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14 lines
450 B
14 lines
450 B
#!/bin/bash
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if [ ${#} -ne "2" ] ; then
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echo "Usage: ${0} <input file> <output file>"
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exit 1
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fi
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TMPFILE="convert.tmp"
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ffmpeg -i "${1}" -f u16be -ar 16k -ac 1 -acodec pcm_u16be ${TMPFILE}
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SIZE=$(( $(stat -c "%s" ${TMPFILE} ) / 2 ))
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echo -ne "\0$(printf %o $(($SIZE % 256)) )\0$(printf %o $(( ($SIZE / 256) % 256)) )\0$(printf %o $(( ($SIZE / 256**2) % 256)) )\0$(printf %o $(( ($SIZE / 256**3) % 256)) )" | cat - ${TMPFILE} > "${2}"
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rm ${TMPFILE}
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