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This is particularly important when running in exclusive mode because any delays will immediately cause glitching. The MinGW version in Cerbero is too old, so we can only enable this when building with MSVC or when people build GStreamer for MSYS2 or other MinGW-based distributions. To force-enable this code when building with MinGW, build with CFLAGS="-DGST_FORCE_WIN_AVRT -lavrt". https://bugzilla.gnome.org/show_bug.cgi?id=793289