+ if (audio_volume != 256) {
+ AVFilterContext *volume;
+
+ av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
+ "audio filter instead.\n");
+
+ snprintf(args, sizeof(args), "volume=%f", audio_volume / 256.0);
+
+ snprintf(name, sizeof(name), "graph %d volume for input stream %d:%d",
+ fg->index, ist->file_index, ist->st->index);
+ ret = avfilter_graph_create_filter(&volume,
+ avfilter_get_by_name("volume"),
+ name, args, NULL, fg->graph);
+ if (ret < 0)
+ return ret;
+
+ ret = avfilter_link(volume, 0, first_filter, pad_idx);
+ if (ret < 0)
+ return ret;
+
+ first_filter = volume;
+ pad_idx = 0;
+ }