A US political video gets its message across to viewers who have their sound turned off.
The creators of a YouTube film of President Barack Obama endorsing fellow Democrat Hillary Clinton have made subtitles an integral part of the design.
As Obama speaks to camera, his words appear in different places on the screen, and in varying font sizes; larger fonts are used for points the Clinton campaign wants to emphasise.
A problem with video online is that so many people cannot listen to the audio because they are in an office, on a train, etc. On Facebook and Twitter, videos start playing with the audio switched off as the default.
The producers of this slick video of Obama endorsing Clinton for president seem to understand this - and have made ‘mega subtitles’ an key part of the film, rather than a small-text, crude-font bolt-on.
This means that the video gets its messages across whether viewers have their sound off or on, a potential lesson for companies looking to use video effectively on their online channels.