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Improve global motion estimation

stickz1 requested to merge stickz1/SVT-AV1:warp-motion-sad into master

Description

This merge request replaces the custom global error metric with the sum of the absolute differences as mentioned in #2141. These changes came from @rachelbarker_at_google. I just backported them to SVT-AV1 from libaom. No cleanup is performed in this merge request. Only very basic testing with obj1-fast was performed, to ensure the videos encoded.

Author(s)

@stickz1

Performance impact

  • quality
  • memory
  • speed
  • 8 bit
  • 10 bit
  • N/A

Test set

  • obj-1-fast can be found here
  • other
  • N/A

Merge method

  • Allow the maintainer to squash and merge when PR is ready to create a 1-commit to the master branch. The maintainer will be able to fix typos / combine commit messages to create a more readable 1-commit message or use whatever is stated in the 'Description' section
  • I will clean up my commits and the maintainer shall use 'rebase and merge' to the master branch

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