Created attachment 88258 [details] Patch addressing the issue. ffmpegthumbs distributes the same file for detecting ffmpeg as kdelibs4 and thus is affected by bug #338266 (https://bugs.kde.org/show_bug.cgi?id=338266). The same patch applies, but I'm not sure who the master source is for this file. In short: The pkg-config detection output is saved in a variable, but a different variable is used in the code below, breaking ffmpeg detection in non-standard locations.
Git commit afcc7af91967fb66145bef0c74f811b3c58da80c by Albert Astals Cid. Committed on 15/08/2014 at 21:04. Pushed by aacid into branch 'KDE/4.14'. FindFFmpeg: Use the right name for the pkg-config component variables. Commit 3194a35e ("Rewritten FindFFmpeg.cmake") introduced a regression in the find_component macro: the pkg_check_module() call uses PC_${component} as the variable name, while the calls to find_path() and find_library() use PC_LIB${component} instead. Fix the calls to find_path() and find_library(). Based on a patch by Thomas Klausner <tk@giga.or.at>, thanks a lot! Copied from kdelibs commit f6d33b3a2d1077c91425819de145ba2e5ae3cd87 FIXED-IN: 4.14.1 M +5 -5 cmake/FindFFmpeg.cmake http://commits.kde.org/ffmpegthumbs/afcc7af91967fb66145bef0c74f811b3c58da80c