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Diffstat (limited to 'doc/filters.texi')
| -rw-r--r-- | doc/filters.texi | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 346c8317e4..f41adca3ee 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -17,9 +17,10 @@ output pads is called a "sink". @anchor{Filtergraph syntax} @section Filtergraph syntax -A filtergraph can be represented using a textual representation, which -is recognized by the @code{-vf} option of the ff* -tools, and by the @code{avfilter_graph_parse()} function defined in +A filtergraph can be represented using a textual representation, which is +recognized by the @option{-filter}/@option{-vf} and @option{-filter_complex} +options in @command{ffmpeg} and @option{-vf} in @command{ffplay}, and by the +@code{avfilter_graph_parse()}/@code{avfilter_graph_parse2()} function defined in @file{libavfilter/avfiltergraph.h}. A filterchain consists of a sequence of connected filters, each one @@ -2114,15 +2115,12 @@ Follow some examples: overlay=main_w-overlay_w-10:main_h-overlay_h-10 # insert a transparent PNG logo in the bottom left corner of the input -movie=logo.png [logo]; -[in][logo] overlay=10:main_h-overlay_h-10 [out] +ffmpeg -i input -i logo -filter_complex 'overlay=10:main_h-overlay_h-10' output # insert 2 different transparent PNG logos (second logo on bottom # right corner): -movie=logo1.png [logo1]; -movie=logo2.png [logo2]; -[in][logo1] overlay=10:H-h-10 [in+logo1]; -[in+logo1][logo2] overlay=W-w-10:H-h-10 [out] +ffmpeg -i input -i logo1 -i logo2 -filter_complex +'overlay=10:H-h-10,overlay=W-w-10:H-h-10' output # add a transparent color layer on top of the main video, # WxH specifies the size of the main input to the overlay filter |