A script for checking if clips are VFR or not. Requires ffmpeg and ZSH to work.

vfr-info.sh

#!/bin/zsh
# set -euxo

# Text modifiers
RED='\033[0;31m'
GREEN='\033[0;32m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
YELLOW='\033[1;33m'
NC='\033[0m'
BOLD=$(tput bold)
REGULAR=$(tput sgr0)

# Make directory for today
today=`date +%d%m%y`
mkdir -p /tmp/vfr-info/$today

# Totals
vfr_clips=0
cfr_clips=0
vfr_clip_names=""
cfr_clip_names=""
output_log=""
total_clips=0

check_clip () {
    echo "${NC}${BOLD}Checking ${YELLOW}$1${NC}...${REGULAR}"
    timestamp=`date +%s`
    tmp_filename="${timestamp}_${1%.*}"
    tmp=/tmp/vfr-info/$today/$tmp_filename
    total_clips=$((total_clips+1))
    sleep 1
    ffmpeg -i $1 -vf vfrdet -an -f null - 2>&1 | >> $tmp
    item=`cat $tmp | grep Parsed | cut -d "]" -f 2`

    vfr_frames=`cat $tmp | grep Parsed | cut -d "]" -f 2 | cut -d "(" -f 2 | cut -d "/" -f 1`
    cfr_frames=`cat $tmp | grep Parsed | cut -d "]" -f 2 | cut -d "(" -f 2 | cut -d "/" -f 2 | cut -d ")" -f 1`
    max_delay=`cat $tmp | grep Parsed | cut -d " " -f 11`
    all_frames=$vfr_frames+$cfr_frames

    # Other metadata
    fps=`cat $tmp | grep sensorFPS | cut -d ":" -f 2 | head -n 1`

    if [ -z "$fps" ]; then
        fps=""
    else
        fps=" ${BLUE}fps:${fps}"
    fi

    # Check if clip is VFR or CFR
    if [ $vfr_frames = "0" ]; then
            # Clip is CFR
            cfr_clips=$((cfr_clips+1))

            if [[ $cfr_clip_names == "" ]]; then
                cfr_clip_names+="$1"
            else    
                cfr_clip_names+=", $1"
            fi

            echo ${GREEN}$1\(${YELLOW}$((all_frames))${GREEN}\):${NC}$item"\n${REGULAR}"

            # Log clip
            output_log+="$1($((all_frames))):$item\n"
        else
            # Clip is VFR
            vfr_clips=$((vfr_clips+1))

            if [[ $vfr_clip_names == "" ]]; then
                vfr_clip_names+="$1"
            else    
                vfr_clip_names+=", $1"
            fi

            echo ${RED}$1\(${YELLOW}$((all_frames))${RED}\):${NC}$item ${CYAN}${BOLD}"Estimated desync: $((max_delay*vfr_frames))ms\n${REGULAR}"

            # Log clip
            output_log+="$1($((all_frames))):}$item Estimated desync: $((max_delay*vfr_frames))ms\n"
    fi
}

# Run script
if [ $# -eq 0 ]; then
    # echo "Getting VFR info for all files in current directory..."

    setopt CSH_NULL_GLOB

    # Loop through all clips in current directory
    for i in *.mov *.mp4 *.MOV *.MP4; 
        do 
        check_clip $i
    done 
else 
    # echo "Getting VFR info for ${YELLOW}$1"
    check_clip $1 "no"
fi

echo "${GREEN}${BOLD}Total CFR clips: ${REGULAR}${cfr_clips}/${total_clips} (${cfr_clip_names})"
echo "${RED}${BOLD}Total VFR clips: ${REGULAR}${vfr_clips}/${total_clips} (${vfr_clip_names})" 
[ -e vfr-info.log ] && rm vfr-info.log
echo $output_log >> vfr-info.log