ist->dec_ctx->opaque = ist;
ist->dec_ctx->get_format = get_format;
ist->dec_ctx->get_buffer2 = get_buffer;
+#if LIBAVCODEC_VERSION_MAJOR < 60
ist->dec_ctx->thread_safe_callbacks = 1;
+#endif
av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&