Credits and provenance

How the published examples and research records were made, what they demonstrate, and what they leave unknown.

Project credit policy

Every current media asset carries a credit under Renaissance Solutions publication policy. This project choice keeps authorship and production context visible; it does not claim that every provider legally requires attribution. Rights and license notes remain separate because a credit alone does not establish permission to reuse an asset.

Media

Clear voice — same excerpt

A synthetic voice reading the 21-second invitation excerpt. This is an illustrative style comparison, not the full experiment passage.

File: voice-a.mp3
Credit: Created for Renaissance Solutions with AI Doc Maker’s AI Voice Generator (Level 2 Labs), using a stock synthetic voice.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Terms or license: Open terms or license
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: AI Voice Generator connector; voice_id clear; underlying model not disclosed
Rights note: AI Doc Maker provider terms apply. No voice was cloned. The generation-time account plan was not retained; confirm applicable terms before reuse outside this project.
Checksum: 8d83720e1f873bfe5b64270a5c6eca42ae229b93fa913df722fca065d9a2d16a

Deep voice — same excerpt

A second synthetic voice reads the identical excerpt. Listen for pacing, emphasis, and fit to your audience.

File: voice-b.mp3
Credit: Created for Renaissance Solutions with AI Doc Maker’s AI Voice Generator (Level 2 Labs), using a stock synthetic voice.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Terms or license: Open terms or license
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: AI Voice Generator connector; voice_id deep; underlying model not disclosed
Rights note: AI Doc Maker provider terms apply. No voice was cloned. The generation-time account plan was not retained; confirm applicable terms before reuse outside this project.
Checksum: 68995684439b65c5d41f2bc65ece4b6f203526e7d3e6d6861e9d845a8841652d

Voice transcript and experiment passage

Exact excerpt transcript followed by a longer fictional repair-cafe passage with a pronunciation reference.

File: voice-transcript.txt
Credit: Written for Renaissance Solutions with Codex, September 17, 2026.
Credit policy: Required for this RS publication.
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: Codex authored text
Rights note: Project-authored text. No third-party quotation or stock asset is documented. Keep the project credit with copies.
Checksum: ed4899e9808813eb491f754174b8b5ca4bf3c2b5fc3372d3e13ade8b934110e3

From a description

Three adults gather around a brass lamp at a repair-cafe workbench. A blue mug is at left and a radio at right; warm textured illustration.

File: image-a.png
Credit: Created for Renaissance Solutions with OpenAI image generation in Codex.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Terms or license: Open terms or license
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: Built-in Image Gen; text-to-image; underlying model not disclosed
Rights note: Generated for this project without third-party reference images. Applicable OpenAI terms govern use; no exclusive rights or rights-clearance guarantee is claimed.
Checksum: 9774875aafe3fe232153911af553a20b8d211d6e028fe81051ae9e0dd874ce32

From a reference

The same repair-cafe arrangement reinterpreted with flatter cut-paper shapes. Faces, clothing details, and object shapes change.

File: image-b.png
Credit: Created for Renaissance Solutions with OpenAI image generation in Codex. Style variation from the project’s original repair-café illustration.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Terms or license: Open terms or license
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: Built-in Image Gen; reference-led style variation; input image-a
Rights note: Generated for this project without third-party reference images. Applicable OpenAI terms govern use; no exclusive rights or rights-clearance guarantee is claimed.
Checksum: 1f7e3846f498ac85090851f03933c936cdffe26c69e01a653626de518af29b2f

A targeted revision

The blue mug becomes terracotta red while the group, brass lamp, and radio remain in a similar arrangement. Small differences elsewhere remain possible.

File: image-revision.png
Credit: Created for Renaissance Solutions with OpenAI image generation in Codex. Targeted mug-color edit of the project’s original repair-café illustration.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Terms or license: Open terms or license
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: Built-in Image Gen; targeted edit; input image-a
Rights note: Generated for this project without third-party reference images. Applicable OpenAI terms govern use; no exclusive rights or rights-clearance guarantee is claimed.
Checksum: 4a4670928770195ec9b9b5b9d24c3e06bd196593b68557814c2c159a3632ef37

An edited still sequence

A silent 12-second invitation uses three held views of one illustration, with a detail cut at four seconds and return at eight seconds. Turn on captions or read the transcript.

