diff --git a/src/ks-avi b/src/ks-avi
index 383f782..4ca9adc 100755
--- a/src/ks-avi
+++ b/src/ks-avi
@@ -18,6 +18,9 @@ ksToolsTempFolder="/tmp/ks-tools"
 rel_size="720x480"
 vcodec="libxvid"
 b_vcodec="3000k"
+# Presets: ultrafast, superfast, veryfast, faster,
+#  fast, medium (default), slow, slower, veryslow
+v_preset="slow"
 acodec="libmp3lame"
 b_acodec="192k"
 default_lang_audio="spa"
@@ -131,7 +134,16 @@ fi
 p_ffmpeg="ffmpeg -i"
 p_ffmpeg_patched="-max_muxing_queue_size 9999"
 f_conversion="-vsync 1 -async 1"
-p_conversion="-s ${rel_size} -c:v ${vcodec} -b:v ${b_vcodec} -c:a ${acodec} -b:a ${b_acodec}"
+# Check if video input uses H265 (HEVC)
+codec_h265=$(${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Video:" | grep "h265")
+codec_hevc=$(${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Video:" | grep "hevc")
+yuv420p10le=$(${p_ffmpeg} "${1}" 2>&1 | grep Stream | tr -s " " | grep "Video:" | grep "yuv420p10le")
+codec_h265_hevc="${codec_h265}${codec_hevc}${yuv420p10le}"
+if [ -z "${codec_h265_hevc}" ] ; then
+	p_conversion="-s ${rel_size} -c:v ${vcodec} -b:v ${b_vcodec} -preset ${v_preset} -c:a ${acodec} -b:a ${b_acodec}"
+else
+	p_conversion="-s ${rel_size} -c:v ${vcodec} -pix_fmt yuv420p -b:v ${b_vcodec} -preset ${v_preset} -c:a ${acodec} -b:a ${b_acodec}"
+fi
 
 # Init conversion file
 current_date=$(date +%Y)
@@ -146,6 +158,7 @@ if [ -z "${2}" ] ; then
   echo " - Resolution: ${rel_size}"
   echo " - Video codec: ${vcodec}"
   echo " - Bitrate video: ${b_vcodec}"
+	echo " - Preset: ${v_preset}"
   echo " - Audio codec: ${acodec} (stereo)"
   echo " - Bitrate audio: ${b_acodec}"
   echo " - Default Audio: ${default_lang_audio}"
@@ -267,7 +280,11 @@ else
     resolution="${rel_size}"
   else
     rel_size="${resolution}"
-    p_conversion="-s ${rel_size} -c:v ${vcodec} -b:v ${b_vcodec} -c:a ${acodec} -b:a ${b_acodec}"
+    if [ -z "${codec_h265_hevc}" ] ; then
+			p_conversion="-s ${rel_size} -c:v ${vcodec} -b:v ${b_vcodec} -preset ${v_preset} -c:a ${acodec} -b:a ${b_acodec}"
+		else
+			p_conversion="-s ${rel_size} -c:v ${vcodec} -pix_fmt yuv420p -b:v ${b_vcodec} -preset ${v_preset} -c:a ${acodec} -b:a ${b_acodec}"
+		fi
   fi
   echo -n "* (Default: n) Do you want apply '-max_muxing_queue_size 9999' patch? (y/n): " ; read patch_thread
   if [ "${patch_thread}" == "y" ] ; then