diff --git a/fftools/ffmpeg.c b/fftools/ffmpeg.c
index 173ac3c9a0..84306818a2 100644
--- a/fftools/ffmpeg.c
+++ b/fftools/ffmpeg.c
@@ -528,6 +528,7 @@ static void ffmpeg_cleanup(int ret)
         for (j = 0; j < fg->nb_outputs; j++) {
             OutputFilter *ofilter = fg->outputs[j];
 
+            avfilter_inout_free(&ofilter->out_tmp);
             av_freep(&ofilter->name);
             av_freep(&ofilter->formats);
             av_freep(&ofilter->channel_layouts);