diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/filters.texi | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 2a089bef84..446e1243db 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -76,6 +76,12 @@ In a complete filterchain all the unlabelled filter input and output pads must be connected. A filtergraph is considered valid if all the filter input and output pads of all the filterchains are connected. +Libavfilter will automatically insert scale filters where format +conversion is required. It is possible to specify swscale flags +for those automatically inserted scalers by prepending +@code{sws_flags=@var{flags};} +to the filtergraph description. + Follows a BNF description for the filtergraph syntax: @example @var{NAME} ::= sequence of alphanumeric characters and '_' @@ -84,7 +90,7 @@ Follows a BNF description for the filtergraph syntax: @var{FILTER_ARGUMENTS} ::= sequence of chars (eventually quoted) @var{FILTER} ::= [@var{LINKNAMES}] @var{NAME} ["=" @var{ARGUMENTS}] [@var{LINKNAMES}] @var{FILTERCHAIN} ::= @var{FILTER} [,@var{FILTERCHAIN}] -@var{FILTERGRAPH} ::= @var{FILTERCHAIN} [;@var{FILTERGRAPH}] +@var{FILTERGRAPH} ::= [sws_flags=@var{flags};] @var{FILTERCHAIN} [;@var{FILTERGRAPH}] @end example @c man end FILTERGRAPH DESCRIPTION |