In this situation, does the speed limit apply only to the outermost right lane?

The B-33 "speed limit" sign visible in the last phase of the recording is placed on the right side of the road above an information sign. According to regulations, a prohibitory sign positioned this way applies to the entire width of the roadway, i.e., all lanes in a given direction. For the limit to apply only to the far-right lane, the sign would have to be located directly above that lane or be accompanied by a plate indicating that it applies only to that lane.