The best replacement for mpeg4 is avi.

The best alternatives to mpeg4 are rated as following:
★★★★★  avi
★★★★★  mp3
★★★★  mp4
★★★★  mpeg2
★★★  wmv
★★★  h.264
★★  h 264
★★  mjpeg
★★  mov
★★  divx
★  h264
★  avchd
★  x264
★  avc
★  xvid
★  quicktime
★  h264 which is better
  mpeg3
  mpeg
  m4v
  mov what is better
  xvid which is better
  h 264 quality
  avi better
  divx which is better
  h.263
  wmv better
  mpeg2 quality
  mpeg1
  mpeg2 which is better
  3gp
  mpeg 1

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Google Trends

Scale is based on the average worldwide traffic of mpeg4 in all years. Click on graph for more.
mpeg4
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