TVNZ showed what sounds, from the description, a lot like what Danny saw. It was a video attributed to Al-Jazeera.
One female prisoner, four males. One of the men had his head lifted up from a bed - if you could call it that - where a moment earlier he had been briefly shown lying with what I would describe as a grimace of pain.
All the individuals were clearly identifiable, as were their injuries.
The accompanying soundtrack was in Arabic, with questions being asked of the prisoners as a microphone was thrust in their faces. Answers were drowned out by music and subtitles in Arabic appeared.
The footage then showed the bodies of some dead service people. It was not the most graphic I have ever seen, but it was bad enough. There were no close up views of execution style wounds.
The coverage ended with the TVNZ anchor stating that the rest of the video was too graphic to broadcast. The US-based British journalist to whom he spoke next, commented that what we had seen was a great deal more detailed and explicit than anything being broadcast in the US.