參考
https://video.stackexchange.com/que...-one-large-file

cat file1.m2ts file2.m2ts file3.m2ts > joined_file.m2ts

copy /b file1.m2ts + file2.m2ts + file3.m2ts joined_file.m2ts /b

ffmpeg -i "concat:in1.m2ts|in2.m2ts|in3.m2ts|in4.m2ts" -c copy output.m2ts