d to by another package. This may mean that the package is missing, has be
ko cài ffmpeg dk bằng cái này thì cài ffmpeg qua các bản repo khác nhécài báo lỗi này là sao nhỉ ?
Mã:Package ffmpeg is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E:Package 'ffmpeg' has no installation candidate