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Victor Riparbelli

Victor Riparbelli (born 1991) is a Danish entrepreneur who in 2017 co-founded the AI video company Synthesia in London with Steffen Tjerrild, Matthias NiessnerMatthias NiessnerMatthias Niessner (Matthias Nießner, born 1986) is a professor of computer science at the Technical University of Munich in Germany and head of its Visual Computing Lab, known for the real-time facial reenactment system Face2Face and 3D reconstruction research such as ScanNet; he is a co-founder of the AI video company Synthesia and in 2024 co-founded the 3D world-model company SpAItial.Open the full entry and Lourdes Agapito and became its chief executive; he led the company from AI dubbing for film and advertising to corporate training video, and Synthesia’s valuation reached $4 billion in early 2026.

Contents24 sections
Key facts

Birth

Victor Riparbelli was born in September 1991; his name as registered with the UK’s Companies House is Victor Riparbelli Rasmussen, and he is a Danish national.⁠[1]

He grew up in Copenhagen as the eldest of three brothers; his mother was a journalist who later became chief executive of a Danish lifestyle-media company, and his father ran traditional, non-tech businesses.⁠[2]

Teenage Ventures

As a teenager he sold World of Warcraft accounts and built websites and online stores for local businesses.⁠[2]

By his own account he always wanted to be a musician, and he still produces electronic music in his spare time.⁠[3]

University

He studied for a joint honours degree in computer science and business at the IT University of Copenhagen, spending a semester at Stanford UniversityStanford UniversityStanford University is a research university in California founded by Leland and Jane Stanford in 1885 and opened in 1891.Open the full entry as part of it.⁠[3]

Moves to London

Rather than join a big tech company, he moved to London, where he first worked as a virtual reality consultant.⁠[3]

On August 10, 2016, he became a director of the UK company Immersive Futures Limited, which was later dissolved.⁠[4]

Meets Niessner

After a year of exploring VR, AR and AI startup ideas, he met Matthias Niessner and was captivated by Niessner’s research on AI video generation at Stanford University.⁠[5]

Founds Synthesia

Synthesia Limited was incorporated in England on August 25, 2017, registered for software development.⁠[6]

Riparbelli and Steffen Tjerrild-Hansen have been directors since that day; Lourdes Agapito became a director the same day and resigned on April 3, 2019.⁠[7]

He co-founded Synthesia with Matthias Niessner, Lourdes Agapito and Steffen Tjerrild and became its chief executive.⁠[8]

Early Business

Riparbelli recalled that for about three years the company provided AI translation and dubbing to film studios and ad agencies, a “mildly successful” business that was hard to scale: a 30-second clip took two PhDs about 10 days.⁠[10]

Beckham Campaign

Synthesia worked with Malaria No More, RG/A and Ridley Scott Associates on a synthetic video of David Beckham speaking nine languages to campaign against malaria; it won a CogX award for outstanding achievement in social good use of AI in 2019.⁠[11]

Seed Round

He recalled that after a first raise of about $1 million the company struggled to raise again, eventually securing a smaller $3 million that funded its first real product iteration, launched in 2020.⁠[2]

Seedcamp began backing the team of Riparbelli and Steffen Tjerrild in 2019, when the company had about 10 employees.⁠[12]

Turn to Corporate Training

Around 2021, inbound enterprise interest led Synthesia to refocus on training and onboarding videos.⁠[10]

Series A

On April 21, 2021, Synthesia announced a $12.5 million Series A led by Matt Turck of FirstMark Capital.⁠[13]

Series B

In December 2021 Synthesia closed a $50 million Series B led by Kleiner Perkins, with GV among the participants. Riparbelli said the platform’s power users were not video teams but other departments.⁠[14]

Series C

On June 2, 2023, Accel’s Philippe Botteri became a director of Synthesia Limited.⁠[7]

Riparbelli said: “We’ve made great strides toward our vision to make video easy for everyone, but there’s still a long way to go.”⁠[17]

Responsible Practices

He argued for regulation focused on “intent” rather than specific algorithms, and said companies should prevent misuse through content moderation and identity verification.⁠[19]

Series D

In January 2025 Synthesia raised a $180 million Series D at a $2.1 billion valuation, with investors including NEA, WiL and Atlassian Ventures, bringing total funding to more than $330 million.⁠[20]

The company then had 400 employees and six offices, in London, New York City, Copenhagen, Amsterdam, Zurich and Munich.⁠[21]

ARR Passes $100 Million

On April 15, 2025, Synthesia announced annual recurring revenue above $100 million and a strategic investment from Adobe Ventures. Riparbelli said the team aimed to build a “generational software business.”⁠[22]

