marketing-demo

Plan a shot list of key screens, capture each with ply screenshots, then stitch them into an MP4 with ffmpeg at 1280x800. For branded output with transitions and text overlays, use the Remotion mode instead.

Use ffmpeg with -framerate 0.5 on sequentially named screenshots and libx264 encoding to produce an MP4. The skill includes commands for scaling, padding, GIF conversion, and square social crops.

Use ply plus ffmpeg for quick, rough demos stitched from screenshots. Use Remotion when you need polished marketing output with branded intros, animated text overlays, transitions, and CTA outros.

Email GIFs should be 600px wide, 3-8 seconds long, and under 2MB. The skill generates them with an ffmpeg palette-optimized filter chain to keep file size small while preserving quality.

Remotion render failures usually come from Node versions below 18, GPU issues, or missing image paths. Try --gl=angle or --gl=swangle flags and verify all Img src paths exist before rendering.

Shot duration depends on demo type: 0.5-1s for quick overviews, 2-3s for feature demos, 4-5s for walkthroughs, and 1-2s for social clips. Keep total demos under 60 seconds unless adding chapter breaks.