cmdutils: make show_usage() use av_log()

Avoid printing on stdout when show_usage is used in an error message.

1 files changed, 3 insertions, 3 deletions

diff --git a/ffmpeg.c b/ffmpeg.c
index 15ce0894ac..13d7d6cf5e 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -4593,9 +4593,9 @@ static int opt_audio_qscale(OptionsContext *o, const char *opt, const char *arg)
 
 static void show_usage(void)
 {
-    printf("Hyper fast Audio and Video encoder\n");
-    printf("usage: %s [options] [[infile options] -i infile]... {[outfile options] outfile}...\n", program_name);
-    printf("\n");
+    av_log(NULL, AV_LOG_INFO, "Hyper fast Audio and Video encoder\n");
+    av_log(NULL, AV_LOG_INFO, "usage: %s [options] [[infile options] -i infile]... {[outfile options] outfile}...\n", program_name);
+    av_log(NULL, AV_LOG_INFO, "\n");
 }
 
 static int opt_help(const char *opt, const char *arg)