diff --git a/curb_your_enthusiasm.lua b/curb_your_enthusiasm.lua
index 04cc0f0..dbc3e32 100644
--- a/curb_your_enthusiasm.lua
+++ b/curb_your_enthusiasm.lua
@@ -28,7 +28,7 @@ local function video_silences (video_filename, decibel, duration)
     assert(type(duration) == 'number')
     --
     local log_filename  =  os.tmpname()
-    os.execute(('ffmpeg -i "%s" -af silencedetect=n=%sdB:d=%s -f null - 1> /dev/null 2> %s'):format(video_filename, decibel, duration, log_filename))
+    os.execute(('ffmpeg -loglevel panic -y -i "%s" -af silencedetect=n=%sdB:d=%s -f null - 1> /dev/null 2> %s'):format(video_filename, decibel, duration, log_filename))
     local f = io.open(log_filename)
     local silences  =  {}
     for line in f:lines() do
@@ -70,11 +70,11 @@ local function paste_audio_onto_video (video_filename, audio_filename, timestamp
 
     -- Generate silence
     local silence_filename  =  TMP_FOLDER..'silence.mp3'
-    os.execute(('ffmpeg -y -f lavfi -i anullsrc=channel_layout=5.1:sample_rate=48000 -t %s %s &> /dev/null'):format(timestamp, silence_filename))
+    os.execute(('ffmpeg -loglevel panic -y -f lavfi -i anullsrc=channel_layout=5.1:sample_rate=48000 -t %s %s &> /dev/null'):format(timestamp, silence_filename))
 
     -- Paste audio onto video
     local output_filename  =  TMP_FOLDER..'output.webm'
-    local cmd  =  (('ffmpeg -y -i "%s" -i "concat:%s|%s" -filter_complex "[0:a:0][1:a:0]amerge=inputs=2[a]" -map 0:v:0 -map "[a]" -c:v copy -c:a libvorbis -ac 2 -shortest %s &> /dev/null'):format(video_filename, silence_filename, audio_filename, output_filename))
+    local cmd  =  (('ffmpeg -loglevel panic -y -i "%s" -i "concat:%s|%s" -filter_complex "[0:a:0][1:a:0]amerge=inputs=2[a]" -map 0:v:0 -map "[a]" -c:v copy -c:a libvorbis -ac 2 -shortest %s &> /dev/null'):format(video_filename, silence_filename, audio_filename, output_filename))
     os.execute(cmd)
 
     return output_filename
diff --git a/memes.lua b/memes.lua
index 10e6d5c..c26ecd3 100644
--- a/memes.lua
+++ b/memes.lua
@@ -38,7 +38,8 @@ end
 local function copy_remotely (origin_server, origin_path, target_server, target_path)
     local origin  =  origin_server and origin_server ~= 'localhost' and origin_server..':'..origin_path or origin_path
     local target  =  target_server and target_server ~= 'localhost' and target_server..':'..target_path or target_path
-    os.execute('scp '..origin..' '..target..' > /dev/null')
+    local status  =  os.execute('scp '..origin..' '..target..' &> /dev/null')
+    assert(status == 0)
 end
 
 local function save_file_to_dcav (filename)
@@ -230,7 +231,7 @@ local function paste_topic_onto_image (target, topic, x, y, w, h, bg_color, font
         -- Convert svg to png
         if url:match '%.svg$' then
             local filename_2 = CONFIG.IMGGEN_PATH_OUTPUT..'topic_'..topic.topic..'.'..'png'
-            os.execute('convert -density "1200" -resize 400x400 "'..filename..'" "'..filename_2..'"')
+            os.execute('convert -density "1200" -resize 400x400 "'..filename..'" "'..filename_2..'" &> /dev/null')
             filename = filename_2
         end
         --