OSC playlist randomly changes size when clicking 'pl prev'/'pl next' buttons in OSC with '--force-window=yes'

[Coacher]

Hello.

mpv version and platform

Reproducible with mpv-0.2{1,2,3}.0 or mpv-git @ 9c90c90 on Gentoo amd64.

Reproduction steps

1. Open playlist with several files and make sure the video window is opened.
2. Click 'pl prev'/'pl next' buttons in OSC in the video window.

Expected behavior

Playback switches to the previous/next file and the displayed OSD has normal size.

Actual behavior

Playback switches to the previous/next file and the displayed OSD changes size from normal to huge at random.

Log file

mpv 0.23.0 logfile: http://sprunge.us/RiHS
mpv-git logile: http://sprunge.us/XKAZ
ffmpeg -f x11grab output: https://0x0.st/VoU.mp4

Please fix.

[Coacher]

Not reproducible when there is actual video.

[mc4man]

If scalefullscreen= & scaleforcedwindow= are the same value then you'd likely get consistent results, after that the results could be quite unexpected.
i'd think typically users would have scalefullscreen a lower value than scaleforcedwindow which produces poor results at times depending on values used.
The most unexpected is a high scalefullscreen with a low scaleforcedwindow which makes the playlist smaller the higher scalefullscreen goes and or the lower scaleforcedwindow goes.

Can't see why for audio only thru the pseudo-gui one would want to go fullscreen..

[Coacher]

@mc4man, this issue isn't about consistency, but about weird scaling glitches. See demo video in OP.

[mc4man]

As I said, (at least here), if those 2 scale values are equal or if scalefullscreen is higher than scaleforcedwindow than there aren't any 'glitches', i.e. the behavior is consistent. Maybe different in your environment or you didn't try. Is this useful behavior?, likely not.

…

On 01/29/2017 08:50 AM, Coacher wrote: @mc4man <https://github.com/mc4man>, this issue isn't about consistency, but about weird scaling glitches. See demo video in OP. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#4081 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AFr3WZEYOz1x9hXfX1LtjrRG_y3s2EG5ks5rXJkegaJpZM4LweGK>.

[Coacher]

@mc4man, I misunderstood your first comment.
Indeed, if I set scalewindowed, scalefullscreen, scaleforcedwindow to 1, then these glitches no longer happen. Default values cause these glitches though.

It would be nice to have non-problematic default values or fix the underlying bug.