Looks normal to me. If you want to reassure yourself just check the gas rate, convert to kW and compare with the manufacturer's values in the instruction book. From memory, the burners visible in your first video have maximum outputs of 1kW, 1.75kW and 3kW.
Edit: You shouldn't be able smell any gas while it is operating. (I don't think that's what you meant but I shouldn't assume things where safety is involved.)