windows opencv 编译, 下载 opencv_ffmpeg.dll等文件失败

【文件属性】：
文件名称：windows opencv 编译, 下载 opencv_ffmpeg.dll等文件失败
文件大小：107.47MB
文件格式：7Z
更新时间：2021-01-21 15:24:46
opencv4.5.0 opencv cmake 编译opencv 缺失opencv_ffmpeg.dll 、 opencv_ffmpeg_64.dll、ffmpeg_version.cmake等问题，只需替换下载替换.cache目录即可 ： opencv-4.5.0\.cache

【文件预览】：
xfeatures2d
----vgg()
--------e8d0dcd54d1bcfdc29203d011a797179-vgg_generated_48.i(755KB)
--------7cd47228edec52b6d82f46511af325c5-vgg_generated_80.i(989KB)
--------7126a5d9a8884ebca5aea5d63d677225-vgg_generated_64.i(894KB)
--------151805e03568c9f490a5e3a872777b75-vgg_generated_120.i(1.2MB)
----boostdesc()
--------232c966b13651bd0e46a1497b0852191-boostdesc_bgm_bi.i(15KB)
--------98ea99d399965c03d555cef3ea502a0b-boostdesc_binboost_128.i(269KB)
--------e6dcfa9f647779eb1ce446a8d759b6ea-boostdesc_binboost_256.i(537KB)
--------0ea90e7a8f3f7876d450e4149c97c74f-boostdesc_bgm.i(15KB)
--------0ae0675534aa318d9668f2a179c2a052-boostdesc_lbgm.i(416KB)
--------202e1b3e9fec871b04da31f7f016679f-boostdesc_binboost_064.i(135KB)
--------324426a24fa56ad9c5b8e3e0b3e5303e-boostdesc_bgm_hd.i(8KB)
ffmpeg
----37e2dadf776631acc8856e281f29cf42-opencv_videoio_ffmpeg.dll(20.59MB)
----cf5dba83edf8619f57ccff4edb989c62-opencv_videoio_ffmpeg_64.dll(21.46MB)
----f8e65dbe4a3b4eedc0d2997e07c3f3fd-ffmpeg_version.cmake(361B)
nvidia_optical_flow
----ca5acedee6cb45d0ec610a6732de5c15-79c6cee80a2df9a196f20afd6b598a9810964c32.zip(10KB)
ippicv
----879741a7946b814455eee6c6ffde2984-ippicv_2020_win_intel64_20191018_general.zip(34.14MB)
ade
----b624b995ec9c439cbc2e9e6ee940d3a2-v0.1.1f.zip(163KB)
data
----7505c44ca4eb54b4ab1e4777cb96ac05-face_landmark_model.dat(69.02MB)
.gitignore