Difference in videostreams either triggerd by sdk or low lewel protocol?

[f41ardu]

Is there a difference in the video stream?

Using SDK I have no problem to extract the video stream using openvc udp. But when I trigger the video stream using the low level protocol this don't work. Are file data and video mixed? And send tello file data and videostream to the same port and I have ti fidel out which data are belongig to file date and videostream?
Just wondering!!!