  Some methods of automatic simultaneous translation of a long-form speech
allow revisions of outputs, trading accuracy for low latency. Deploying these
systems for users faces the problem of presenting subtitles in a limited space,
such as two lines on a television screen. The subtitles must be shown promptly,
incrementally, and with adequate time for reading. We provide an algorithm for
subtitling. Furthermore, we propose a way how to estimate the overall usability
of the combination of automatic translation and subtitling by measuring the
quality, latency, and stability on a test set, and propose an improved measure
for translation latency.
