FindMPEG

查找本地 MPEG 包含文件和库

此模块定义了

MPEG_INCLUDE_DIR, where to find MPEG.h, etc.
MPEG_LIBRARIES, the libraries required to use MPEG.
MPEG_FOUND, If false, do not try to use MPEG.

也定义了，但非通用用途的是

MPEG_mpeg2_LIBRARY, where to find the MPEG library.
MPEG_vo_LIBRARY, where to find the vo library.