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ass: fix aspect ratio computation.

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Nicolas George
2012-03-22 20:59:36 +01:00
parent c44417e15a
commit 247fbf071b
3 changed files with 16 additions and 16 deletions
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7
doc/filters.texi
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@@ -761,9 +761,10 @@ separated by ":".
A description of the accepted options follows.
@table @option
@item dar
Specifies the display aspect ratio adopted for rendering the
subtitles. Default value is "1.0".
@item original_size
Specifies the size of the original video, the video for which the ASS file
was composed. Due to a misdesign in ASS aspect ratio arithmetic, this is
necessary to correctly scale the fonts if the aspect ratio has been changed.
@end table
For example, to render the file @file{sub.ass} on top of the input