[FFmpeg-user] buffer underflow (?)

Carl Zwanzig cpz at tuunq.com
Fri Sep 29 19:04:51 EEST 2023

On 9/29/2023 8:42 AM, Mark Filipak wrote:
> I do need help. I didn't write ffmpeg.

But you can pull down the code and read the concat muxer, which shouldn't be 
difficult if you've down real-time coding. There have been more than a 
couple of times when simply searching for the error message led me to the 
code and reading that lead me to what I needed to know. (I've even posted 
some of that research here.)

To answer one question- Why "buffer underflow"? Maybe it's the wrong error 
message for a specific condition _but_ we'll never have a clue without 
seeing console output (which, as Harald points out, you should know is 


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