-%bcond_with nonfree # non free options of package (currently: faac)
-%bcond_with aacplus # AAC+ encoding via libaacplus (requires nonfree)
-%bcond_with fdk_aac # AAC encoding via libfdk_aac (requires nonfree)
+%bcond_with bootstrap # disable features to able to build without installed ffmpeg
+%bcond_with nonfree # non free options of package (currently: faac, fdk_aac, nvenc)
+%bcond_with fdk_aac # AAC de/encoding via libfdk_aac (requires nonfree)
+%bcond_with faac # faac (requires nonfree)
+%bcond_without bs2b # BS2B audio filter support