sentences:  For example, a standard definition (SD) decoder accepts (composite or S-Video) that conforms to SD formats such as NTSC or PAL.High definition (HD) decoders accept analog HD formats such as AHD, HD-TVI, or HD-CVI.The output digital video may be formatted in various ways, such as 8-bit or 16-bit , 12-bit , BT.656 (SD) or BT.1120 (HD).