1080i (aka FHD an BT.709) is an abbreviation referrin tae a combination o frame resolution an scan teepe, in the domains o heich-defineetion televeesion an high-defineetion video. The term assumes a widescreen aspect ratio o 16:9 (a rectangular TV that is wider than it is taw), a spatial resolution o 1920 pixels × 1080 lines (2.1 megapixels), an a temporal resolution o 50 or 60 interlaced fields per seicont. This format is uised in the SMPTE 292M staundart.