FFmpeg合成视频

~ # ls                                                    
avi2mp4.mp4                              家有儿女2.mp4
filelist.txt                             家有儿女3.mp4
test_result.avi                          家有儿女4.mp4
家有儿女1.mp4                            我是钢铁侠－东尼・史塔克.mp4
~ # vim filelist.txt
~ # cat filelist.txt
file '家有儿女1.mp4'
file '家有儿女2.mp4'
file '家有儿女3.mp4'
file '家有儿女4.mp4'
~ # ffmpeg -f concat -i filelist.txt -c copy 家有儿女1234.mp4 
[concat @ 0x7fd512813a00] Unsafe file name '家有儿女1.mp4'
filelist.txt: Operation not permitted

~ # ffmpeg -f concat -safe 0 -i filelist.txt -c copy 家有儿女1234.mp4

ffmpeg -f concat -safe 0 -i filelist.txt -c copy 家有儿女1234.mp4