Sri Lanka's technological refutation of the authenticity of a video of Army (SLA) soldiers executing unarmed Tamil men broadcast by Channel 4 in August is based on a processed video-file taken from the broadcaster's website, rather than the original mobile phone footage, experts said. An analysis commissioned by US-based pressure group Tamils Against Genocide (TAG) of the original video distributed by Journalists for Democracy in Sri Lanka (JDS) and Sri Lanka's subsequent technological refutation says Colombo's experts looked "at a second generation transcoded video to derive erroneous conclusions."