Speechify's job is turning written text into something you listen to — an article, a document, a script read aloud. generate_speech does that same underlying step inside Versely, but it's positioned differently: the output is meant to become a finished, postable video, not a standalone audio file that still needs a video built around it afterward.
The path from a pasted script to a captioned, published clip follows.
A script becomes directed narration
generate_speech turns written text into spoken audio, with emotion and style_instructions steering the pace and tone toward something specific instead of a flat, uniform delivery — the same mechanism whether the source is a full article, a product script, or a single paragraph.
Narration lands on the video, precisely
attach_audio_to_video takes two settings: mode 'replace' drops the original track entirely and makes the new narration the whole soundtrack, while mode 'mix' keeps what was already there and layers the narration on top, with independent volume controls on each side. Reading content over B-roll with no audio of its own calls for 'replace'; narrating over footage that already carries its own sound calls for 'mix'.
The words appear on screen too
add_veed_captions transcribes whatever generate_speech just produced and burns styled, word-timed captions over it, in any of 165 language codes and either tier of preset — 21 restrained BASIC looks or 9 higher-motion DYNAMIC ones — so the same clip works on a feed where most people never turn the sound on.
One instruction covers the whole path
write-and-generate-a-voiceover is the script-to-narration step reachable as a single plain-English request to the agent, and it chains naturally into attaching the audio and captioning the result — script in, finished captioned video out.
How it works
1. Paste the script
An article, a product description, a full narration script — the source text.
2. Pick a voice and direct the delivery
generate_speech with emotion or style_instructions for pace and tone.
3. Attach it to video
'replace' for narration-only audio, 'mix' to layer it over existing sound.
4. Caption it for social
add_veed_captions burns styled, timed captions on top, ready to post.
Where this lives in Versely
Add a Voiceover to a Video
/video-editing
Add Captions to a Video
/video-editing
Write and voice a script
/agent
Transcribe and caption my video
/agent
AI Text to Speech
/tools
AI Caption Generator
/tools
Classic caption presets
/caption-styles · 5 variants
Paper caption presets
/caption-styles · 5 variants
Digestive System Explainer
/workflows
Who this fits
- Turning a blog post or article into a narrated, captioned video
- Faceless YouTube channels reading a written script
- Course or explainer narration that also needs to work as a silent-feed clip
- Converting written content into short-form video for social
Frequently asked questions
How does Versely compare to Speechify?+
Versely's generate_speech turns a script into spoken narration the same way, with emotion and style_instructions to direct the delivery. The difference is what happens after: attach_audio_to_video lays that narration onto a video (replacing or mixed under existing sound), and add_veed_captions burns styled, timed captions on top in the same flow — so the output is a finished, captioned video rather than a standalone audio file.
Can I control the pacing or tone of the read?+
Yes — the same emotion and style_instructions controls that steer generate_speech everywhere else in Versely apply here too, so a script can be directed toward a specific delivery instead of a flat, uniform read.
Does the narration replace a video's original sound, or sit alongside it?+
Either — attach_audio_to_video's 'replace' mode makes it the only track, and 'mix' layers it over existing audio at a volume you set on each side.
Can the same clip get captions as well as narration?+
Yes — add_veed_captions transcribes the narration and burns styled, timed captions on top, in 165 language codes across 21 BASIC and 9 DYNAMIC presets.
Other alternatives on Versely
Further reading
Try it inside Versely
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Reviewed August 19, 2026. Facts about Speechify on this page are general, publicly known positioning, not pricing or feature claims — see /alternatives for how this page set is scoped. Versely capability links above are pulled from the same live data the rest of versely.studio uses, so they move when the product does.