Hip Hip — fictional birthday demo, 11 September 2026

Max, Mia, Lily and Sophie are fictional sample characters. No customer data was used.
Licensed birthday stock photography by Vlada Karpovich / Pexels. No endorsement by the pictured people is implied.
One child's portrait is used in two crops for continuity; the cake detail is from the photographer's birthday collection.
Portrait: https://www.pexels.com/photo/little-girl-holding-birthday-cake-while-sitting-on-cabinet-7100282/
Cake: https://www.pexels.com/photo/birthday-cake-on-the-table-7099977/
Licence: https://www.pexels.com/license/
Names and spoken messages are fictional; they do not identify the pictured people.
Three synthetic spoken messages generated locally using Piper TTS and the en_US-ljspeech-high voice. These are test performances, not real contributions or imitations of the named characters.
Voice model source and model card: https://huggingface.co/rhasspy/piper-voices/tree/main/en/en_US/ljspeech/high
Training dataset: LJ Speech (public domain), https://keithito.com/LJ-Speech-Dataset/
Piper engine: https://github.com/OHF-Voice/piper1-gpl (local generation only; no engine or model is distributed with this site).
Soundtrack: Happy Birthday to You (90s TV Theme) by Tom Kincaid / VOLE.wtf.
Creator's CC0 release: https://vole.wtf/happy-birthday/
Licence: https://creativecommons.org/publicdomain/zero/1.0/
Six CC0 birthday arrangements are available in the editor; see /music/CREDITS.txt.
Lettering: Fredoka, Lilita One and Caveat, distributed under the SIL Open Font License. Licence files are included in /fonts/.

The finished MP4 uses the same scene plan, image framing, text, captions and transitions as the live Hip Hip renderer. It is pre-rendered for immediate playback using H.264/AAC; the browser remix exports MP4 or WebM depending on browser support. Individual sample files can be downloaded for testing uploads.

Contributor profile portraits (Mia, Lily and Sophie) are generated fictional adults.
Created for this demo using OpenAI image generation, 11 September 2026.
The film's soundtrack is Happy Birthday mixtape: ten Tom Kincaid / VOLE CC0
birthday recordings, each used once, loudness balanced and crossfaded.
The soundtrack is trimmed to the film and ducked beneath speech. See /music/CREDITS.txt.