Windows app available — Available now
Start VTuber
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Male sample character with black hair, amber eyes and a navy and black outfit

HOW TO USE

One step at a time,get ready to stream.

Follow the new app from Characters to Camera setup and Stream setup, using the controls in the development build.

  1. Prepare your PC

    Windows x64 and WebView2 Runtime. Check the requirements page too.

    Illustrated software package featuring Aster; not a physical product
    Learn more

  2. Choose from Characters

    Try the display with a supplied character.

    Learn more

  3. Set up your camera

    Set up the camera for your movements when needed.

    Learn more

  4. Prepare the layout and OBS

    Check the display and recording in OBS on the same PC.

    Learn more

These illustrations show each step. Open “Learn more” for instructions and app screenshots.

Available now

Choose a ready character and prepare your stream.

Choose the display language at the top of the app. Sign in with your website account, or select “Use prepared characters without signing in” to open Characters. Start with bust-up Aster, included in the development build.

What you will need

What you will need

Windows PC

Windows x64 and WebView2 Runtime. Check the requirements page too.

Camera

A built-in or USB PC camera for checking head, eye and mouth input. Not needed for image review alone.

OBS Studio

Separate software for composing your stream. It is not bundled with Start VTuber.

Microphone & headphones

For voice streaming. Configure audio in OBS.

Check the rights to illustrations you bring in

You need a lawful basis, such as your own work, the rightsholder's permission or an applicable license. Buying an image does not necessarily permit editing, streaming, commercial use or processing by a cloud provider. Check the permitted uses before sending it; ask the rightsholder if unclear.

Terms of service and software licence
  1. 01

    Choose from Characters

    Start with bust-up Aster, included in the development build. After the entry screen, open Characters and select “Use this character” for Aster, the male sample, or a received character. Wait for rendering. The selection is saved on this PC; the camera has not started.

    Characters in the new app

    Choose a prepared character and continue to display and setup.

    Characters in the new appView larger image ↗
  2. 02

    If you want a new character

    Start with text or up to five reference images, review and approve the front, review or revise directions, then receive the character after cloud finishing. Starting from images does not require repeated chat-style questions.

    Creation method interaction preview

    These screens were captured on 9 September 2026. Their appearance may differ from the current app.

    Creation method interaction previewView larger image ↗
  3. 03

    Set up your camera

    In Camera setup, choose a device and select “Start camera”. Review any permission prompt yourself. Expand or collapse your camera image using the preview controls. Watch the character and recognition status before measuring.

    Start cameraBegin camera setupMeasure this postureSave these settings

    • A saved profile keeps your existing sensitivity. Use “Use these settings for streaming” if no new measurement is needed.
    • To measure again, start setup and follow front, up, down, your left, your right, then normal motion. Move comfortably while keeping the screen visible.
    • “Measure this posture” shows remaining seconds and recognition status. If it fails, read the reason and retry this step. Canceling retains the previously saved profile.
    • Finish with “Save these settings”. If only your seating position changed, hold still facing forward and recenter. Your camera image stays inside settings and is not broadcast or saved.
    Camera setup in the new app

    Select a camera, then check its image and the character response to adjust settings.

    Camera setup in the new appView larger image ↗
  4. 04

    Prepare the layout and OBS

    In Stream setup, drag the character to move it. Resize with the bottom-right handle or size slider, or choose the bottom-left/right presets. Wait for the saved/output-applied status, then select “Start stream output” and “Copy OBS URL”.

    • On the same PC, create a test scene in OBS and add a Browser source. Disable Local file and paste the URL.
    • Start at 1920×1080 and 60 fps. Recheck placement if you change the aspect ratio.
    • Turn off source shutdown when hidden. Put your background below the transparent character. The checkerboard, handles and camera image are excluded from output.
    • Starting output does not start a live stream. Set up audio separately in OBS and make a short local test recording. Real-face tracking and minimized simultaneous operation still require hardware checks.
    OBS official guide: Browser Source ↗
    Stream setup in the new app

    Adjust character position and size and prepare to display it in OBS.

    Stream setup in the new appView larger image ↗
  5. 05

    Save, close and resume

    Save camera measurements with “Save these settings”. Position and size save automatically or with “Save layout”; wait for the saved status. Stop camera and stop output are separate controls. After fully closing and reopening the app, check the restored settings and start the camera/output you need.

If you get stuck

No character appears

Wait for loading and check the selected character. If an error appears, use Reload renderer. Keep the error text and character name if it repeats.

Camera unavailable

Check USB, Windows camera permissions and use by another app. Stop, refresh the camera list and select again. Adjust face position and lighting if recognition fails.

Cannot create a new character

Sign in with your website account and check your valid production tickets. See pricing for purchase availability. If a result is uncertain, check the existing job before buying or generating again.

Layout not restored or OBS blank

If saving failed, retry Save layout without discarding your edits. Check output start, URL and 1920×1080 in OBS, then reload the Browser source if needed.

FAQContact
Previously saved projects

For older projects only, open “Settings / backups” → “Open saved projects in classic UI” to use the previous editor. This does not export the new UI’s characters and placement settings together.

More: screen labels and differences from earlier versions

These are real Windows screens captured with camera and output stopped. They do not demonstrate live-face tracking, OBS recording or successful complete production with the new packs.

Source: localized Windows build studio-i18n-v1 (9 September 2026), retaining the character assets after the lip fix. Captures show sample cards and setup controls, excluding personal and authentication information.