the image and will destroy more information than necessary, and extra
pixels will slow things down on a large logo.
+@section repeatfields
+
+This filter uses the repeat_field flag from the Video ES headers and hard repeats
+fields based on its value.
+
@section rotate
Rotate video by an arbitrary angle expressed in radians.
@item stream_index, si
Set subtitles stream index. @code{subtitles} filter only.
+
+@item force_style
+Override default style or script info parameters of the subtitles. It accepts a
+string containing ASS style format @code{KEY=VALUE} couples separated by ",".
@end table
If the first key is not specified, it is assumed that the first value
subtitles=video.mkv:si=1
@end example
+To make the subtitles stream from @file{sub.srt} appear in transparent green
+@code{DejaVu Serif}, use:
+@example
+subtitles=sub.srt:force_style='FontName=DejaVu Serif,PrimaryColour=&HAA00FF00'
+@end example
+
@section super2xsai
Scale the input by 2x and smooth using the Super2xSaI (Scale and