probably this is the reason, as my .sub is a simple text file. in the submux readme they say:
'The file format is similar to "PHILIPS SVCD DESIGNER 1.5 - 2.0 SUBTITLES FILE".'
it sounds familiar, but it seems i don't have the proper conversion tool. maestro makes .son with a lot of .bmp but it is not formated the same way as intended. i could reformat it but there is one more severe problem. when making the .bmp maestro 'killed' my cyrilic font and i was not able to find a way to make it read it properly.
it will be good if you can suggest something.
now i have one more idea. it will be much easier if it is possible to convert the extracted .mpg file to .avi (some divx format) and then mux the text .sub and make the new svcd with dvd2svcd? what do you think about this approach???