Here is one for you boys, I lost all playback on my HIKVision NVR. Due to my own stupidity I might add. I was playing with it and turned the bitrate up too high. After I paid for someone to come out to no avail ! I decided to have another play as I had nothing to lose. I put the bitrate down to 1024 and all popped back, my question being, what does the bitrate do and how high can it go up before it all goes south again. Thanks for taking the time to read this. Pete.