steghide extract -sf book_cover.jpg -p "RhysMontrose" openssl enc -d -aes-256-cbc -in small.enc -out revealed.mp4 -k "Marienne" FFmpeg is legal. Using it to manipulate real surveillance footage without consent or for stalking (like Joe) is not. This guide is purely for fictional recreation or educational purposes.
# Step 1: shrink video ffmpeg -i library_original.mp4 -vf scale=640:-1 -c:a aac small.mp4 openssl enc -aes-256-cbc -salt -in small.mp4 -out small.enc -k "Marienne" Step 3: hide in book cover image steghide embed -cf book_cover.jpg -ef small.enc -p "RhysMontrose" Step 4: verify steghide info book_cover.jpg you s04e02 ffmpeg
To recover:
ffmpeg -i secret.mp4 -c copy -encryption_scheme cenc -encryption_key 12345678901234567890123456789012 encrypted.h264 Then embed in PNG (requires steghide ): steghide extract -sf book_cover