i know that this update is incomplete, but just wanted to present the idea. i'll complete if it is wanted. i did this to get some information for a crash (reported elsewhere).
i looked into upgrading avidemux to the latest version, but it has a completely different build (using cmake), among other issues (i went thru the old patches, most are irrelevent, but some add sndio support, and i don't know where that would be added in to the new, very different, version). so, there was a previous patch that eliminated backtrack support for OpenBSD. i removed that patch (patch-avidemux_ADM_osSupport_ADM_crashdump_cpp), and made the following changes to the Makefile: --- multimedia/avidemux/Makefile.orig Wed Nov 5 13:36:15 2014 +++ multimedia/avidemux/Makefile Thu Apr 16 07:58:11 2015 @@ -37,7 +37,8 @@ LIB_DEPENDS= x11/gtk+2 \ audio/libvorbis \ textproc/libxml \ multimedia/xvidcore \ - multimedia/x264 + multimedia/x264 \ + devel/libexecinfo USE_GMAKE= Yes @@ -53,7 +54,7 @@ CONFIGURE_STYLE=gnu CONFIGURE_ENV+= CFLAGS="${PIE_CFLAGS} ${CFLAGS}" \ CXXFLAGS="${PIE_CFLAGS} ${CXXFLAGS}" \ CPPFLAGS="-I${LOCALBASE}/include -I${X11BASE}/include" \ - LDFLAGS="${PIE_LDFLAGS} -L${LOCALBASE}/lib -logg -lm -lz" + LDFLAGS="${PIE_LDFLAGS} -L${LOCALBASE}/lib -logg -lm -lz -lexecinfo" CONFIGURE_ARGS+=${CONFIGURE_SHARED} \ --enable-xv \ --with-x \