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       #Post#: 93--------------------------------------------------
       Difference between softsub hardsub
       By: saikyouzero21 Date: April 20, 2015, 9:04 pm
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       Hard (also known as hardsubs or open subtitles). The subtitle
       text is irreversibly merged in original video frames, thus this
       format of subtitles doesn't require any special equipment or
       software at all. Thus, very complex transition effects and
       animation can be implemented, such as karaoke song lyrics
       following, various colors, fonts, sizes, etc. However, these
       subtitles can't be turned off unless the original video is also
       included in the distribution, because they are just a part of
       original frame, and it's impossible to do several variants of
       subtitling, for example, in multiple languages.
       Prerendered subtitles are separate video frames that are
       overlaid on the original video stream while playing. Prerendered
       subtitles are used on DVD (though they are contained in the same
       file as video stream). Obviously, player is required to support
       such subtitles to display them, and it is possible to turn them
       off or have multiple languages subtitles and switch among them.
       On the other hand, subtitles are usually encoded as images with
       minimal bitrate and number of colors, thus they usually lack
       anti-aliasing font rasterization. Also, it is hard to change
       such subtitles, but special OCR software, such as SubRip exists
       to convert such subtitles to "soft" ones.
       Soft (also known as softsubs or closed subtitles) are separate
       instructions, usually a specially marked up text with time
       stamps to be displayed during playback. It requires player
       support and, moreover, there are multiple incompatible (but
       usually reciprocally convertible) subtitle file formats. It's
       relatively easy to create and change such subtitles, and thus
       it's frequently used for fansubs. Text rendering quality can
       vary depending on player, but, generally, it's higher than
       prerendered subtitles. Also, some formats introduce text
       encoding troubles for end-user, especially if very different
       languages are used simultaneously (for example, Latin and Asian
       scripts).
       Source(s):
       Wikipedia
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