In this situation, are you obliged to yield the right of way to the vehicle approaching from the left?

In the video, you are approaching an intersection where there are no signs regulating the right of way, which means it is an unmarked (equivalent) intersection. In such a case, the general rule of priority from the right applies, resulting from Art. 25 para. 1 of the Road Traffic Act. Since the red vehicle is approaching from your left, you are not obliged to yield to it – it must yield to you.