SSA to Extended SRT

[Jedi_Vader20]

Does anyone know where I can find a converter that will take SSA input and output to SRT Extended, OR can direct me to a web page that has the SRT Extended spec?

I've timed a subtitle script in SubStation Alpha, got the positioning right, only to find that media players on other OS' than Windows have issues with SSA. INCLUDING VLC.

I have read that SRT Extended supports information regarding the positioning of the subtitles, BUT can find no information about how to go about doing it.

I would much rather do this manually, but can't find any pages detailing the Extended SRT spec.

Can anyone assist?

[unmei]

AFAIK not even "simple" SRT specs exist, so i doubt "extended" SRT has any specs.
That's why i would strongly disrecommend SRT for anything that has more that timestamps, plain text and at most some italic (<i>) tags.

But if you knew what you are going to need and are reasonably sure the players you target do all support these features, you can look at what programs generate.
For the position code, you can use SubRip. Set the text output format to SRT and check "extended format with picture coordinates". Then rip a few lines from a DVD and save it to see the synthax.
I could imagine subtitle workshop also supports some special codes for SRT.
I've seen <b>, <u> and <font color="#rrggbb"> in other places but i would not expect them to be supported by players.