Features

Built for fast caption workflow.

Flixlar focuses on practical caption editing, local AI captions, and export — all local on your computer.

macOS compatibleWindows compatibleLinux compatible

Digitally signed Windows and macOS installers included, with more features and tools planned based on your feedback.

CAPTION WORKFLOW

Edit captions fast

Import SRT

Bring existing subtitle files into your project.

Edit captions

Create, edit, delete and navigate captions quickly.

Live preview

See captions directly on the video while editing.

Flixlar caption editor with video preview, timeline and caption list interface
Edit, preview and fine-tune captions in real time.

TIMELINE

Visual caption timeline

Timeline clips

View captions as visual clips across the timeline.

Overlap lanes

Overlapping subtitles automatically organize into separate lanes.

Active tracking

Follow the currently active caption while previewing playback.

Flixlar visual caption timeline clips with overlapping subtitle lanes
See caption timing visually with timeline clips and overlap lanes.

GET STARTED

Open files your way

Drag & drop

Drop videos, SRT files or project files directly into Flixlar.

Open with Flixlar

Open supported files directly from your operating system.

Video files

Open MP4, MOV, WebM and other common video formats.

SRT subtitles

Import existing SRT subtitle files for editing.

Project files

Open previously saved Flixlar projects.

Flixlar drag and drop start screen for opening video, subtitle or project files
Drag & drop or open video, SRT and project files instantly.

EXPORT

Export ready-to-share videos

Burn captions in

Render captions directly into the picture. This re-encodes the video — audio stays untouched.

Embed switchable tracks

Add one or more subtitle languages as a switchable track in MP4 or MKV. Video and audio are never re-encoded — only the subtitle stream itself is converted.

SRT export

Send captions back out to other workflows.

Caption modes

Choose clean or stacked caption rendering.

Flixlar export panel showing MP4 rendering with caption settings and progress bar
Export with burned-in captions or share subtitles in SRT format.

LOCAL AI

Local AI captions

Generate subtitles offline with a local speech-to-text model — no cloud, no upload.

Model choice

Pick a tiny, base, or small model depending on speed vs. accuracy.

Runs on your machine

Transcription happens locally, using your own CPU/GPU.

Editable output

Generated captions land in the same timeline you already edit in.

EFFECT EDITOR — BETA 1

AI-assisted visual effects (beta)

An experimental addition alongside Flixlar's caption and subtitle tools.

Describe it

Describe an effect in plain language and bring your own AI to generate the canvas code.

Preview live

See the effect play over your video's waveform and duration before exporting anything.

Export or save as a layer

Export as a PNG sequence or transparent WebM, or save it as a reusable project layer.

Watch on YouTube →

DESKTOP EXPERIENCE

Built for local workflows, diagnostics and creator-focused subtitle editing.

Automatic sidecar detection

Automatically detect matching subtitle files for videos.

Diagnostics tools

Built-in logging and diagnostics for troubleshooting and bug reports.

Multi-platform desktop app

Available for Windows, macOS and Linux workflows.

Flixlar diagnostics and status bar interface showing session logs, export progress and feedback tools
Flixlar is designed as a local-first desktop application with signed installers, diagnostics tools and creator-friendly subtitle workflows.

PLANNED

More tools coming

Expanding Flixlar into a complete caption and video toolkit.

Session diagnostics

A better session log viewer with clearer, more readable diagnostics formatting.

Timeline improvements

Zoom and paging for long timelines, plus better HTML5 video compatibility handling.

More video tools

Flixlar is planned as a small suite of practical video tools.