how can we join two mpg files using ffmpeg?

how can we join two mpg files using ffmpeg? i have tried cat file1.mpg file2.mpg > output.mpg But it shows cat is not a recognize开发者_如何转开发d internal or external command error. Please help

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mpg container can be simply concatenated w/o any transcoding. which platform? if you're on windows (taking into account your error message), you need to use:

copy file1.mpg /b + file2.mpg /b output.mpg /b

/b indicates binary files