On Thu, 29 Jun 2023 at 11:32, MacFH - C E Macfarlane - News <news at macfh.co.uk> wrote: > ffmpeg -f concat -i concat.txt -acodec copy -vcodec copy Result.mp4 Note that this would create one single file as opposed to ten, not sure if that's what OP wants. For the latter, a loop would be better as discussed. Cheers, Rob