I have tried to convert a pdf in tamil language using calibre. The conversion took place but the fonts are not in tamil. Is it possible to convert pdf in Tamil language to convert to epub? or Is there any other software in ubuntu for this purpose?
I had a similar problem and I solved it by including the fonts I needed in the epub version of the file. You can do this with Sigil, which is an epub editor. To see how to include custom fonts in your epub with Sigil see http://web.sigil.googlecode.com/git/files/OEBPS/Text/tutorial_embed_fonts.html. See also karel's very useful comment below.