1
Generate captions
In SmoothyEdit
Choose an audio or video file and generate timed captions locally.
New in 1.5.1 Stock Footage & Audio Library
SmoothyApp
Free forever. No account needed.
Keep more of your edit in one app. Captions, camera cuts, compression and graphics today. Stock footage, music previews, Favorites and Staff picks are available in 1.5.1 for Mac.
No sign-up. No credit card. No trial.
Supports Premiere Pro 25.x/26+ · macOS (Apple Silicon) · Windows (x64) · Release notes
Mac 1.5.1 is signed and notarized for Apple Silicon. Windows x64 remains on 1.5.0 while its update is being built. Read what’s available in 1.5.1 for Mac.
Smoothy is in active development. You might hit the occasional rough edge while we harden it — we ship fixes fast. Found a bug or want a feature? Tell us on Discord.
Explore the 1.5.1 workspace
Less setup. More time for the edit.
Seven free desktop tools, including Stock Footage and Audio Library, plus an optional Studio workspace connected to Premiere Pro.
Auto-switch multicam
Cameras follow whoever is speaking, cut automatically on your timeline.
Silence removal
Detect and cut dead air with thresholds you control.
Editable captions
Transcribe offline, edit each cue’s text and timing, and find or replace across the transcript. Save an SRT or send it to Premiere.
Video compressor
Create smaller HEVC files with quality and speed controls. Hardware acceleration when available; originals stay untouched.
SVG importer & assets New
Convert SVGs and images into PNGs, preserve transparency, and send the selected graphic to your Premiere timeline.
Explore SVG importStock Footage New in 1.5.1
Search Pixabay, Commons, Internet Archive and NASA together. Preview a clip, save the MP4 and import it into Premiere’s Project panel.
Explore Stock FootageAudio Library New in 1.5.1
Browse artist-made music from a YouTube Audio Library archive. Preview tracks, keep Favorites and start with Staff picks. Check each track’s license before publishing.
Explore Audio LibraryBest Shorts workspace Studio
Use a Premiere sequence, transcript, media file or YouTube transcript. Find multiple shorts or one best part, revisit history and add timeline markers.
New in 1.5.1
Your next shot. Your next soundtrack.
Stock Footage and Audio Library bring footage search, music previews, favorites and Staff picks into the same app as your editing tools. More of what you need, closer to your edit.
Explore the 1.5.1 libraries
Available in Mac 1.5.1. Windows 1.5.1 is coming next.
Inside the 1.5 workspace
Read the 1.5 release notes More room. Fewer clicks.
A sidebar that steps aside
Switch to the compact icon rail and keep every tool within reach. Your choice is remembered next time.
Shorts from the source you have
Premiere, a transcript, a media file or YouTube. Choose multiple shorts or one best part, then revisit results in history.
Know what each action does
Clear notes explain exports, new sequences and direct edits before you run them. Multicam mappings stay ready for your next project edit.
Captions you can actually fine-tune.
Transcribe in your language, then edit the text and timing in place. Find a name, replace it across the transcript, and undo the replacement in one step.
Choose the model, language and engine, plus line length, line count and duration. Reformat locally without running transcription again. Export an SRT or send the captions to Premiere.
Select a language Auto-detect available
ArabicTurkishVietnameseSwahiliBengaliUrdu
These are just a few choices available with a multilingual model. Recognition quality varies with the language and recording.
Find: SmoothieReplace: SmoothyReplace all
Editable text & timing · Local reformatting · Undo replacement
Free step-by-step guide
Add subtitles in DaVinci Resolve for free today
Generate captions in Smoothy, save the SRT, then import it as a subtitle track in Resolve. The guide walks through each step.
2
Save the SRT
Your subtitle file
Export the captions as an SRT file that Resolve can read.
3
Import into Resolve
On a subtitle track
Bring the SRT into DaVinci Resolve and place it on your timeline.
RESOLVE TIMELINE00:00:05
Every word lands right on time.
VIDEO
SRT
Common questions
Is the app really free? +
Yes — forever. The local tools are free and open-source (MIT). No account, no credit card, no trial. Studio's cloud AI is optional.
Which editors are supported? +
Premiere Pro is supported today. You can also export SRT subtitles and import them into DaVinci Resolve.
Does my footage leave my machine? +
Multicam, silence removal, captions, compression and Assets conversion run locally. Studio's optional cloud tools send the input needed for analysis, such as audio or text.
Do I need an account? +
No. Download, install, and it works with your footage locally. An account is only needed if you want to use Studio, the optional cloud add-on.
How does SVG import work? +
In SmoothyApp 1.5, open Assets, load an SVG and choose the output width and background. Smoothy renders a PNG and sends it to Premiere as a still image. You can keep the background transparent, export all loaded assets as PNGs, or use Save As for the selected file.
Are Stock Footage and Audio Library available now? +
Both libraries are available in SmoothyApp 1.5.1 for Mac. Windows remains on 1.5.0 while its update is being built. The interactive preview uses sample media and illustrative Staff picks; it does not play or download media. In the desktop build, online discovery needs an internet connection and imports go to Premiere’s Project panel.
Is every music track attribution-free? +
The current unofficial YouTube Audio Library archive does not supply verified track licenses. Check the specific track in YouTube Studio before publishing. YouTube’s official library includes standard-license tracks without attribution and Creative Commons tracks that require credit.
What is Studio? +
Studio is the optional cloud add-on. A free account includes limited cloud AI; Studio Pro ($5/month, 2,000 credits every 30 days) unlocks the full set, including Best Shorts markers sent to your timeline. It is separate from the free app and never required.
DaVinci Resolve plugin coming soon
Smoothy works with Premiere Pro today. A DaVinci Resolve plugin is on the way.