Offline rendering (HQ renders)

Re-render recorded videos via .bat files or the command line.

Offline rendering lets you re-render a recorded camera move. You can output higher resolution and/or higher FPS.

It works by saving the camera motion to a USD file. Then Open Brush can replay that motion later.

Enable camera path saving

Set "SaveCameraPath": true in your config. See The Open Brush config file.

What files you get

When you record a video with SaveCameraPath enabled, Open Brush writes extra files. On Windows, you’ll see a batch file next to the video in Documents\Open Brush\Videos. On macOS, the equivalent file has a .HQ_Render.sh suffix.

Example:

Untitled_13_00.mp4
Untitled_13_00.HQ_Render.bat

Re-render using the Windows .bat

Double-click the .bat. Pick an option from the menu.

Open Brush will:

1. Launch
2. Load your sketch
3. Render the video
4. Exit

Higher quality settings can make the framerate choppy. Don’t wear the headset during the render.

Re-render using the macOS script

1. Quit Open Brush.
2. Open Terminal.
3. Type bash , including the trailing space.
4. Drag the generated .HQ_Render.sh file from the Open Brush Videos folder into Terminal and press Return.
5. Choose a resolution and frame-rate option from the menu.

The macOS build includes the ffmpeg executable used by the script. If macOS blocks the app or script, allow it in System Settings > Privacy & Security, then retry.

“No Quick Load” option

The “No Quick Load” option forces a full load. Use it when your render finishes before the sketch fully loads.

Render a saved camera path from the command line

The camera path is saved in ASCII USD (.usda). If you have other USD tools, you may be able to edit it.

To render directly:

Openbrush.exe --renderCameraPath <path/to/camerapath.usda> <path/to/sketchfile.tilt>

Video camera paths vs Camera Paths tools

These are different concepts:

• Camera Paths tools create a path that Open Brush records.
• Video camera paths are the saved motion data used for offline re-rendering.

The saved .usda path can be combined with USD exports. That can recreate camera motion in other pipelines.