What it checks
Where the destination's SDH subtitles follow a color code (in France, the CSA charter of December 2011), a file whose text is entirely white is often a regular subtitle file delivered as SDH by mistake. The rule produces a single issue for the whole file, not one per subtitle.
A program where every speaker is visible on screen can legitimately be all white, which is why the shipped profiles declare this rule as a warning.
How it is measured
CueNorm looks at the text color of every span of every subtitle. Text without an explicit color counts as white, and so does explicit white. As soon as one span uses another color, the rule reports nothing. An empty file is not reported.
Parameters
This rule takes no parameter.
Example
A file whose subtitles are all white is reported once as No subtitle uses a color: SDH subtitles for this destination follow a color code (all text is white).
How to fix
- Check that the file really is the SDH version and not the regular subtitles.
- If it is, apply the destination's color code: off-screen speakers, sound and music indications, thoughts and foreign languages each have their color (see
SDH_COLOR_CONVENTION). - If every speaker is on screen and nothing else calls for a color, the warning can be ignored.