Format at a glance
- Full name
- LocalFileLab Studio Project
- File extensions
- .lflstudio
- MIME types
- application/x-localfilelab-studio
- Category
- Text and data
- Compression
- ZIP-based container
- Transparency
- Not applicable
- Animation
- Not applicable
- Properties
- Multiple media tracks
Suitable tools
What is this format?
An LFLSTUDIO file is a ZIP-based project container. It contains a project.json with the format version, studio type, project name, master gain, tracks, clips and effects, plus a sources folder holding the embedded source files.
Editing remains non-destructive: position, trim, speed, gain, pan, fades and effects are saved as project values without rewriting the original audio. The studioType field already distinguishes audio projects from future video and image studio projects.
What is it used for?
- Save multitrack work from LocalFileLab Audio Studio and continue later
- Move a project, its timeline settings and its audio sources to another device as one file
- Archive editing milestones without separately documenting every source clip and position
- Identify the project type for future audio, video and image studio tools
Which programs can open it?
- LocalFileLab Audio Studio for opening and editing
- ZIP tools such as 7-Zip for technical inspection of the container
- Text editors for diagnosing the included project.json
Support across devices and browsers
LocalFileLab Audio Studio can open and save LFLSTUDIO projects in a current desktop browser.
The project format works in Audio Studio through a current browser; available audio codecs depend on browser support.
Current Chromium- and Firefox-based browsers can process the project locally when they can decode its embedded audio formats.
The project can be opened in a browser in principle, but large multitrack projects may exceed the device's available memory.
Safari can process smaller projects; memory limits and supported audio formats depend on the device and system version.
The file is unpacked and processed entirely in the browser. It is not sent to a LocalFileLab conversion server when opening or saving.
Advantages
- Bundles the project structure and source media into one portable file
- Preserves non-destructive clip, track, effect and export settings for continued editing
- Requires neither a user account nor cloud project storage
Disadvantages
- Embedded source media can make a project much larger than a settings-only file
- As a young format, later studio versions may need migration rules for older projects
- LFLSTUDIO is not a playable delivery format and must be rendered to WAV, MP3 or another audio format for media players
Comparison with alternatives
LFLSTUDIO uses a ZIP container but adds a defined project structure containing project.json and embedded sources.
Project settings are stored as JSON, while a plain JSON file would not carry the referenced audio files with it.
WAV stores finished rendered audio. LFLSTUDIO instead preserves the editable multitrack arrangement and its sources.
LocalFileLab support
Audio projects with studioType audio and the supported project version can be opened in Audio Studio.
Audio Studio saves the project structure and every used source file together as .lflstudio.
The container is currently written without additional ZIP compression so already compressed media is not needlessly compressed again.
There is no generic file preview; the useful preview appears in the studio timeline after opening the project.
project.json includes the version, studioType, project name, master gain, tracks, clips, effects and references to embedded sources.
Related formats
Frequently asked questions
Can I open an LFLSTUDIO file with a ZIP utility?
Yes, the container can be unpacked for technical inspection. Editing project.json or its sources manually can make the project unusable.
Are the audio files included in an LFLSTUDIO project?
Yes. The current Audio Studio places every used source in the sources folder so the project can open without separate media links.
Is LFLSTUDIO a finished audio format?
No. To play it outside the studio, render and download the complete mix or a selected range as WAV, MP3 or another audio format.