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- #!/bin/bash
- function cropdetect ()
- {
- FFOUT=/tmp/ffout
- CROP="1"
- TOTAL_LOOPS="10"
- A=0
- while [ "$A" -lt "$TOTAL_LOOPS" ] ; do
- A="$(( $A + 1 ))"
- SKIP_SECS="$(( 120 * $A ))"
- ffmpeg -ss $SKIP_SECS -i "$@" -vframes 20 -an -sn -vf \
- cropdetect=30:2 -y /tmp/crop.mp4 2>$FFOUT
- CROP[$A]=$(grep -m 1 crop= $FFOUT |awk -F "=" '{print $2}')
- done
- B=0
- while [ "$B" -lt "$TOTAL_LOOPS" ] ; do
- B="$(( $B + 1 ))"
- C=0
- while [ "$C" -lt "$TOTAL_LOOPS" ] ; do
- C="$(( $C + 1 ))"
- if [ "${CROP[$B]}" == "${CROP[$C]}" ] ; then
- COUNT_CROP[$B]="$(( ${COUNT_CROP[$B]} + 1 ))"
- fi
- done
- done
- HIGHEST_COUNT=0
- D=0
- while [ "$D" -lt "$TOTAL_LOOPS" ] ; do
- D="$(( $D + 1 ))"
- if [ "${COUNT_CROP[$D]}" -gt "$HIGHEST_COUNT" ] ; then
- HIGHEST_COUNT="${COUNT_CROP[$D]}"
- GREATEST="$D"
- fi
- done
- rm /tmp/crop.mp4
- CROP="${CROP[$GREATEST]}"
- CROP=$(echo $CROP|awk -F ":" '{print $1-4":"$2-4":"$3+2":"$4+2}')
- echo $CROP
- rm $FFOUT
- }
- cropdetect "$@"
- exit 0
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