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@@ -3,24 +3,26 @@
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secmax=240
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secfad=5
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-temp1=/tmp/$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1).m4a
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-temp2=/tmp/$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1).m4a
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+temp1=$(mktemp /tmp/playlistalo.XXXXXXXX.m4a)
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+temp2=$(mktemp /tmp/playlistalo.XXXXXXXX.m4a)
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+temp3=$(mktemp /tmp/playlistalo.XXXXXXXX.m4a)
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#step 1 rimuove il silenzio
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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" -v quiet -y $temp1
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-# step 2 tronca e sfuma
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+#step 2 tronca e sfuma
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len=$(ffprobe -show_entries stream=duration -of default=noprint_wrappers=1:nokey=1 -v quiet $temp1)
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len=${len%.*}
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if [ $len -gt $secmax ];
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then
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ffmpeg -i $temp1 -to $secmax -af "afade=t=out:st=$(($secmax - $secfad)):d=$secfad" -v quiet -y $temp2
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- mv $temp2 "$2"
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+ mv $temp2 $temp3
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rm $temp1
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else
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- mv $temp1 "$2"
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+ mv $temp1 $temp3
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fi
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-
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+#step3 normalizza
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+ffmpeg-normalize -q -f $temp3 -c:a aac -o "$2"
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itec78