mpv-player / mpv-player/mpv

Using any of the `autofit` options from the mpv console positions the window to the top left instead of center

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os:win
Dominant language
C
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Description

mpv Information
mpv v0.40.0-131-ga418d2163 Copyright © 2000-2025 mpv/MPlayer/mplayer2 projects
 built on Jun  7 2025 00:15:41
libplacebo version: v7.351.0 (v7.351.0-dirty)
FFmpeg version: N-119853-g869e288b3
FFmpeg library versions:
   libavcodec      62.3.101
   libavdevice     62.0.100
   libavfilter     11.0.100
   libavformat     62.0.102
   libavutil       60.3.100
   libswresample   6.0.100
   libswscale      9.0.100
Other Information
- Windows version: Windows 10 Pro 64-bit
- GPU model, driver and version: NVIDIA GeForce RTX 3060 Ti, driver ver. 576.52
- Source of mpv: shinchiro
- Latest known working version: Don't know
- Issue started after the following happened: Don't know
Reproduction Steps
  1. Open video file with mpv.
  2. Open console with `.
  3. Enter set autofit 100%x90%.
Expected Behavior

Calling set autofit 100%x90% (or autofit variants like autofit-larger and autofit-smaller) should resize the height to 90% if the video height is greater than that and position the window to the center of the previous window position.

Actual Behavior

Calling set autofit 100%x90% (or autofit variants like autofit-larger and autofit-smaller) resizes the height to 90% if the video height is greater than that and positions the window to the top-left of the previous window position.

Here's an example of why this is an issue:
I have in my mpv.conf

[landscape]
profile-cond=width>height
autofit-larger=100%x90%
[portrait]
profile-cond=width<=height
autofit-larger=100%x100%

Basically if a video is landscape, set the max window height to 90% of the screen. If it is portrait, let it display its full width and height.

When I play a video and go to fullscreen mode, once I play the next file in the folder (same resolution), then un-fullscreen, the window is suddenly in the top-left of the screen instead of where the mpv window previously was (usually center).

Log File

output.txt

Sample Files

No response

I carefully read all instruction and confirm that I did the following:
  • I tested with the latest mpv version to validate that the issue is not already fixed.
  • I provided all required information including system and mpv version.
  • I produced the log file with the exact same set of files, parameters, and conditions used in "Reproduction Steps", with the addition of --log-file=output.txt.
  • I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
  • I attached the full, untruncated log file.
  • I attached the backtrace in the case of a crash.

Contributor guide

No contributing guide indexed for this repository

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

Reproduce the issue from the mpv console by opening a video and setting autofit to 100%x90%, then trace the resize and window-position handling used by the autofit, autofit-larger, and autofit-smaller options. Done means resizing from the console preserves the previous window's centered position instead of moving it to the top-left, including the fullscreen and next-file scenario.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
desktop
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
52/100

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