Timecoded and Controllable Buffer (VJ.Tools)

Daydream Scope node for VJSync beat-grid timecoding. Stamps barcode timecodes using Ableton Link beat clock, preserves them through AI video generation via VACE masking, and provides buffered playback with MIDI/OSC feedback.

Nodes

VJSync Timecode (Preprocessor)

Stamps a 16px VJSync v2 TMR barcode at the bottom of input frames and generates VACE masks to preserve it through AI generation.

• Timecode toggle — enable/disable barcode stamping at runtime
• VACE masking — binary mask tells AI to preserve barcode pixels
• Configurable feathering — soft transition at barcode boundary

VJSync Post (Postprocessor)

Buffers AI output with playback speed and latency controls, decodes surviving timecodes, and sends feedback to external controllers.

• Playback speed — 0.1x to 4x, outputs multiple frames per call at higher speeds
• Buffer delay — 0-5000ms latency buffer
• Barcode decode — measures timecode survival rate through AI
• MIDI CC feedback — buffer fill level and decode rate sent as CC values for LED ring visualization
• OSC feedback — full buffer stats at 20Hz to TouchOSC, Lemur, etc.

All runtime parameters are automatically available for MIDI mapping in Scope's controller interface.

Installation

In Daydream Scope:

• Settings → Nodes → paste the GitHub URL: https://github.com/OpticMystic/scope-timecoded-buffer-vj_tools

For local development:

uv pip install -e /path/to/scope-vjsync-node

Preprocessor Parameters

Parameter	Type	Default	Description
timecode_enabled	bool	true	Enable/disable barcode stamping
control_mode	string	"none"	"none", "canny", "depth", or "scribble"
canny_low	int	50	Canny lower threshold
canny_high	int	150	Canny upper threshold
mask_feather	int	2	Soft transition pixels at barcode boundary

Postprocessor Parameters

Parameter	Type	Default	Description
playback_speed	float	1.0	Playback speed (0.1-4.0)
buffer_delay_ms	float	0.0	Latency delay in ms (0-5000)
strip_barcode	bool	true	Remove barcode strip from output
decode_tc	bool	true	Decode timecode and report survival
osc_feedback	bool	false	Send buffer stats via OSC
midi_feedback	bool	false	Send buffer fill as MIDI CC

MIDI/OSC config (port, channel, CC numbers) is in Settings panel.

Dependencies

• opencv-python-headless (required)
• mido + python-rtmidi (optional, for MIDI feedback)
• python-osc (optional, for OSC feedback)

License

MIT