Print group of pictures (GoP) structure of a video file

show-gops.sh

#!/bin/bash
# This script prints the gops structure of the video file in terms of frames between keyframes.
#
# Usage: $0 [--full] <video file>
#


full() {
  ffprobe -hide_banner -loglevel error -show_frames "$@" | \
    grep -oP 'pict_type=\K.' | \
    awk '/I/ {if(a)printf " (%d)\nI", a; a=1} /[PB]/ {a++; printf $0}'
}

simple() {
  ffprobe -hide_banner -loglevel error -show_frames "$@" | \
    grep -oP 'pict_type=\K.' | \
    awk '/I/ {if(a)print a; a=1} /[PB]/ {a++} END {print a}'
}

if [[ "$1" == "--full" ]]; then
  shift
  full "$@"
else
  simple "$@"
fi