File: video-a.mp4
Credit: Renaissance Solutions; source illustration created with OpenAI image generation in Codex. Video assembled locally with FFmpeg.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Terms or license: Open terms or license
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: FFmpeg local assembly of generated image-a; not a generative video model
Rights note: Uses the project’s generated image-a. Preserve its attribution and check applicable OpenAI terms; the video is a local edit, not a generative-video output.
Checksum: 7ad30e5f45d1c4855da0bf844869c1211f05dfa98761a9aa8a8d17311df27653

An animated still

A silent 12-second invitation uses a gradual centered zoom into the same illustration. The source characters do not move independently.

File: video-b.mp4
Credit: Renaissance Solutions; source illustration created with OpenAI image generation in Codex. Video assembled locally with FFmpeg.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Terms or license: Open terms or license
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: FFmpeg zoompan over generated image-a; not a generative video model
Rights note: Uses the project’s generated image-a. Preserve its attribution and check applicable OpenAI terms; the video is a local edit, not a generative-video output.
Checksum: 6c3381f2824fdc2dce41da15791aacf52e51ef50d1bcd7a726151de0ffb6a4ab

Repair-cafe video poster

The source illustration used in both video workflows.

File: video-poster.png
Credit: Renaissance Solutions; source illustration created with OpenAI image generation in Codex. Poster is an unmodified copy of the source illustration.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Terms or license: Open terms or license
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: Unmodified copy of image-a
Rights note: Uses the project’s generated image-a. Preserve its attribution and check applicable OpenAI terms; the video is a local edit, not a generative-video output.
Checksum: 9774875aafe3fe232153911af553a20b8d211d6e028fe81051ae9e0dd874ce32

Invitation captions

Three four-second cues: Bring one object. Explore what it needs. Learn together.

File: video-captions.vtt
Credit: Written for Renaissance Solutions with Codex, September 17, 2026.
Credit policy: Required for this RS publication.
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: Codex authored WebVTT
Rights note: Project-authored text. No third-party quotation or stock asset is documented. Keep the project credit with copies.
Checksum: 77b7c2bd1ce21c2e2a7d3d62de9769dd66fb33cde300643c55043a142d13560f

Video transcript and visual description

Caption text and descriptions of the two editing workflows.

File: video-transcript.txt
Credit: Written for Renaissance Solutions with Codex, September 17, 2026.
Credit policy: Required for this RS publication.
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: Codex authored text
Rights note: Project-authored text. No third-party quotation or stock asset is documented. Keep the project credit with copies.
Checksum: 6e53952673e02c051cfe806080a94383db2de878a0ddcbb2cd41bf530b560654

Make something worth hearing

A microphone and written passage on a workshop table, illustrated in warm printed textures.

File: voice-poster.png
Credit: Created for Renaissance Solutions with OpenAI image generation in Codex.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Terms or license: Open terms or license
Attribution note: Keep this credit with the asset under the Renaissance Solutions publication policy. This records project attribution, not a conclusion that every provider legally requires it.
Made with: Built-in Image Gen; text-to-image; underlying model not disclosed
Rights note: Generated for this project without third-party reference images. Applicable OpenAI terms govern use; no exclusive rights or rights-clearance guarantee is claimed.
Checksum: ed27e47eeaf8123a8e20a6c0e78accd7574ca3594c52cb14fa0fe286e13b5547

Wooden knocks — first attempt

Three knocks with a noisy, ringing quality. Retained to hear why the first attempt was revised.

