Sink (3rd Party) Stages¶

Sink 3rd party stages are the endpoints of a decode-orc pipeline targeting external tools (external from the ld-decode and vhs-decode projects). They consume processed data from upstream stages and write results to disk or hardware. Unlike transform stages, sink stages do not produce outputs that can be connected further downstream.

A pipeline may contain multiple sink stages in parallel, allowing the same processed stream to be written in different formats or to different destinations.

Sink core stages are used to:

Write final video outputs (TBC + metadata)
Export auxiliary data such as audio, EFM, or closed captions
Output video directly to hardware for monitoring or capture
Export intermediate data for inspection or external tools

HackDAC Sink¶


Stage id	`hackdac_sink`
Stage name	HackDAC Sink
Connections	1 input → no outputs
Purpose	Output video directly to HackDAC hardware

Use this stage when:

You want real-time analogue video output
Monitoring pipeline output on CRT or analogue equipment
Testing signal characteristics on real hardware

What it does

This stage streams processed video fields directly to connected HackDAC hardware.

Parameters

Hardware-specific parameters may be supported depending on build and platform.
Typical configurations are provided externally rather than via stage parameters.

Notes

This stage is hardware-dependent.
Timing and field order must already be correct upstream.

Daphne VBI Sink¶

TBA