A script to capture frames from a QuickTime video

quicktime-video-capture.sh

#!/bin/zsh

# Check if the video filename is provided as an argument
if [ $# -eq 0 ]; then
    echo "Please provide the video filename as an argument."
    exit 1
fi

video_filename=$1

# Function to convert time in seconds to HH:MM:SS format
function seconds_to_hms {
    local total_seconds=$1
    local hours=$((total_seconds / 3600))
    local minutes=$(((total_seconds % 3600) / 60))
    local seconds=$((total_seconds % 60))
    printf "%02d:%02d:%02d\n" $hours $minutes $seconds
}

# Function to capture frame
function capture_frame {
    local current_time=$1
    local formatted_time=$(seconds_to_hms $current_time)
    local filename="/tmp/frame_${formatted_time//:/}.jpg"
    
    # Run ffmpeg to capture the frame
    ffmpeg -ss $formatted_time -i "$video_filename" -frames:v 1 $filename
    
    echo "Saved frame to $filename"
}

# Main loop
while true; do
    echo "Press any key to capture the current video frame..."
    read -sk 1 key

    # Use osascript to get the current time from QuickTime Player
    current_time=$(osascript -e 'tell application "QuickTime Player" to tell document 1 to get current time')

    # Capture the frame at the current time
    capture_frame $current_time
done