File: knocks.wav
Credit: Created for Renaissance Solutions with Codex using local procedural synthesis; listening direction by Mike Besso.
Credit policy: Required for this RS publication.
Attribution note: RS publication credit policy. Review of the main cue does not imply a separate review of every isolated layer.
Made with: Python 3 standard library; deterministic procedural synthesis, not a generative audio service
Rights note: Project-authored synthesis with no third-party recording or cloned voice. Keep the project credit with copies.
Checksum: 9f8bc7c64ae32295312f1f3f097e4325ff9d54cdf01602fcb709af7ea0b055fe

Wooden knocks — revised take

Three shorter, duller knocks in the same rhythm; Mike preferred this take.

File: knocks-v2.wav
Credit: Created for Renaissance Solutions with Codex using local procedural synthesis; listening direction by Mike Besso.
Credit policy: Required for this RS publication.
Attribution note: RS publication credit policy. Review of the main cue does not imply a separate review of every isolated layer.
Made with: Python 3 standard library; deterministic procedural synthesis, not a generative audio service
Rights note: Project-authored synthesis with no third-party recording or cloned voice. Keep the project credit with copies.
Checksum: bf777a8650a341ebb5147e15567815c31c4e0af15e9bad800ff066c265a5dc84

Rain against a window — illustrative texture

Eight seconds of gently varying noise suggesting rain, designed as a repeatable ambience.

File: rain.wav
Credit: Created for Renaissance Solutions with Codex using local procedural synthesis; listening direction by Mike Besso.
Credit policy: Required for this RS publication.
Attribution note: RS publication credit policy. Review of the main cue does not imply a separate review of every isolated layer.
Made with: Python 3 standard library; deterministic procedural synthesis, not a generative audio service
Rights note: Project-authored synthesis with no third-party recording or cloned voice. Keep the project credit with copies.
Checksum: 16b3be998d09fbdab96c48ec52774b0576acce4c3469dbce51ffadf030ff9e69

Vintage radio powering on

A click, soft electrical wake-up and warm tone, suggesting an old-fashioned radio.

File: radio.wav
Credit: Created for Renaissance Solutions with Codex using local procedural synthesis; listening direction by Mike Besso.
Credit policy: Required for this RS publication.
Attribution note: RS publication credit policy. Review of the main cue does not imply a separate review of every isolated layer.
Made with: Python 3 standard library; deterministic procedural synthesis, not a generative audio service
Rights note: Project-authored synthesis with no third-party recording or cloned voice. Keep the project credit with copies.
Checksum: 775f0b1f9cee678efce0138749b372cf81703f6be873b765cc2e901216097957

Vintage radio — switch layer

The isolated switch click, positioned in the five-second cue.

File: radio-click.wav
Credit: Created for Renaissance Solutions with Codex using local procedural synthesis; listening direction by Mike Besso.
Credit policy: Required for this RS publication.
Attribution note: RS publication credit policy. Review of the main cue does not imply a separate review of every isolated layer.
Made with: Python 3 standard library; deterministic procedural synthesis, not a generative audio service
Rights note: Project-authored synthesis with no third-party recording or cloned voice. Keep the project credit with copies.
Checksum: fb0114cad37f78e1f8acb5baeb90f95da5bd0f12bd4429043634a6106aade292

Vintage radio — electrical layer

The isolated soft electrical wake-up, positioned in the five-second cue.

File: radio-wake.wav
Credit: Created for Renaissance Solutions with Codex using local procedural synthesis; listening direction by Mike Besso.
Credit policy: Required for this RS publication.
Attribution note: RS publication credit policy. Review of the main cue does not imply a separate review of every isolated layer.
Made with: Python 3 standard library; deterministic procedural synthesis, not a generative audio service
Rights note: Project-authored synthesis with no third-party recording or cloned voice. Keep the project credit with copies.
Checksum: 81a65e6c681f8cdc0bfd5d0edad0a76d558a2d47520bc63221a2f1855576d0d5

Vintage radio — tone layer

The isolated warm tone, positioned in the five-second cue.

