Video settings (Open Brush.cfg)

FPS, resolution, encoder, watermark, and capture flags.

Several capture and render settings live in the config file. See The Open Brush config file for location and format rules.

This is an example snippet showing the fields that affect capture and rendering:

{
  "Video": {
    "Resolution": 1920,
    "OfflineResolution": 1920,
    "FPS": 30,
    "OfflineFPS": 30,
    "ContainerType": "mp4",
    "CameraSmoothing": 0.98,
    "Encoder": "h.264",
    "SaveCameraPath": true,
    "ForceFrameSequenceRender": false,
    "UsePngForFrameSequence": false,
    "FOV": 129
  },
  "Flags": {
    "PostEffectsOnCapture": true,
    "ShowWatermark": false,
    "ShowHeadset": false,
    "ShowControllers": true,
    "DisableAudio": false
  }
}

FPS and performance

FPS affects memory use. Each frame must be rendered and encoded.

Live recording is heavier than it looks. VR already renders twice (one per eye). Recording adds another render/encode pass.

If you run out of memory, VR can stutter. Stutter can quickly cause VR sickness.

Offline panorama resolution

OfflineResolution controls the width used when rendering an offline ODS panorama. Open Brush accepts values from 640 to 8000 pixels. If the field is omitted, ODS rendering uses its existing default width of 4096 pixels.

The ODS preview mode remains at 1024 pixels and is not enlarged by this setting. An 8K render requires substantially more GPU memory and takes longer to complete than the default.

For example:

{
  "Video": {
    "OfflineResolution": 8000
  }
}

See the 360° / ODS video workflow for the complete process.

Frame-sequence rendering

Standalone builds automatically save Camera Path renders as numbered still images because they do not include a video encoder. Two Video settings control this workflow:

ForceFrameSequenceRender makes desktop builds write a frame sequence instead of an encoded video when set to true.
UsePngForFrameSequence uses lossless PNG frames when set to true. The default value, false, uses JPG frames and requires less storage.

Each render creates a <recording-name>_frames folder and a matching <recording-name>_sequence.txt file in the Open Brush Videos directory. The text file records the frame rate, resolution and an example ffmpeg command.

See Quest and other standalone headsets for the complete workflow.