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An enlargement of a small section of a 1024x768 (VESA XGA) resolution image; the individual pixels are more visible in its scaled form than its normal resolution.A video scaler is a system that converts video signals from one display resolution to another; typically, scalers are used to convert a signal from a lower resolution (such as 480p standard definition) to a higher resolution (such as ...
Down conversion : Many graphic cards have output for standard-definition television. Here there is a conversion from computer graphical modes to TV standard formats. Other graphic cards lack an SDTV output, but their VGA outputs can still be connected to an SDTV through an external scan converter (pictured).
In the case of decreasing the pixel number (scaling down), this usually results in a visible quality loss. From the standpoint of digital signal processing, the scaling of raster graphics is a two-dimensional example of sample-rate conversion, the conversion of a discrete signal from a sampling rate (in this case, the local sampling rate) to ...
Scaling of a video signal to higher resolution; Up- and down-conversion of analog signals (heterodyning) Photon upconversion; Block upconverter
Video processing techniques are used in television sets, VCRs, DVDs, video codecs, video players, video scalers and other devices. For example—commonly only design and video processing is different in TV sets of different manufactures. [citation needed]
Video converters are computer programs that can change the storage format of digital video. They may recompress the video to another format in a process called transcoding , or may simply change the container format without changing the video format.