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- #!/usr/bin/env zsh
- if [[ $1 -eq 0 ]] || ! [[ -f $2 ]]; then
- echo "Usage: $0 limit_in_kb source_file"
- exit 1
- fi
- ((size_limit=$1*1024))
- mkvmerge --split timecodes:$(
- LANG=C mkvinfo -v -v $2 |
- awk -F'[ ,()]+' '
- !vtrack && /Track number:/ {t=$5}
- !vtrack && /Track type: video at/ {vtrack=t}
- $3!="SimpleBlock" || $4!="key" || $7!=vtrack {next}
- $16-split_pos > '$size_limit' {printf("%s%s", comma, prev_time); comma=","; split_pos=prev_pos}
- {prev_time=$14; prev_pos=$16}'
- # ffprobe медленней на порядок, да и хуита выходит — время не совпадает, режет по следующим кадрам
- # ffprobe -hide_banner -loglevel error $2 -show_frames -select_streams 0:v:0 -of csv |
- # awk -F, ' !$2 {next} $12-prev_pkt_pos>'$size_limit' { prev_pkt_pos=$12; printf("%s%d:%d:%f", comma, prev_kf/3600, prev_kf % 3600 / 60, prev_kf % 60); comma=","} {prev_kf=$9}'
- ) $2 -o "${2:t:r}-split.${2:e}"
- du ${2:t:r}-split*.${2:e}
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