Formats and colour space

This pack records. It does not make media. Frames are written by ComfyUI's image encoder in the format the operator picked, clips by VideoInput.save_to(), and both are read back by ComfyUI's decoder.

Frame formats

format	what it is for
8-bit PNG	The plain case. Review media is 8-bit whatever the frames are.
16-bit PNG	SG Load reads it back at full precision.
EXR 32-bit float	Pixels are written unchanged.

The format widget on SG Publish picks one. The extension follows the files, not the path template.

SG Publish before a Run with the format widget set to EXR 32-bit float — The panel says what this Run will publish, and in what format, before the Run.

Video

A VIDEO read from a file is uploaded as that file, byte for byte.
Anything else is written by ComfyUI's VideoInput.save_to(), with its colour space, bit depth and audio.
ComfyUI's IMAGE is a float32 tensor with no file behind it, so a still is encoded before upload.

Review media

Review media is 8-bit and is derived, so it may be transcoded. A deliverable file is never transformed. Pillow writes the 8-bit review still and nothing else.

A Version has one uploaded media file (probe 022). sg_path_to_frames and sg_path_to_movie are path references, and RV reads them to switch between the transcode and the source.

Colour space

Colour space is recorded, never applied.
The declared value goes in the PublishedFile's description.
SG Load returns it as the colour_space output.
Core ComfyUI has no colour management. Install says what to add for a colour-managed pipeline.