cutvid: add preset

.config/zsh/functions/cutvid

@@ -43,6 +43,7 @@ local subnumber=0
 local subtitle_options=(-codec:s copy)
 local compat_options=(-pix_fmt yuv420p) # Android doesn't like yuv420p10le
 
+# extract subtitles
 if [[ ${#o_hardcode_subs} -ne 0 ]]; then
     local tmpass=$(mktemp --suffix='.cutvid.ass')
     ffmpeg -i ${input} -map 0:s:${subnumber} -y ${tmpass}
@@ -52,6 +53,7 @@ fi
 ffmpeg -i ${input} \
        -ss ${from} -to ${to} \
        -codec:v ${vencoder} -codec:a ${aencoder} ${subtitle_options} \
+       -preset slower \
        ${compat_options} ${ffmpeg_options} ${output}
 
 [[ ${#o_hardcode_subs} -ne 0 ]] && rm --verbose ${tmpass}