File: radio-tone.wav
Credit: Created for Renaissance Solutions with Codex using local procedural synthesis; listening direction by Mike Besso.
Credit policy: Required for this RS publication.
Attribution note: RS publication credit policy. Review of the main cue does not imply a separate review of every isolated layer.
Made with: Python 3 standard library; deterministic procedural synthesis, not a generative audio service
Rights note: Project-authored synthesis with no third-party recording or cloned voice. Keep the project credit with copies.
Checksum: b062317e14143dfb7308fbba6186bea8bac6c40e3b94d590aa5df912672066da

First cut — the repairer

Six still pictures follow unequal passage timings, with about four seconds of final-picture hold.

File: first-cut.mp4
Credit: Story and direction: Renaissance Solutions. Artwork created with OpenAI; existing Speechify George narration and project-synthesized sound cues. See the retained credit record.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Attribution note: Original source hashes and revision are retained in source-manifest.json; no public-domain license asserted.
Made with: FFmpeg 8.1; existing approved Story Studio media
Rights note: RS lesson materials; retain attribution and confirm permissions for redistribution beyond the lesson.
Checksum: 058f3cec6259db2c62f89f6d32c54479773b572a8407bbae8ba5c34efe42c28d

Second cut — one later picture change

Picture two arrives one second later; narration, picture three and total duration stay in place.

File: revised.mp4
Credit: Story and direction: Renaissance Solutions. Artwork created with OpenAI; existing Speechify George narration and project-synthesized sound cues. See the retained credit record.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Attribution note: Original source hashes and revision are retained in source-manifest.json; no public-domain license asserted.
Made with: FFmpeg 8.1; existing approved Story Studio media
Rights note: RS lesson materials; retain attribution and confirm permissions for redistribution beyond the lesson.
Checksum: 9fac5f1ff13f65a30193369d4debe04a99b4d86a6ca1358a8810938ced5c701c

Repairer captions

Passage-aligned text with sound descriptions and ending credits.

File: captions.vtt
Credit: Story and direction: Renaissance Solutions. Artwork created with OpenAI; existing Speechify George narration and project-synthesized sound cues. See the retained credit record.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Attribution note: Original source hashes and revision are retained in source-manifest.json; no public-domain license asserted.
Made with: FFmpeg 8.1; existing approved Story Studio media
Rights note: RS lesson materials; retain attribution and confirm permissions for redistribution beyond the lesson.
Checksum: a0a84b7fa2098ebcf8c49a19ac0bc62d10ec30e078a0f53ea41fac0625e2573e

Repairer transcript

Spoken words and descriptions of the existing cues.

File: transcript.txt
Credit: Story and direction: Renaissance Solutions. Artwork created with OpenAI; existing Speechify George narration and project-synthesized sound cues. See the retained credit record.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Attribution note: Original source hashes and revision are retained in source-manifest.json; no public-domain license asserted.
Made with: FFmpeg 8.1; existing approved Story Studio media
Rights note: RS lesson materials; retain attribution and confirm permissions for redistribution beyond the lesson.
Checksum: 268e80ae98c689165a70f61224558592e4b33bb413ca78227b0f324961afab9c

Sound across a cut

A locally synthesized bed and cue over practice clips derived from the story pictures. No speech.

File: sound-across-cut.mp4
Credit: Practice assembly and synthetic tones: Renaissance Solutions. Moving fixtures derived from Story Studio artwork created with OpenAI under RS direction; no narration in this exercise.
Credit policy: Required for this RS publication.
Provider or source: Open provider or source
Attribution note: Original source hashes and revision are retained in source-manifest.json; no public-domain license asserted.
Made with: FFmpeg 8.1; existing Story Studio artwork and local tone synthesis
Rights note: RS lesson materials; retain attribution and confirm permissions for redistribution beyond the lesson.
Checksum: 5d76317b9a4a14b54112eb38875ca9b6eef7bcf9c1af473de46c5126d87c53dc

