Description: Fix CMake modules for ffmpeg
Author: Roland Mas
Bug-Origin: https://bugs.debian.org/995791
Forwarded: no
Last-Updated: 2021-11-10

--- a/VTK/CMake/FindFFMPEG.cmake
+++ b/VTK/CMake/FindFFMPEG.cmake
@@ -154,6 +154,7 @@
     file(STRINGS "${_ffmpeg_version_header_path}" _ffmpeg_version
       REGEX "FFMPEG_VERSION")
     string(REGEX REPLACE ".*\"n?\(.*\)\"" "\\1" FFMPEG_VERSION "${_ffmpeg_version}")
+    string(REGEX MATCH "[0-9\.]*" FFMPEG_VERSION "${FFMPEG_VERSION}")
     unset(_ffmpeg_version)
   else ()
     set(FFMPEG_VERSION FFMPEG_VERSION-NOTFOUND)