([4], [5], [6]). Also, it doesn't seem pre-computed: The telemetry during the CRS-7 webcast [7] at least doesn't just continue when the rocket explodes, indicating that it doesn't just display pre-computed numbers.
In Soyuz' defense: They probably have a different (older?) system to get telemetry, and it might bear additional challenges to feed them into a publicly accessible live-stream.
[1] https://www.space.com/40153-spacex-launch-video-noaa-restric...
[2] https://youtu.be/iDebCdDHHpg?t=365
[3] https://youtu.be/00uftjSjcnk?t=364
[4] https://youtu.be/C_Gmgj3N_Z0?t=1270
[5] https://youtu.be/FCCyVCvN2bo?t=1179
That is correct. Proton-M launches, on the other hand, had a live stream with probably the most detailed telemetry ever. That particular stream wasn't public, but was available to anyone on request.
They seem to have closed it somewhere around 2014 or 2015, possibly to avoid bad publicity or speculations.
On mobile so sorry if it isn't the best link. The failure happens as the vehicle cross the 44km altitude mark I believe. So you can scrub to that point.
[1] https://www.nasa.gov/sites/default/files/atoms/files/public_...