Research sources

Basic Recording, Editing and Exporting — Audacity Team; accessed 2026-09-17. Official manual for recording, editing, safety copies, and WAV or MP3 export.
Text to Speech Best Practices — ElevenLabs; accessed 2026-09-17. Official guidance on pronunciation, normalization, numbers, dates, abbreviations, and model-dependent behavior.
ElevenLabs Pricing — ElevenLabs; accessed 2026-09-17. Current official tier, credit, commercial-license, and output-quality claims; prices can change.
Terms of Service — Descript; accessed 2026-09-17. Official consent, AI voice, user-content ownership, non-uniqueness, storage, and review terms.
Images in ChatGPT — OpenAI; accessed 2026-09-17. Official create, upload, edit, save, aspect-ratio, and edit-spillover documentation.
Adobe Firefly Technical Requirements — Adobe; accessed 2026-09-17. Official upload formats and documented JPG or PNG download limit of 2000 by 2000 pixels.
GIMP Text Management — GIMP Documentation Team; accessed 2026-09-17. Official documentation for text layers and continued text editability.
GIMP Export Image as PNG — GIMP Documentation Team; accessed 2026-09-17. Official documentation explaining PNG export and loss of layer structure in a single-layer format.
Adobe Generative AI User Guidelines — Adobe; accessed 2026-09-17. Official guidance on third-party rights, sensitive information, automated or manual review, and Content Credentials.
Creating with Gen-4.5 — Runway; accessed 2026-09-17. Official text-to-video and image-to-video specifications, duration, resolution, credits, and export options.
Caption Videos — Adobe; accessed 2026-09-17. Official caption generation, review, correction, styling, positioning, and download workflow.
DaVinci Resolve — Blackmagic Design; accessed 2026-09-17. Official editing, effects, audio, delivery, free-version format, frame-rate, and resolution claims.
DaVinci Resolve Edit: Subtitles and Closed Captioning — Blackmagic Design; accessed 2026-09-17. Official subtitle creation, styling, rendered-video, and sidecar export claims.
Terms of Use — Runway; accessed 2026-09-17. Official input and output ownership, commercial use, training license, user responsibility, and non-uniqueness terms.
Download generated Text to Speech files — ElevenLabs; accessed 2026-09-18. Official export guidance; not a listening test.
Billing and usage — ElevenLabs; accessed 2026-09-18. Plan-specific commercial-use and attribution guidance. Verify current terms before publication.
AI text to speech — Descript; accessed 2026-09-18. Official stock-voice and script-based speech editing overview.
Audacity audio editor and recorder — Audacity Team; accessed 2026-09-18. Official recording and editing overview.
Export your audio — Audacity Team; accessed 2026-09-18. Official export guidance.
Images in ChatGPT — OpenAI; accessed 2026-09-18. Official image creation, editing and export documentation; includes edit-spillover limitation.
Generate images from text descriptions — Adobe; accessed 2026-09-18. Official text-to-image workflow.
Generative Fill — Adobe; accessed 2026-09-18. Official selected-area image editing workflow.
Using Magic Media — Canva; accessed 2026-09-18. Official image-generation and design workflow.
Licensing explained — Canva; accessed 2026-09-18. Library licensing guidance; not a blanket license for all uploaded or generated material.
Getting started with generative video — Runway; accessed 2026-09-18. Official generative video orientation.
Creating with Gen-4.5 — Runway; accessed 2026-09-18. Current official text-to-video and image-to-video capabilities; no comparative quality test.
Generate videos using images — Adobe; accessed 2026-09-18. Official image-to-video workflow.
DaVinci Resolve — Blackmagic Design; accessed 2026-09-18. Official editing, visual effects, audio and delivery overview.
Create a new presentation with Copilot in PowerPoint — Microsoft Support; accessed 2026-09-18. Official documentation for prompt- or file-based deck creation, organization templates, editability, availability limits, provenance notes, and required human review.
Use Magic Design to generate design templates — Canva Help Center; accessed 2026-09-18. Official documentation for presentation template suggestions from ideas, text, images, imports, and Brand Kits, with customization and plan-content caveats.
How do I create a new presentation, document, or webpage in Gamma? — Gamma Help Center; accessed 2026-09-18. Official Generate, Paste, and Import modes plus manual and AI refinement options.
