...... B727 nose wheel braking
That's why I said modern aircraft
...... Concorde et others
They are nose wheel snubbers, operational only after take off on nose wheel retraction to stop the wheels spinning too fast in the wheel well, so totally irrelevant here.
.... smoke from sudden nose wheel ground conact .....
With all wheels on the ground in this video, you later on see a violent nose down pitch associated with smoke from the tyres. To me this would indicate nose wheel braking, which the A320 family does not have.
Clyde Basher, if you can't see the wood for the trees, then I am sorry, I can do no more.
To all SLF out there, I apologise to you on behalf of all the other professional pilots, there are always one or two who will swear black is white.