> i believe you are confusing pixel with points here. if you pass 480 to autofit it opens a window which is exactly 480 pixel wide, that are 240 points.
> geometry and autofit also explicitly state pixel in the docs. so as it stands now the implementation is right from the description, but might be unexpected in the case mentioned.
That's not true. Scaled resolutions on macOS is not always 2x; there are five scaled settings in System Preferences on a 15'' Retina MBP. For instance, when I scale the 2880x1800 physical display to 1920x1200, I have to specify `--geometry=3840x2400` to fill the screen. There are not even that many pixels. See #4357 (a duplicate report) for details.
Regarding the log file: there are some suspicious looking options from my `mpv.conf` (I thought using a different `$HOME` would stop `mpv` from loading that; apparently not) but they don't make a difference. Here's another log file without loading that `mpv.conf`.
https://gist.githubusercontent.com/anonymous/990a66cd5b981ced88f7090aa005b4c2/raw/f4d9112b2ef664493db38146761ea6123efbb6aa/mpv-geometry=1920x1200.log
macOS HiDPI scaling regression since 7bddd3f (v0.25.0): --geometry wrongly scaled
=================================================================================
This is a regression due to 7bddd3fb4cdb111b047965fe9884af765c0ad2bb (supposed to address #4194), which first appeared in v0.25.0.
Previously, on a Retina Mac with a scaled resolution, `--geometry` would respect the scaled resolution; for instance, if the 2880x1800 physical display is scaled to 1920x1200, then `--geometry=1920x1200` would fill the screen. However, since 7bddd3fb4cdb111b047965fe9884af765c0ad2bb, `--geometry=1920x1200` only fills a 960x600 area, and one has to use `--geometry=3840x2400` to fill the screen. This is extremely weird because the display doesn't even have that many physical pixels. Also, turning `--hidpi-window-scale` on or off doesn't make a difference here.
### mpv version and platform
`0.25.0-7-g809d160c1` (since `git-7bddd3fb4`) on macOS 10.12.4.
Hardware: MacBookPro11,5, aka MacBook Pro (Retina, 15-inch, Mid 2015).
### Reproduction steps
1. Set screen resolution of the built-in display to scaled 1920x1200. (System Preferences -> Displays -> Display -> Scaled -> More Space).
2. `mpv --geometry=1920x1200 <video>`. Note that `--hidpi-window-scale` and `--no-hidpi-window-scale` have no visible effect here.
### Expected behavior
Video fills the 1920x1200 screen.
### Actual behavior
Video only fills a 960x600 area.
### Log file
https://gist.githubusercontent.com/anonymous/6702d705a088449992fd238f00503aa0/raw/8bcb1ec56ce17cc26807ec06558ce0e9dbe7f656/mpv-geometry=1920x1200.log
### Sample files
Any file.