Text Weight
txt-weight
Sets the font weight for a text overlay on video.
txt-weight accepts a numeric weight value (e.g. 400 for regular, 700 for bold) or a named weight. Availability depends on the font family set by txt-font. Use txt-weight[N] for a specific text layer.
This parameter works identically to txt-weight in the Rendering API.
For the full list of text overlay parameters, see the Text Overlays overview.