mpv-player / mpv-player/mpv

Add new fixed parameter combinations for resampling algorithm

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meta:feature-request
Dominant language
C
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Description

Expected behavior of the wanted feature

I would like to respectfully suggest a new upscaling filter: ewa_hanning + scale-blur=0.9753886283057314, which I have been researching for quite some time. I was hoping it could be named ewa_hannsharp and added to both vo=gpu and vo=gpu-next.
The effect is: ringing ≈ ewa_hanning, sharpness ≈ ewa_lanczossharp. You can find the details and the reasoning behind it here: https://github.com/mpv-player/mpv/discussions/14325#discussioncomment-18051042.
I sincerely apologize for the interruption. I wasn't entirely sure if it was appropriate to just bring this up, so please excuse the intrusion. Thank you very much for your time.

Alternative behavior of the wanted feature

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Log File

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Sample Files

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Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading the linked discussion and tracing the resampling configuration entry points for vo=gpu and vo=gpu-next. Confirm how fixed filter and scale-blur combinations are represented, then verify that the proposed ewa_hannsharp combination is available in both backends with the requested value.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
computer-graphics
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
48/100

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