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| author | Gyan Doshi <ffmpeg@gyani.pro> | 2021-06-16 15:42:15 +0530 |
|---|---|---|
| committer | Gyan Doshi <ffmpeg@gyani.pro> | 2021-06-16 15:43:10 +0530 |
| commit | 604924a069735f3f1fd56b5dd125e68d402f15ba (patch) | |
| tree | 5431465cdfa08e3400b50f0c99edb19d888e75c7 | |
| parent | fcb80aa289a5339353ca9b1f5b2591d0e6cc5f19 (diff) | |
doc/filters: document expr support in fps filter
Added in dd770883e976c91feeb8de58eacd97dfb4e8308e
| -rw-r--r-- | doc/filters.texi | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 78faf767cf..da8f7d7726 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -12334,7 +12334,27 @@ It accepts the following parameters: @table @option @item fps -The desired output frame rate. The default is @code{25}. +The desired output frame rate. It accepts expressions containing the following +constants: + +@table @samp +@item source_fps +The input's frame rate + +@item ntsc, qntsc, sntsc +NTSC frame rate of @code{30000/1001} + +@item pal, qpal, spal +PAL frame rate of @code{25.0} + +@item film +Film frame rate of @code{24.0} + +@item ntsc_film +NTSC-film frame rate of @code{24000/1001} +@end table + +The default is @code{25}. @item start_time Assume the first PTS should be the given value, in seconds. This allows for |