diff --git a/ffmpeg.c b/ffmpeg.c
index 1fbae5e515..9ffa2fb9a3 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -2790,6 +2790,9 @@ static void opt_input_file(const char *filename)
     video_channel = 0;
 
     rate_emu = 0;
+    av_freep(&video_codec_name);
+    av_freep(&audio_codec_name);
+    av_freep(&subtitle_codec_name);
 }
 
 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,