What's the easiest way to export my Gamma? — Gamma Help Center; accessed 2026-09-18. Official PDF, PNG, and PPTX export details, editable-table behavior, free-plan badge, and font-substitution caveats.
Generate presentations with Gemini in Google Slides — Google Docs Editors Help; accessed 2026-09-18. Official fully editable deck generation, Drive and web source controls, outline approval, availability limits, and feedback privacy warning.
Sound effects product guide — ElevenLabs Documentation; accessed 2026-09-18. Official prompt generation, duration and loop controls, variations, MP3 and WAV downloads, and advice to assemble complex sequences in an editor.
Sound Effects Terms — ElevenLabs; accessed 2026-09-18. Official supplemental terms including the output sublicensing setting and limits of a later opt-out.
Billing — ElevenLabs Documentation; accessed 2026-09-18. Official plan-level licensing statement: paid-plan generations receive commercial rights; free-plan content is limited to noncommercial use with attribution.
Writing effective text prompts for sound effects generation — Adobe Firefly Help; accessed 2026-09-18. Official text-to-sound and voice-to-sound capability, including voice performance as timing and energy guidance.
Freesound Frequently Asked Questions — Freesound; accessed 2026-09-18. Official asset-level CC0, CC BY, and CC BY-NC guidance, attribution examples, uploader-risk warning, and attribution-list feature.
Generate Menu — Audacity Manual; accessed 2026-09-18. Official documentation for local generation of tones, noise, silence, and plugin-based generators.
Basic Recording, Editing and Exporting — Audacity Manual; accessed 2026-09-18. Official recording, trimming, effects, normalization, safety-copy, WAV, AIFF, and MP3 export workflow.
Character Script to Video — Runway Help Center; accessed 2026-09-18. Official current app for animating a preset or uploaded character image from typed text or uploaded audio; requires credits.
Deprecated Standalone Tools — Runway Help Center; accessed 2026-09-18. Official notice that the standalone Lip Sync tool was deprecated May 27, 2026 and points to Act Two.
Create your first video in HeyGen Studio — HeyGen Help Center; accessed 2026-09-18. Official public or custom avatar, voice, script, custom audio, scene, and timing workflow.
Recording your Consent Video — HeyGen Help Center; accessed 2026-09-18. Official consent-video requirement for every video-based Digital Twin, including same-person and capture requirements.
Sync Labs Introduction — Sync Labs; accessed 2026-09-18. Official Studio and API availability, video-plus-audio workflow, supported formats, plan-dependent duration, and current model family.
Sync Labs Lipsync Models — Sync Labs; accessed 2026-09-18. Official model tradeoffs and caveats for still frames, natural speaking motion, face angles, obstructions, resolution, duration, and pricing.
Record and playback scenes in Adobe Character Animator — Adobe Character Animator Help; accessed 2026-09-18. Official puppet recording, microphone and camera input, speech-aware animation, scene-audio lip sync, and correction workflow.
Speechify Studio: stock sound effects and generation availability — Speechify; accessed 2026-09-21. Stock sound effects listed; custom AI sound-effect generation marked coming soon. Account workflow not tested.
FFmpeg download and platform builds — FFmpeg; accessed 2026-09-24. Official download page links to compiled third-party builds. Native Windows installation is not tested here.
FFmpeg filters — FFmpeg; accessed 2026-09-24. References for trim, scale, pad, concat, apad, adelay, afade and amix; performance is established separately by our trial.
FFmpeg command reference — FFmpeg; accessed 2026-09-24. Input/output mapping, stream copy, encoding and overwrite options.

Boundaries

The voice, image, and video media are actual bounded production runs with provenance. They do not rank products, predict performance in another project, or establish audience preference. The sound-effects collection includes locally synthesized knocks, rain, and a vintage-radio cue with human listening feedback; its remaining nine effects and provider walkthroughs are pending. The slide-deck and Lip Sync pages contain worked briefs and source-checked research; they do not claim hands-on trials or published example outputs. The two video examples use FFmpeg to assemble one generated still; they do not test a generative video model. The voice examples use stock synthetic voices, not a cloned person.