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It was approved in 1994 but in 1996 it was extended and was added another profile.


OVERVIEW


MPEG-2 Video is similar to MPEG-1, but also provides support for interlaced video (the format used by analog broadcast TV systems). MPEG-2 video is not optimized for low bit-rates (less than 1 Mbit/s), but outperforms MPEG-1 at 3 Mbit/s and above. All standards-conforming MPEG-2 Video decoders are fully capable of playing back MPEG-1 Video streams.


FEATURES



PROFILES AND LEVELS



APPLICATIONS


DVD

The DVD standard uses MPEG-2 video, but imposes some restrictions:
  • Allowed Resolutions

  • --- 720 × 480, 704 × 480, 352 × 480, 352 × 240 pixel (NTSC)

  • --- 720 × 576, 704 × 576, 352 × 576, 352 × 288 pixel (PAL)

  • Allowed Aspect Ratio (image) (Display AR)

  • --- 4:3

  • --- 16:9

  • --- (1.85:1 and 2.35:1, among others, are often listed as valid DVD aspect ratios, but are actually just a 16:9 image with the top and bottom of the frame masked in black)

  • Allowed Frame rates

  • --- 29.97 frame/s (NTSC)

  • --- 25 frame/s (PAL)

  • --- 23.976 frame/s through use of 3:2 pulldown (FILM)

  • Audio+video bitrate

  • --- Video peak 9.8 Mb/s

  • --- Total peak 10.08 Mb/s

  • --- Minimum 300 kb/s


  • GOP structure

  • --- Sequence header must be present at the beginning of every GOP

  • --- Maximum frames per GOP: 18 (NTSC) / 15 (PAL), i.e. 0.6 seconds both

  • --- Closed GOP required for multiple-angle DVDs



HD-DVD & Blu-ray

The HD-DVD and Blu-ray Standarts use mpeg-2 video along with H.264/AVC and VC1 video standards.