MicroDVD

From Aegisub Wiki

MicroDVD is a media player with its own subtitle format.

Website: http://www.tiasoft.de/mdvdp/index.htm

No longer a free download, it seems.

[edit] Subtitle format

Sample:

{1}{1}25.000
{2447}{2513}You should come to the Drama Club, too.
{2513}{2594}Yeah. The Drama Club is worried|that you haven't been coming.
{2603}{2675}I see. Sorry, I'll drop by next time.

(File was generated with Subtitle Workshop, first line might not be part of the format.)

Seems to be frame based.