ffmpeg: parameters for filter thread counts

Enables specifying how many threads are available to each filtergraph.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 10 insertions, 0 deletions

diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
index 47c8935fc6..fd8a0c1e59 100644
--- a/doc/ffmpeg.texi
+++ b/doc/ffmpeg.texi
@@ -415,6 +415,11 @@ This option is similar to @option{-filter}, the only difference is that its
 argument is the name of the file from which a filtergraph description is to be
 read.
 
+@item -filter_threads @var{nb_threads} (@emph{global})
+Defines how many threads are used to process a filter pipeline. Each pipeline
+will produce a thread pool with this many threads available for parallel processing.
+The default is the number of available CPUs.
+
 @item -pre[:@var{stream_specifier}] @var{preset_name} (@emph{output,per-stream})
 Specify the preset for matching stream(s).
 
@@ -1201,6 +1206,11 @@ To generate 5 seconds of pure red video using lavfi @code{color} source:
 ffmpeg -filter_complex 'color=c=red' -t 5 out.mkv
 @end example
 
+@item -filter_complex_threads @var{nb_threads} (@emph{global})
+Defines how many threads are used to process a filter_complex graph.
+Similar to filter_threads but used for @code{-filter_complex} graphs only.
+The default is the number of available CPUs.
+
 @item -lavfi @var{filtergraph} (@emph{global})
 Define a complex filtergraph, i.e. one with arbitrary number of inputs and/or
 outputs. Equivalent to @option{-filter_complex}.