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doc/filters: itemize examples for *setpts filters

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Stefano Sabatini 2012-08-23 11:52:45 +02:00
parent 0043db2967
commit c45178cf5b
1 changed files with 25 additions and 7 deletions
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doc/filters.texi
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@ -4147,27 +4147,45 @@ previous output PTS
@end table
Some examples follow:
@subsection Examples
@itemize
@item
Start counting PTS from zero
@example
# start counting PTS from zero
setpts=PTS-STARTPTS
@end example
# fast motion
@item
Apply fast motion effect:
@example
setpts=0.5*PTS
@end example
# slow motion
@item
Apply slow motion effect:
@example
setpts=2.0*PTS
@end example
# fixed rate 25 fps
@item
Set fixed rate of 25 frames per second:
@example
setpts=N/(25*TB)
@end example
# fixed rate 25 fps with some jitter
@item
Set fixed rate 25 fps with some jitter:
@example
setpts='1/(25*TB) * (N + 0.05 * sin(N*2*PI/25))'
@end example
# apply an offset of 10 seconds to the input PTS
@item
Apply an offset of 10 seconds to the input PTS:
@example
setpts=PTS+10/TB
@end example
@end itemize
@section settb, asettb