lavfi/avfiltergraph: avoid to print "(null)" in the scale args

Fix parsing.
This commit is contained in:
Stefano Sabatini 2012-10-17 10:14:15 +02:00
parent 2969abd908
commit 8f37a1e8dc

View File

@ -358,7 +358,11 @@ static int query_formats(AVFilterGraph *graph, AVClass *log_ctx)
snprintf(inst_name, sizeof(inst_name), "auto-inserted scaler %d",
scaler_count++);
snprintf(scale_args, sizeof(scale_args), "0:0:%s", graph->scale_sws_opts);
if (graph->scale_sws_opts)
snprintf(scale_args, sizeof(scale_args), "0:0:%s", graph->scale_sws_opts);
else
snprintf(scale_args, sizeof(scale_args), "0:0");
if ((ret = avfilter_graph_create_filter(&convert, filter,
inst_name, scale_args, NULL,
graph)) < 0)