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Differences Between H.261 and MPEG-1

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Differences Between H.261 and MPEG-1

  • H.261 only encodes video. MPEG-1 encodes video and audio.
  • MPEG-1 allows arbitrary sized video (multiples of 16), but H.261 only allows 352 x 288 and half that size.
  • H.261 only allows forward prediction. MPEG-1 has forward and backward prediction (B-pictures). D-pictures are also only in MPEG-1.

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