In the UK PAL dvds are often claimed to be 576p, if NTSC dvd claims are like PALs then NTSC is probably not equivelent to 480p. Noise reduction in the dvd player may automatically reduce mosquito and blocking noise, but on discs that are properly encoded this is not needed and when done reduces image detail. Too low a bit rate for too much information leads to mosquito noise and blocking noise. On DVDs pre-smoothing - reducing the fine detail, is often done before encoding to reduce the mpeg bit rate. So detail resolution maybe less than detail resolution of computer graphics, or film/video from sources that have been downscaled to the same resolution. Not all dvd players are good at doing this interpolation.įilm and video is sampled then filtered at half the frequency of the sampling to prevent aliasing effects. The dvd player interpolats this up to the black and white images resolution. Color resolution on DVDs is normally half the vertical and half the horizontal resolution of the black and white image.
#Best dvd player for 720p tv 480p
A dvd player with a poor de-interlacer may bob and weave film sources reducing the visible fine detail.Ī 480p source may have color encoded at the same resolution as the black and white image. While a video sourced DVD deinterlaced relys on bobbing and weaving all the time. I think DVDs are Interlaced not Progressive, hence the need for deinterlacers, a good deinterlacer with a film sourced DVD should give more picture detail equal to Progressive most of the time.
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