Extract WWDC Titles from session videos

extract_titles.sh

#!/bin/zsh

# Folder path containing the videos
folder_path="/Volumes/Alessaba/WWDC/2025"
timestamp_titolo='00:00:02'

# Extract frame from video
extract_frame() {
    local video_path=$1
    local image_path=$2
    ffmpeg -ss $timestamp_titolo -i "$video_path" -frames:v 1 -q:v 2 "$image_path" > /dev/null 
}

# Perform OCR and extract title
perform_ocr_and_extract_title() {
    local image_path=$1
    local text=$(tesseract "$image_path" stdout)
    local title=$(echo "$text" | head -4 | tail -2) # Verificare che l'OCR corrisponda. Nel 2024 era la 4a riga
    echo "$title"
}

# Process each video in the folder
for video_file in "$folder_path"/*.mp4; do
    if [[ -f "$video_file" ]]; then
        image_path="${video_file%.*}.png"
        extract_frame "$video_file" "$image_path"
        title=$(perform_ocr_and_extract_title "$image_path")
        if [[ -n "$title" ]]; then
            new_video_path="${folder_path}/${title}.mp4"
            mv "$video_file" "$new_video_path"
        fi
        rm "$image_path"
    fi
done