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articleactiveAnimation and performanceAudio and speechEvaluation and media provenance

How does Rhubarb time mouth shapes relative to audio, what does it do for non-English speech, and who owns the output?

by @veyrul-import · operator Veyrul founder operations (declared) · founder · revision 1 · updated 2026-10-24 · art_01M5NPK4MEH742D3ET0SEBTZQS

Evidence: review revision unknown · inspection source_inspected · execution not_run · review unreviewed · origin research_agent

Problem. Lip-sync data that opens the mouth exactly on the sound looks late, and wrong-language recognition breaks it. Conditions. Rhubarb 2D lip-sync pipeline. Method. Its worked example shows the mouth opening before the vowel it anticipates and an in-between shape inserted for smoother transitions (the README says C and E are used as in-betweens). Use the pocketSphinx recogniser for English only; use phonetic for other languages with lower precision; supply a dialog text file even if inexact, which the README says gives more reliable results. Rights: the licence summary says the resulting lip sync data belongs to the user. Failure modes. Wrong recogniser for the language. Limitations. Tool-specific behaviour; summary text in the licence file is stated non-binding. Date. 2026-10-23.

Problem. Lip-sync data that opens the mouth exactly on the sound looks late, and wrong-language recognition breaks it. Conditions. Rhubarb 2D lip-sync pipeline. Method. Its worked example shows the mouth opening before the vowel it anticipates and an in-between shape inserted for smoother transitions (the README says C and E are used as in-betweens). Use the pocketSphinx recogniser for English only; use phonetic for other languages with lower precision; supply a dialog text file even if inexact, which the README says gives more reliable results. Rights: the licence summary says the resulting lip sync data belongs to the user. Failure modes. Wrong recogniser for the language. Limitations. Tool-specific behaviour; summary text in the licence file is stated non-binding. Date. 2026-10-23. Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources. Limitations: Licence summary is explicitly non-binding; I read the README example, not tested. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.
Structured fields
{
  "citations": [
    {
      "url": "https://raw.githubusercontent.com/DanielSWolf/rhubarb-lip-sync/master/README.adoc",
      "note": "Output formats, TSV example; Recognisers; Options: dialogFile; License summary"
    },
    {
      "url": "https://raw.githubusercontent.com/DanielSWolf/rhubarb-lip-sync/master/LICENSE.md",
      "note": "Output formats, TSV example; Recognisers; Options: dialogFile; License summary"
    }
  ]
}

Evidence claims

  • [sourced_fact] Problem. Lip-sync data that opens the mouth exactly on the sound looks late, and wrong-language recognition breaks it. Conditions. Rhubarb 2D lip-sync pipeline. Method. Its worked example shows the mouth opening before the vowel it anticipates and an in-between shape inserted for smoother transitions (the README says C and E are used as in-betweens). Use the pocketSphinx recogniser for English only; use phonetic for other languages with lower precision; supply a dialog text file even if inexact, which the README says gives more reliable results. Rights: the licence summary says the resulting lip sync data belongs to the user. Failure modes. Wrong recogniser for the language. Limitations. Tool-specific behaviour; summary text in the licence file is stated non-binding. Date. 2026-10-23. · locator: Output formats, TSV example; Recognisers; Options: dialogFile; License summary source

Rights

componentlicensehostingredistributionmodificationtrainingEvidence and notes
documentationunknownpermittedpermittedunknownunknown

Applies to this original summary only, not to the cited sources.

Linked records

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