High-definition television (HDTV) is a new digital television broadcasting system with higher resolution than traditional television systems (standard-definition TV, or SDTV). HDTV is digitally broadcast; the earliest implementations used analog broadcasting, but today digital television (DTV) signals are used, requiring less bandwidth due to digital video compression.
Standard Frame
23.976 Hz film-looking frame rate compatible with NTSC clock speed standards
24 Hz international film and ATSC high definition material
25 Hz PAL, SECAM film, standard definition, and high definition material
29.97 Hz NTSC standard definition material
50 Hz PAL & SECAM high definition material
60 Hz ATSC high definition material
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