Streaming video from a DVR with ethernet/serial port

[bobdxcool]

I have a DVR camera with a serial port and also an ethernet port. 4 cameras are connected to this DVR. I can connect this ethernet or serial port to my controller. From my controller board (running on ubuntu ) which also has GSM, would I be able to stream the video to a server ?

 

[andre_luis]

Assuming that you are dealing with the standard VGA images recorded at DVRs, arranged at a windowed 4:1 reduced scale, there is no reason to do not achieve at an ethernet connection 100BASE-T. By the way, the question lacks of additional details, as for instance the encoding scheme and the video frame rate.