Issue with using --geometry when loading videos with different aspect ratios

[raziel711]

mpv Information

mpv v0.41.0-333-gb51131dff Copyright © 2000-2026 mpv/MPlayer/mplayer2 projects
 built on Mar 15 2026 18:02:55
libplacebo version: v7.362.0 (v7.360.0-11-g33b5dfa-dirty)
FFmpeg version: N-123498-g482395f83
FFmpeg library versions:
   libavcodec      62.29.100
   libavdevice     62.4.100
   libavfilter     11.15.101
   libavformat     62.13.101
   libavutil       60.29.100
   libswresample   6.4.100
   libswscale      9.7.100

Other Information

- Windows version: Version 10.0.26200.8037
- GPU model, driver and version: NVIDIA RTX A500 Laptop GPU, RTX Enterprise Driver 595.79
- Source of mpv: https://github.com/zhongfly/mpv-winbuild/releases
- Latest known working version: https://github.com/mpv-player/mpv/commit/3a09e793b9b99ab93d93781f6994ce14c28501f6
- Issue started after the following happened: The issue started happening after https://github.com/mpv-player/mpv/commit/fbdaddf9688c6f52e9f2d3d9cf7722d420669574

Reproduction Steps

1. Set geometry to a specific value such as 0:250
2. Start a video with an aspect ratio of 16:9.
3. Move the window to a new location different from the position set by geometry.
4. While the video is playing, load a new video with a different aspect ratio such as 4:3.

Expected Behavior

Before fbdaddf, when the mpv window was moved from the position set by geometry, it would remain at that position when new videos were loaded regardless of aspect ratio as shown here:

T26wi4hgGk.mp4

Actual Behavior

Now, the window only remains at the new position when videos of the same aspect ratio are loaded. If there is a change in the aspect ratio, the window automatically moves back to the position set by geometry:

MjW0JE9b5b.mp4

Log File

log.txt

Sample Files

Any video files should work as long as they have different aspect ratios.

I carefully read all instruction and confirm that I did the following:

• I tested and confirmed that the issue exists with the latest release version or newer.
• 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.

[kasper93]

This is consistent with geometry size, where it would be applied consistently with position, now. This works like on other platforms. Basically if geometry has valid xy postion it will be used.

I need to align with @Dudemanguy on this. Because it's unclear to me how this should interact with force-window-position option. Currently if geometry xy is valid it takes precedence.

[Dudemanguy]

Currently if geometry xy is valid it takes precedence.

That's how it works on X11 as well.

[kasper93]

Currently if geometry xy is valid it takes precedence.

That's how it works on X11 as well.

Indeed. This is common code in the vo_calc_window_geometry(). I consider the recent changes a bugfix for win32.

I guess --reset-on-next-file=geometry works for the usecases in OP. Though force-window-position is still bit confusing. Not sure if there is anything to change here, however.

[raziel711]

Is there a setting to restore the old behavior?

I admittedly have an unorthodox setup for watching windowed videos; I set geometry and autofit=960x540 in my conf so that the window automatically opens and only uses the left side of the screen, and if I've made a playlist with videos of differing resolutions or aspect ratios, the window will remain in roughly the same place.

If I need to move the window to a different position and am watching a series of videos with different aspect ratios, then ideally I would like to keep the window at that new position untill I close mpv instead of potentially having the window jumping back to the value set by geometry.

[kasper93]

Like mentioned before, --reset-on-next-file=geometry should work for you.

[raziel711]

Like mentioned before, --reset-on-next-file=geometry should work for you.

I would like the geometry value to be set only for the first video when mpv initially opens and then ignored when a new video is loaded. That way, if I move the window it will remain at that new location until I close mpv, like with what is shown in the first sample video in my opening post. With the current behavior, the geometry is reset on a change in aspect ratio, and with reset-on-next-file=geometry it will be reset every time.

[verygoodlee]

In fact, loading files with different aspect ratios is just one of the use cases, any operation that may change the aspect ratio can reproduce this issue, such as rotation or cropping, the --reset-on-next-file=geometry option obviously doesn‘t work in these cases.

[kasper93]

If that's such needed feature, this should be fixed by #17599