# FFmpeg installed locally; replace input names with real project files.
# Review text legibility and motion before using these outputs.
ffmpeg -i input.mp4 -vf "scale=w='min(1280,iw)':h=-2" -c:v libx264 -crf 26 -preset medium -an -movflags +faststart signboard-720p.mp4
ffmpeg -ss 00:00:01 -i signboard-720p.mp4 -frames:v 1 -q:v 3 poster.jpg
# If speech is important, keep audio with: -c:a aac -b:a 96k instead of -an.