[fems]

At least since Eden and still active in latest nightly there are some bugs regarding rendering of subtitles in .ass format. If a subtitle line is currently displayed alongside other subs, when those subs disappear they drag along the first one also disappearing until another subtitle is shown.

Here's an example:

http://pastebin.com/zEevQxut

Save as .ass and play it alongside any video file. The first subtitle should be displayed for 10 seconds (0-10), but when the four "TEXT" lines between 2-3 seconds disappear they drag along that first line, disappearing without reason. When the next subtitle is displayed (5-6 sec) it appears and vanishes again. MPC-HC or VLC work as intended. This is clearly visible when a dialog line is rendered among multiple sign subtitles, usually in anime fansubs. The sample is edited from an mkv embedded .ass file, so it's not designed to fail.

There's also a bug in some missing precision when rendering, but less annoying. Looks like most subtitles disappear 1 or 2 frames too early. For example, when covering signs the subtitles are usually rendered correctly but disappear too soon, catching a glimpse of the underlying sign. In MPC-HC they're perfectly timed.

[fems]

According to this thread http://forum.xbmc.org/showthread.php?tid=136124 this issue is also present in MacOSX, so it's not a Windows problem, but missing from other libass based players. I've tested myself with VLC and MPlayer and the subtitles are correctly displayed.

Here's a log, but this can be reproduced in any XBMC installation:

http://www.xbmclogs.com/show.php?id=9326

[Memphiz]

Try the next nightliy build and see if everything is fine now

[fems]

Now the subtitles work as intended, thank you!

[vertimus]

My apologies for resurrecting an old thread, but this problem seems to have worsen in Frodo.

At least in Eden 11.0 Stable, the ASS subs with overlapping time frame will display (although not optimally, see: http://forum.xbmc.org/showthread.php?tid=136124 ). Whereas in Frodo 12.0 Stable, once any time frame overlap is encountered, all subtitles from that point on will remain on screen instead of disappearing. If I try to skip ahead, the subtitles will not be rendered altogether.

I have reverted back to Eden for the time being, but would really like to see this fixed in Frodo as I'd really much like to stay current!