BBC used to do this with their early implementations of iPlayer. It was very unpopular then because people had expensive bandwidth and the feature wasn't clear

BBC used to do this with their early implementations of iPlayer. It was very unpopular then because people had expensive bandwidth and the feature wasn't clearly described. https://en.wikipedia.org/wiki/BBC_iPlayer#'iPlayer_1.0' https://en.wikipedia.org/wiki/BBC_iPlayer#'iPlayer_1.0'