This is not open source. It is weights-available.

Also, there is no training data, which would be the "preferred form" of modification.

From their license: [1]

  If, on the Tencent HunyuanWorld-Voyager version release date, the monthly active users of all products or services made available by or for Licensee is greater than 1 million monthly active users in the preceding calendar month, You must request a license from Tencent, which Tencent may grant to You in its sole discretion, and You are not authorized to exercise any of the rights under this Agreement unless or until Tencent otherwise expressly grants You such rights.

  You must not use the Tencent HunyuanWorld-Voyager Works or any Output or results of the Tencent HunyuanWorld-Voyager Works to improve any other AI model (other than Tencent HunyuanWorld-Voyager or Model Derivatives thereof).

As well as an acceptable use policy:

  Tencent endeavors to promote safe and fair use of its tools and features, including Tencent HunyuanWorld-Voyager. You agree not to use Tencent HunyuanWorld-Voyager or Model Derivatives:
  1. Outside the Territory;
  2. In any way that violates any applicable national, federal, state, local, international or any other law or regulation;
  3. To harm Yourself or others;
  4. To repurpose or distribute output from Tencent HunyuanWorld-Voyager or any Model Derivatives to harm Yourself or others; 
  5. To override or circumvent the safety guardrails and safeguards We have put in place;
  6. For the purpose of exploiting, harming or attempting to exploit or harm minors in any way;
  7. To generate or disseminate verifiably false information and/or content with the purpose of harming others or influencing elections;
  8. To generate or facilitate false online engagement, including fake reviews and other means of fake online engagement;
  9. To intentionally defame, disparage or otherwise harass others;
  10. To generate and/or disseminate malware (including ransomware) or any other content to be used for the purpose of harming electronic systems;
  11. To generate or disseminate personal identifiable information with the purpose of harming others;
  12. To generate or disseminate information (including images, code, posts, articles), and place the information in any public context (including –through the use of bot generated tweets), without expressly and conspicuously identifying that the information and/or content is machine generated;
  13. To impersonate another individual without consent, authorization, or legal right;
  14. To make high-stakes automated decisions in domains that affect an individual’s safety, rights or wellbeing (e.g., law enforcement, migration, medicine/health, management of critical infrastructure, safety components of products, essential services, credit, employment, housing, education, social scoring, or insurance);
  15. In a manner that violates or disrespects the social ethics and moral standards of other countries or regions;
  16. To perform, facilitate, threaten, incite, plan, promote or encourage violent extremism or terrorism;
  17. For any use intended to discriminate against or harm individuals or groups based on protected characteristics or categories, online or offline social behavior or known or predicted personal or personality characteristics;
  18. To intentionally exploit any of the vulnerabilities of a specific group of persons based on their age, social, physical or mental characteristics, in order to materially distort the behavior of a person pertaining to that group in a manner that causes or is likely to cause that person or another person physical or psychological harm;
  19. For military purposes;
  20. To engage in the unauthorized or unlicensed practice of any profession including, but not limited to, financial, legal, medical/health, or other professional practices.

[1] https://github.com/Tencent-Hunyuan/HunyuanWorld-Voyager/blob...

Voyager – An interactive video generation model with realtime 3D reconstruction