ff_videotoolbox_hvcc_extradata_create  752 libavcodec/videotoolbox.c         data = ff_videotoolbox_hvcc_extradata_create(avctx);
ff_videotoolbox_hvcc_extradata_create   56 libavcodec/vt_internal.h CFDataRef ff_videotoolbox_hvcc_extradata_create(AVCodecContext *avctx);