multithreading – Failed to obtain lock for new video threads

We are facing issue with a software which uses ffmpeg for conversion to h264

During a routine test for multiple camera for video loss on the software for more that 2 minutes

We get below message
“Failed to obtain lock for new video thread”

Since i am not into software developement i need to understand how we can optimise this so that this application can minimise cpu usage to 50% and or less but still no compromise on h264 quality during streaming and also recover video without any error during a failover test

Since i am not into software i could not test anything