Online video platform provider Brightcove has apologised for the outage that prevented some viewers from watching STV’s Scottish independence debate between Alex Salmond and Alistair Darling.

The programme was only aired on TV by STV in Scotland, which meant interested viewers from England, Wales or Northern Ireland had to watch the debate online. But a technical problem meant some were unable to log on to the broadcaster’s STV Player.  

David Mendels, the chief executive of Brightcove, STV’s technical partner for the broadcaster’s catch-up and streaming player, apologised for the “viewing issues”.

He said: “Our system is capable of significant scale, but in this case a manual configuration error resulted in the issues experienced by the public.

“We are proud of our long-standing partnership with STV and the quality of service we have been able to deliver so we are very disappointed by this error. We will work hard to ensure this never occurs again.”

According to STV, which is the Scottish holder of the ITV franchise, the debate on 5 August achieved an audience of 1.7m with a TV reach of 1.2m and over 500,000 online streams.

STV director of channels Bobby Hain added: “Now that we have identified the source of the issue on the STV livestream on Tuesday night, we welcome Brightcove’s commitment to ensure future service will be of a quality that STV and our viewers expect.”