What is interesting is that, if you watch the views of the engines during ascension, there are flames around the base of the engine(s) (only one? somewhat hard

What is interesting is that, if you watch the views of the engines during ascension, there are flames around the base of the engine(s) (only one? somewhat hard to tell) starting at T+00:14 and continuing off and on until around the first engine cutoff time (T+02:10). https://youtu.be/4qS5Vhz8VJo https://youtu.be/4qS5Vhz8VJo