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-rw-r--r--fftools/ffmpeg_filter.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fftools/ffmpeg_filter.c b/fftools/ffmpeg_filter.c
index aacc185059..877fd670e6 100644
--- a/fftools/ffmpeg_filter.c
+++ b/fftools/ffmpeg_filter.c
@@ -340,6 +340,7 @@ int init_complex_filtergraph(FilterGraph *fg)
graph = avfilter_graph_alloc();
if (!graph)
return AVERROR(ENOMEM);
+ graph->nb_threads = 1;
ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
if (ret < 0)