[Steven Nagels]

Hi all,

I realize this is a very late reply but I found a solution for this problem and want to put it out there.
We also had this error popping up every time we would use FFmpeg and later found out that this was due to a problem of the program to access the webcam at sufficient speeds. We were using a cheap USB hub to combine the webcam, a USB mouse and a USB keyboard to one USB slot. In many cases, these hubs are still using the USB 1.1 protocol, which caused a bottleneck in data transport from webcam to program and thus was the origin of the buffer underflow problems…

In short: make sure your webcam is connected directly to your system (without hub’s in between) when confronted with this buffer underflow problem!

Kind regards