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doc/filters: consistently use '"' for quoting the drawtext arguments in examples
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@ -1476,7 +1476,7 @@ within the parameter list.
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@item
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Show the text at the center of the video frame:
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@example
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drawtext=fontsize=30:fontfile=FreeSerif.ttf:text='hello world':x=(w-text_w)/2:y=(h-text_h-line_h)/2"
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drawtext="fontsize=30:fontfile=FreeSerif.ttf:text='hello world':x=(w-text_w)/2:y=(h-text_h-line_h)/2"
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@end example
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@item
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@ -1484,20 +1484,20 @@ Show a text line sliding from right to left in the last row of the video
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frame. The file @file{LONG_LINE} is assumed to contain a single line
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with no newlines.
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@example
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drawtext=fontsize=15:fontfile=FreeSerif.ttf:text=LONG_LINE:y=h-line_h:x=-50*t
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drawtext="fontsize=15:fontfile=FreeSerif.ttf:text=LONG_LINE:y=h-line_h:x=-50*t"
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@end example
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@item
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Show the content of file @file{CREDITS} off the bottom of the frame and scroll up.
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@example
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drawtext=fontsize=20:fontfile=FreeSerif.ttf:textfile=CREDITS:y=h-20*t"
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drawtext="fontsize=20:fontfile=FreeSerif.ttf:textfile=CREDITS:y=h-20*t"
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@end example
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@item
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Draw a single green letter "g", at the center of the input video.
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The glyph baseline is placed at half screen height.
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@example
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drawtext=fontsize=60:fontfile=FreeSerif.ttf:fontcolor=green:text=g:x=(w-max_glyph_w)/2:y=h/2-ascent
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drawtext="fontsize=60:fontfile=FreeSerif.ttf:fontcolor=green:text=g:x=(w-max_glyph_w)/2:y=h/2-ascent"
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@end example
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@item
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