Originally Posted by Fintastic
The official term for this is normally "anamorphic widescreen". It's widely used in SD broadcasts especially in Europe, and also anamorphic widescreen DVDs since 1990s. And normally it DOES increase video information (in relation to 4:3 letterbox).
But after judging the video output quality from 808, I am wondering if they did this by letterboxing video first, then removing the letterbox and stretching the remaining information to fill the frame, which makes typically no sense whatsoever... (But perhaps it's the only way to implement this in firmware updates, I have no idea.) Of course the better way would be just outputting the original 16:9 video full frame in anamorphic widescreen ("stretched into 4:3" if you will, that's the observed effect).
Yes, of course, but if I called it anamorphic widescreen the vast majority of the thread readers here would have no idea what that is.
Any information increase from the camera's native 16:9 display has to be done either by using non-square pixels or interpolated (guessed at) information from the camera's native image. So there is no real additional image of the scene to be viewed... more data to be transmitted perhaps, but nothing new as far as more visible scene in the video.
I think the image in the video out 4:3 aspect ratio most likely IS anamorphic widescreen, but the video quality of the native image is vastly degraded by the conversion from the digital HD image into an analog composite video signal which the video out function uses. I say this because I can see no significant difference in the detail in the video out display between the 16:9 letter boxed display or the 4:3 full stretched version in the horizontal direction. The vertical stretching does add some vertical detail change due to the distortion of the image that is done to fill the frame.