diff --git a/files/process_motion_event.sh b/files/process_motion_event.sh
index a5fb288..9b344c5 100644
--- a/files/process_motion_event.sh
+++ b/files/process_motion_event.sh
@@ -198,7 +198,7 @@ done
 if [ -n "${file}" ]; then
   file_uri=$(echo "${file}" | sed 's|/srv/expendable_data|https://ficheros.koti.site|g')
   data="${data}, \"file_uri\": \"${file_uri}\""
-  temp_file="$(mktemp /tmp/tmp.XXXXX.mkv)"
+  temp_file="$(mktemp /tmp/tmp.XXXXX.mp4)"
   result=$(/usr/bin/ffmpeg -y -filter_complex '[0:v] fps=12,scale=480:-1,split [a][b];[a] palettegen [p];[b][p] paletteuse'  -i "${file}" "${temp_file}" 2>&1)
   return_code=$?
   if [ ${return_code} != 0 ]; then