Understanding the difference between live view and playback is critical. Live viewing uses fewer hardware resources because the recorder simply passes the camera data through. Playback requires the hardware to actively read, decode, and transmit historical video files off the hard drive.
If the error persists after a reboot, your system might be exceeding its actual bandwidth or processing capacity: Reduce Bitrate Understanding the difference between live view and playback
: Recorders feature a fixed decoding capability (e.g., capability to handle 4 channels at 4K, or 8 channels at 1080p). Trying to play back eight 4K cameras simultaneously breaks this threshold. If the error persists after a reboot, your
You are trying to play back too many cameras at once (e.g., trying to play 16 cameras on an NVR that only supports 8 channels of simultaneous playback). : High-bitrate main streams can overwhelm the recorder's
: High-bitrate main streams can overwhelm the recorder's outgoing bandwidth. : Switch to the Sub-stream
The fastest temporary fix is to reboot the NVR or DVR. This kills any stale or frozen background remote links and refreshes the internal cache. Go to your NVR/DVR Local Menu. Navigate to > Shutdown > Reboot .