Opened 9 years ago

#1812 new defect

ASS subtitles with VDPAU output are stretched horizontally

Reported by: hector@… Owned by: eugeni.stepanov@…
Priority: normal Component: libass
Version: HEAD Severity: normal
Keywords: Cc:
Blocked By: Blocking:
Reproduced by developer: Analyzed by developer:


When using the ASS subtitle engine (whether with styled subs or just plain subs), using -vo vdpau on a 16:9 screen with 4:3 content, subtitles are stretched horizontally when the video is fullscreened.

In other words, subtitles in windowed mode work fine (4:3 aspect), but in fullscreen mode the subtitle overlay appears horizontally stretched to cover the entire 16:9 field, while the video is correctly pillarboxed. The subtitle overlay should be pillarboxed just like the video, maintaining the same proportions that it has in windowed mode.

For some reason, maximizing (but not fullscreening) the window (which temporarily distorts the video), *then* turning on fullscreen works around the issue.

I have also tested this on a 16:10 screen, with similar results (the stretching is less severe since that's closer to 4:3)

Steps to reproduce:
1) Use a monitor with an aspect ratio that isn't 4:3
2) mplayer -ass -vo vdpau -fs <some 4:3 content with subtitles>

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