[FFmpeg-user] Concatenation buffer underflow problem

[Dzung Nguyen]

I created subvideos from image, using the following command:

ffmpeg -loop 1 -f image2 -i image.png -r 29.97 -t 10 video1.mpg

Then concatenate them using:

ffmpeg -f concat -i list.txt -c copy output.mpg

where list.txt has the list of subvideo files.

The problem is that the 2nd command has buffer underflow problem: packet
too large, ignoring buffer limit. How to fix it?