The video runs nicely and smoothly for about 10 min and stops but the ffmpeg process still keeps running (but in reality the streaming process does not work anymore) , I see the log of Wowza and it shows Zero sized function in wowza log, for ffmpeg it shows yellow warning QUEUE INPUT IS BACKWARD IN TIME (ffmpeg still was running but no streaming process was available to play on wowza).
Searching on Internet they say 'zero sized function' error is something with long pause, I tried to modified setenv.sh in several ways according to the performance tuning wowza page, but that still does not solve the problem. Do you know how to solve this QUEUE INPUT IS BACKWARD IN TIME and ZERO SIZED FUNCTION?
There are a number of reasons as to why you may see an error related to zero sized functions. Often it is related to lack of resources or memory. Please raise a
support ticket providing the details as described in the article and reference this thread and we can take a closer look.