I have some videos that I need to concatenate, but only until the video length has reached 10 minutes. How do I do this.
Use the -t 00:10:00
output option with the concat demuxer:
ffmpeg -f concat -i input.txt -t 00:10:00 output
If your videos do not have the same parameters use filtering to conform them, then use the concat filter to concatenate them.
See: