#23 RTL Support

open
nobody
None
5
2010-08-26
2010-08-26
No

When subtitling in Arabic punctuation marks positioned wrongly, and the whole line get messed if LTR (e.g. English) embedded within.
Hope to find solution soon.

Discussion

  • Liisachan

    Liisachan - 2010-08-26

    >When subtitling in Arabic punctuation marks positioned wrongly
    This problem may be solved by saving your subtitles in UTF-16 or UTF-8
    witht BOM, and placing an invisible control code called
    RLM (U+200F RIGHT-TO-LEFT MARK ) as the next (i.e. left) character
    of that punctuation (e.g. "!").
    It's true that general bidi is very hard to support and is
    poorly-supported.

    Some other problems, like ones related to "minor" Indic languages,
    may be solved by just placing a newer version of USP10.dll in the same
    directory as VSFilter.dll.

     
  • Majid Al-Dharrab

    The punctuations issue can be fixed with RLMs, but BiDi support in VSFilter.dll is almost absent. When adding LTR text in a RTL context, the line gets rearranged in a weird way. The same goes for SSA tags, which is quite irritating to work around. Also, having poor BiDi support results in making quick "bad" workarounds, which will not be displayed correctly when viewed on a platform other than Windows that has tools with better BiDi support. Is proper BiDi support planned for future releases?

     
  • Liisachan

    Liisachan - 2010-09-15

    If you (we) make sample files to demonstrate problems,
    and report problems to the mpc-hc project ( https://sourceforge.net/projects/mpc-hc/ ),
    they might eventually try to do something about them.
    In mpc-hc they're still developing VSFilter actively there.
    Here in Guliverkli2, development is rather passive, mostly based on patches
    provided by others...

     

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