Can a prompt replace Sendspark?

Build a personalised video landing-page generator. It produces links; it never sends anything.

Recording: capture screen, camera, or both with the camera as a corner overlay, using the browser's own capture APIs with an explicit permission prompt and a visible recording indicator. Save locally as WebM and transcode to MP4 with ffmpeg.

Recipients: import a CSV with columns for name, company, email and an optional website URL. Validate the file and show a per-row preview before anything is generated. Cap the batch at a modest number, defaulting to 50, and require an explicit acknowledgement to raise it — see the note on scope below.

Personalised opening frame, which is the mechanic. For each recipient, generate a still frame composited from: the video's own first frame, the recipient's name and company rendered in a chosen style, and optionally a screenshot of their website captured by a headless browser. The generated frame becomes the video's poster image and its first second, so the thumbnail in an email reads as made for that person. Cache website screenshots by domain, respect robots.txt, and skip a site that refuses rather than retrying.

Landing page per recipient: a static page at an unguessable URL with the video, a heading using their name, a short message with template variables filled from their row, and one call-to-action button the sender configures. Pages are static files, so serving a hundred of them costs nothing.

Output: a CSV back, with the original rows plus each recipient's page URL and poster image path, ready for the sender to use in whatever they already send email with.

Analytics, kept minimal and honest: count page opens and video plays per recipient, storing only a count and a first-seen timestamp. Do not store IP addresses, user agents, or approximate locations, and do not notify in real time. The point is knowing whether a message landed, not watching someone.

Scope guardrails, stated in the README and enforced in the build: this tool does not send email, does not hold a mailing list, does not import contacts from anywhere, and does not integrate with an email platform. It generates assets for messages a person sends deliberately, one at a time or in a small batch. Bulk personalised video is one small step from bulk unsolicited email, and the batch cap and the absence of a sender are the design saying so.

Out of scope: sending email, CRM integration, sequences or follow-ups, a hosted service, and any contact enrichment or discovery.