Bob wrote on Tue, 16 Feb 2016 14:35:20 +0000: > I tried to join these two file > But the output.wmv contains only the first file. Try the concat filter: ffmpeg -f concat -i <(printf "file '$PWD/%s'\n" ./*.wav) -c copy new.wav but check the transition between the files in new.wav. I recently failed with two mp4 files. Ingo