if (nb_output) {
HEVCFrame *frame = &s->DPB[min_idx];
+ if (frame->frame->format == AV_PIX_FMT_VIDEOTOOLBOX && frame->frame->buf[0]->size == 1)
+ return 0;
+
ret = av_frame_ref(out, frame->frame);
if (frame->flags & HEVC_FRAME_FLAG_BUMPING)
ff_hevc_unref_frame(s, frame, HEVC_FRAME_FLAG_OUTPUT | HEVC_FRAME_FLAG_BUMPING);