Opened 5 years ago

Closed 4 years ago

#748 closed enhancement (fixed)

VTM 7.0 decoder slower than VTM 6.2 decoder

Reported by: fbossen Owned by:
Priority: minor Milestone: VTM-7.1
Component: VTM Version: VTM-7.0
Keywords: Cc: ksuehring, XiangLi, fbossen, jvet@…

Description

The VTM 7.0 decoder runs slower than the VTM 6.2 decoder, in particular for low resolutions.
The slowdown was traced to increased picture padding introduced for motion compensation for RPR support:
https://vcgit.hhi.fraunhofer.de/jvet/VVCSoftware_VTM/merge_requests/1048

Given that the maximum RPR downsampling ratio supported by the spec is 2x, it is suggested to use this 2x factor for padding (instead of 8x), and to remove the RPR 4x configuration file (since 4x downsampling is not supported by the spec).

Change history (2)

comment:2 Changed 4 years ago by ksuehring

  • Milestone set to VTM-7.1
  • Resolution set to fixed
  • Status changed from new to closed

The fix was merged. Further improvements would still be possible.

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