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Improved trimaudio

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itec 2020-04-04 16:56:23 +02:00
parent 03df912655
commit 1395f5c3bb
1 changed files with 14 additions and 3 deletions
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17
trimaudio.sh
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@ -6,10 +6,21 @@ secfad=5
temp1=/tmp/$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1).m4a
temp2=/tmp/$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1).m4a
#step 1 rimuove il silenzio
ffmpeg -i "$1" -to $(($secmax + 15)) -af "silenceremove=start_periods=1:start_duration=1:start_threshold=-60dB:detection=peak,aformat=dblp,areverse,silenceremove=start_periods=1:start_duration=1:start_threshold=-60dB:detection=peak,aformat=dblp,areverse" -y $temp1
ffmpeg -i $temp1 -to $secmax -af "afade=t=out:st=$(($secmax - $secfad)):d=$secfad" -y $temp2
mv $temp2 "$2"
rm $temp1
# step 2 tronca e sfuma
len=$(ffprobe -show_entries stream=duration -of default=noprint_wrappers=1:nokey=1 -v quiet $temp1)
len=${len%.*}
if [ $len -gt $secmax ];
then
ffmpeg -i $temp1 -to $secmax -af "afade=t=out:st=$(($secmax - $secfad)):d=$secfad" -y $temp2
mv $temp2 "$2"
rm $temp1
else
mv $temp1 "$2"
fi