On EU Regulation

In 2025 he criticized EU AI regulation, saying: “I’m not a Brexiteer, but if we look back in 10 or 15 years, it might turn out to have saved the UK economy.” He added: “I could have moved my company to the US so many times.”⁠[23]

Synthesia 3.0

On October 1, 2025, he announced Synthesia 3.0, calling it “an entirely new media format,” with features including Video Agents that hold real-time conversations and Express-2 full-body avatars.⁠[24]

Adobe Acquisition Talks

In October 2025, media reports stated that Synthesia had held talks with Adobe about an acquisition for about $3 billion without reaching a deal and had rejected the offer; the company declined to comment.⁠[25]

The same month, other reports stated that Synthesia had raised $200 million at a $4 billion valuation, which Synthesia did not confirm at the time.⁠[26]

Series E

On January 26, 2026, Synthesia announced a $200 million Series E at a $4 billion valuation, led by GV, with Evantic and Hedosophia as new investors.⁠[27]

Alongside the round, it arranged an employee secondary sale through Nasdaq, which acted only as a private-markets facilitator; the company did not go public. Riparbelli said: “This funding round is about scaling that vision.”⁠[28]

UK Memorandum

On June 8, 2026, during London Tech Week, Riparbelli and UK AI minister Kanishka Narayan signed a memorandum of understanding between Synthesia and the Department for Science, Innovation and Technology supporting the aim to upskill 10 million UK workers by 2030.⁠[29]

G7 Lunch

In June 2026 he attended an AI lunch during the G7 summit in Évian, France, saying “Most businesses don’t buy models,” and pledged that by 2030 Synthesia would put interactive AI video training tools in the hands of 75 million workers.⁠[30]

Related Organizations, Websites, and Public Accounts

Sources

  1. Victor Riparbelli RASMUSSEN personal appointments - Find and update company information - GOV.UK (opens in a new window)
  2. Forget PowerPoint; the Future of Business Explainers is Like a Video Game (opens in a new window)
  3. Synthesia CEO Victor Riparbelli: 'I'm very good at slapping stuff together' (opens in a new window)
  4. Victor RIPARBELLI RASMUSSEN personal appointments - Find and update company information - GOV.UK (opens in a new window)
  5. Synthesia's Victor Riparbelli on creating an environment to harness AI benefits and reduce harms (opens in a new window)
  6. SYNTHESIA LIMITED overview - Find and update company information - GOV.UK (opens in a new window)
  7. SYNTHESIA LIMITED people - Find and update company information - GOV.UK (opens in a new window)
  8. Victor Riparbelli | SXSW London 2025 Speakers (opens in a new window)
  9. The startup behind that deep-fake David Beckham video just raised $3M (opens in a new window)
  10. Victor Riparbelli: Bringing AI Video to the Fortune 100 (opens in a new window)
  11. How we made David Beckham speak 9 languages (opens in a new window)
  12. Synthesia raises $200M Series E at $4B valuation to drive the next era of video creation (opens in a new window)
  13. Synthesia announces $12.5M Series A to replace cameras with code, and scale their AI video generation platform. (opens in a new window)
  14. Synthesia raises $50M to leverage synthetic avatars for corporate training and more (opens in a new window)
  15. MMC backs Synthesia again in $50 million funding round (opens in a new window)
  16. UK's Synthesia raises $90 million valuing the AI video creation platform at $1 billion (opens in a new window)
  17. Synthetic Media AI Startup Synthesia Raises $90M (opens in a new window)
  18. Launching a new framework for Responsible Practices for Synthetic media with the Partnership on AI (opens in a new window)
  19. On Regulation of Synthetic Media (opens in a new window)
  20. Synthesia Secures $180M in Series D Funding (opens in a new window)
  21. AI video unicorn Synthesia closes $180 million Series D (opens in a new window)
  22. Synthesia surpasses $100 million in annual recurring revenue and secures strategic investment from Adobe Ventures (opens in a new window)
  23. Synthesia CEO says 'stupid' EU tech laws vindicate Brexit (opens in a new window)
  24. With Synthesia 3.0, the next era of video is here (opens in a new window)
  25. Synthesia rejects $3bn Adobe acquisition offer (opens in a new window)
  26. AI video startup Synthesia reportedly raises $200M at $4B valuation (opens in a new window)
  27. Synthesia raises $200 million Series E at $4 billion valuation (opens in a new window)
  28. Synthesia Hits $4B Valuation in Series E, Adds Nasdaq-Backed Employee Liquidity (opens in a new window)
  29. Synthesia and the UK Government sign Memorandum of Understanding (MoU) to advance AI adoption and upskilling across the UK (opens in a new window)
  30. Victor Riparbelli attends G7 AI lunch in Évian (opens in a new window)
  31. About Synthesia (opens in a new window)