I just watched the Small Faces documentary “All or Nothing”, there actually some footage of real performances, not the 60s lip sync drivel. Although there is plenty of that, of course. Some good interview time with Kenny and Ian & even a little with Ronnie Lane. It was late in the game for Ronnie at the time, I think.
Yes there’s a better video that focuses just on Ronnie Lane and has different interviews with Ian McLagan and Kenny Jones (and I think Eric Clapton and others). There are many interviews with Ronnie and footage of his mobile sound studio.