mirror of
https://github.com/levogevo/ffmpeg-av1-builder.git
synced 2026-01-15 16:56:18 +00:00
46 lines
1.4 KiB
Bash
46 lines
1.4 KiB
Bash
#!/bin/bash
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get_duration() {
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ffmpeg -i "$1" 2>&1 | grep "Duration" | awk '{print $2}' | tr -d ,
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}
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INPUT="bebop.mkv"
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DURATION="$(get_duration "$INPUT")"
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TOTAL_SECONDS="$(echo "$DURATION" | awk -F: '{ print ($1 * 3600) + ($2 * 60) + $3 }')"
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echo "TOTAL_SECONDS: $TOTAL_SECONDS"
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# set number of segments and start times
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SEGMENTS=9
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SEGMENT_PERCENTAGE=$((100 / SEGMENTS))
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SEGMENT=$SEGMENT_PERCENTAGE
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START_TIMES=()
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while [[ $SEGMENT -lt 100 ]]
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do
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START_TIME="$(echo "$SEGMENT * $TOTAL_SECONDS / 100" | bc)"
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START_TIMES+=("$START_TIME")
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SEGMENT=$((SEGMENT + SEGMENT_PERCENTAGE))
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done
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# split up video into segments based on start times
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SEGMENT_TIME=1
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SEGMENT_DIR='./tmp/fg_segments'
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SEGMENTS_LIST="$SEGMENT_DIR/segments_list.txt"
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OUTPUT_CONCAT="$SEGMENT_DIR/concatenated.mkv"
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rm -rf "$SEGMENT_DIR"
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mkdir -p "$SEGMENT_DIR"
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for INDEX in "${!START_TIMES[@]}"
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do
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# don't concatenate the last segment
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if [[ $((INDEX + 1)) == "${#START_TIMES[@]}" ]]; then
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break
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fi
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START_TIME="${START_TIMES[$INDEX]}"
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OUTPUT_SEGMENT="$SEGMENT_DIR/segment_$INDEX.mkv"
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echo "START_TIME: $START_TIME"
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ffmpeg -ss "$START_TIME" -i "$INPUT" -hide_banner -loglevel error -t "$SEGMENT_TIME" -map 0:0 -c copy "$OUTPUT_SEGMENT"
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echo "file '$(basename "$OUTPUT_SEGMENT")'" >> "$SEGMENTS_LIST"
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done
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ffmpeg -f concat -safe 0 -i "$SEGMENTS_LIST" -hide_banner -loglevel error -c copy "$OUTPUT_CONCAT"
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