Surtitles solved a problem opera had lived with for three centuries, and they created a new one on the same evening. An audience that can read the text is an audience that is reading rather than watching. Every decision about titles is a decision about how much looking away the production is willing to buy.
The practice began at the Canadian Opera Company in 1983 and spread quickly, over objections that turned out to be about exactly this trade. The objections were not foolish. They were early.
Reading costs time that the stage is not getting
A line of text takes a measurable interval to read, and during that interval the reader is not looking at the performers. The interval is not shortened by putting more words up; it is lengthened. Practical title writing is therefore compression rather than translation.
Published editorial guidance from broadcasters and subtitling houses sets limits on how much text may be displayed for how long, expressed as characters per second or as words per minute. Those documents are published by the organisations that commission the work, which makes them a reasonable guide to practice and not a physical law; different houses set different limits, and none of them were written for a libretto.
What makes opera titles different from film subtitles
Film subtitles are locked to a timecode and are identical at every screening. Titles for a live performance are cued by an operator following a score, and the score moves. A conductor takes a phrase slower on the Saturday than on the Tuesday, a singer holds a fermata, and a title that was correct on one night arrives early on the next.
Repetition is the other difference, and it catches people out. Music repeats text constantly: a line sung four times is one line of meaning and four lines of music. Putting it up four times tells the audience the composer is stuck. Putting it up once, timed to the first statement, lets them return their eyes to the stage for the other three.
Titles are not captions
Translation for an audience that cannot understand the language and captioning for an audience that cannot hear are separate jobs with separate requirements. Captioning must convey who is speaking, and non-speech information that carries meaning. Translation may leave all of that to the ears. A production that supplies one and calls it the other has served one audience and not the other, and the article on captioning in the house section deals with the difference.
Where the panel goes decides how much is lost
Above the proscenium arch is the traditional position and the most expensive one in attention, because the eye travels the full height of the opening and back for every line. Closer to the stage line the journey is shorter, and some houses have installed individual displays at the seat, which reduce the movement almost to nothing and only work where seating is fixed and the installation can be afforded.
There is no free position. Titles low enough to be read without looking away are also close enough to compete with the staging for attention, and a designer who has lit the stage carefully now has a bright rectangle in the frame that nobody asked for.
Legibility is a distance problem, and brightness is a scenic one
Character height has to be set against the distance to the furthest seat rather than against what looks right on the operator's monitor. Standards bodies in the audiovisual field publish image sizing recommendations that relate the two, and we do not reproduce a single ratio here because the applicable figure depends on content type and viewing conditions that those documents specify carefully.
Contrast is a harder practical problem than size. Projected text lands on whatever surface is there, and a surface that is dark in the first act may be lit in the second. Outlining or shadowing the characters keeps them readable across both, and a dedicated surface keeps them readable across everything. The brightness of the title panel also raises the audience's adaptation, which is the mechanism described in the article on front light: a bright panel makes a carefully lit stage look darker than it measures.
The operator is part of the production
Titles are called, not played back. The person doing it is following a marked score in the dark, and a mistake is visible to the entire house in a way that an equivalent mistake in most departments is not. This is a rehearsed role that needs the same score access, the same production information and the same technical rehearsal time as any other, and budgeting it as an afterthought is how houses end up with titles arriving a bar late all evening.
What we cannot verify
Reading rate limits quoted in the subtitling field vary between publishers and are set by editorial policy informed by research rather than derived from a single measurement; we have not reproduced a specific figure for that reason. Claims about the legibility of particular display or projection products come from their manufacturers. Whether a given title solution works in a given house is answered by sitting in the worst seat during a technical rehearsal, which is a test nobody regrets running.
The short version
- Titles began at the Canadian Opera Company in 1983, and the old objection was about attention.
- Reading is time the audience is not watching, so title writing is compression.
- Live titles are cued to a moving score, not locked to timecode.
- Text repeated four times in the music is one line of meaning.
- Translation and captioning are different jobs for different audiences.
- Every panel position trades eye travel against competition with the staging.