avfilter/scale_npp: fix passthrough mode

[ffmpeg] / libavfilter / vf_scale_npp.c

diff --git a/libavfilter/vf_scale_npp.c b/libavfilter/vf_scale_npp.c
index c36772e8005ece8715d64ba44daa9fbb43502c0e..f64ab956c7b17c4ac52df2c05f5079204d02a50c 100644 (file)
--- a/libavfilter/vf_scale_npp.c
+++ b/libavfilter/vf_scale_npp.c
@@ -320,7 +320,11 @@ static int init_processing_chain(AVFilterContext *ctx, int in_width, int in_heig
     }
 
     if (last_stage < 0)
+    {
+        ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(ctx->inputs[0]->hw_frames_ctx);
         return 0;
+    }
+
     ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(s->stages[last_stage].frames_ctx);
     if (!ctx->outputs[0]->hw_frames_ctx)
         return AVERROR(ENOMEM);