static int vda_h264_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size) { VDAContext *vda = avctx->internal->hwaccel_priv_data; struct vda_context *vda_ctx = avctx->hwaccel_context; if (!vda_ctx->decoder) return -1; vda->bitstream_size = 0; return 0; }