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author | Thilo Borgmann <thilo.borgmann@mail.de> | 2016-04-10 18:18:17 +0200 |
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committer | Thilo Borgmann <thilo.borgmann@mail.de> | 2016-04-17 21:12:34 +0200 |
commit | 37a4d3383fb9deb8b94053195727ed0fe6406409 (patch) | |
tree | 3ff79b27ce769fdd02c5225f1779ebfff3bdb194 /doc | |
parent | d97a61a8f132e749f5b808300e126f9c0c3acfa1 (diff) | |
download | ffmpeg-streaming-37a4d3383fb9deb8b94053195727ed0fe6406409.zip ffmpeg-streaming-37a4d3383fb9deb8b94053195727ed0fe6406409.tar.gz |
lavfi/perspective: Add basic timeline editing.
Add number of input and output frames to possible variables.
Add option eval to reevaluate coordinate expressions during
initialization or for every frame.
Diffstat (limited to 'doc')
-rw-r--r-- | doc/filters.texi | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index b17b115..7634b25 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -10128,6 +10128,10 @@ The expressions can use the following variables: @item W @item H the width and height of video frame. +@item in +Input frame count. +@item on +Output frame count. @end table @item interpolation @@ -10158,6 +10162,21 @@ by the given coordinates. Default value is @samp{source}. @end table + +@item eval +Set when the expressions for coordinates @option{x0,y0,...x3,y3} are evaluated. + +It accepts the following values: +@table @samp +@item init +only evaluate expressions once during the filter initialization or +when a command is processed + +@item frame +evaluate expressions for each incoming frame +@end table + +Default value is @samp{init}. @end table @section phase |