Y Combinator · Launch Video Breakdown: Hook, Pacing & Motion Design

Scene-by-scene timeline & spoken transcript

1. 0:00 – 0:06

   Problem Agitation

   The Pain of Video Editing

   “If you've got hours or days of footage, you're spending 90% of your time just dragging them around. I had a friend who spent 100 hours editing a video that was only 10 minutes long.”

   On screen

   you've got hours or in your head. you're spending 90% dragging them around. had a friend

   Camera

   Medium close-up on the founder, then a close-up on an SD card being inserted, followed by a series of close-ups on the founder's face, conveying frustration and thought.

   Motion

   Quick cuts between founder and relevant objects (SD card) to establish the problem. Subtle camera shakes and zooms on the founder's face to emphasize emotion.

2. 0:06 – 0:17

   Product Reveal

   Introducing Cardboard: AI Video Editor

   “Introducing Cardboard, an AI video editor. You upload your raw footage and edit it with AI. Cardboard analyzes your voiceover to understand the narrative structure and get word-level timestamps. You can search your footage by description. You can generate a 60-second vlog. You can even generate original soundtracks.”

   On screen

   What are we editing today, Ishan? Bring in your media and let's get started. Ask Cardboard to create an explainer video with a voiceover that Drag and drop or click here to add your images, videos or audio. or choose from one of these examples Ishan Montage SF Vlog Explainer 6 videos, 6 images introducing cardboard. Now let me analyze the voiceover to understand the narrative structure and get word-level timestamps: Searching content What story do you want to tell? I'll help you create montages, reels, and more... Claude Sonnet 4.5 an ai video editor Media Library Manage and search your project assets q bench pre + Add IMG_0227.mov IMG_0230.mov IMG_0231.mov IMG_0232.mov 00:00:00.000 2s 4s 6s 8s 10s 12s 14s 16s 18s Drop media here to get started footage by description We're all set Upload 16:9 Export Director + Create a 1 minute instagram vlog reel that talks about a day in my life in New York City Planning next steps... a 60 second vlog. Edit videos with AI. Pick a prompt or type below. Voiceover instagram reel can you change the music? i dont like this one? maybe something rock and coo Claude Sonnet 4.5 the music OUT Planning next steps... that actually

   Camera

   Dynamic screen capture with rapid zooms and pans across the UI, simulating user interaction. Occasional quick cuts to the founder reacting to the AI's output.

   Motion

   Fast-paced UI animations, text input simulations, and rapid content generation visualizations. The sub-bass drops and synth sweeps punctuate key feature reveals, creating a sense of impact and speed.

3. 0:17 – 0:18

   Feature Teaser

   Seamless Export & Founder Reaction

   “(No spoken dialogue — A significant sub-bass drop/impact followed by a synth riser creates a moment of high energy and anticipation.)”

   On screen

   Export VIDEO RESOLUTION 1080p 1920 1080 ADVANCED SETTINGS EXPORT VIDEO

   Camera

   Quick cut back to the founder, then a close-up on the export screen with a subtle glitch effect.

   Motion

   A brief, impactful glitch transition on the export screen, followed by a quick cut to the founder, emphasizing the speed and ease of the final step. The audio transition reinforces this impact.

4. 0:18 – 0:55

   Call to Action

   Cardboard: Made with AI

   “(No spoken dialogue — The music features a driving electronic beat with a prominent sub-bass, pizzicato synths, and subtle orchestral synth pads. A final energetic build-up with a sub-bass drop and synth sweep at [0:47] leads to the brand reveal.)”

   On screen

   Cardboard made with cardboard usecardboard.com

   Camera

   Static shot of the Cardboard logo, then a static shot of the website URL.

   Motion

   Clean, minimalist reveal of the brand logo and website. The logo animates with a subtle pulsing line effect, suggesting AI processing. The final sub-bass drop and synth sweep provide a strong, memorable conclusion.