AV_HWDEVICE_TYPE_VIDEOTOOLBOX   77 libavutil/hwcontext.c     [AV_HWDEVICE_TYPE_VIDEOTOOLBOX] = "videotoolbox",
AV_HWDEVICE_TYPE_VIDEOTOOLBOX  244 libavutil/hwcontext_videotoolbox.c     .type                 = AV_HWDEVICE_TYPE_VIDEOTOOLBOX,