diff options
Diffstat (limited to 'doc/filters.texi')
| -rw-r--r-- | doc/filters.texi | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 6fd192c285..cba2697fb6 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -195,6 +195,10 @@ instance two input pads. The first output pad of split is labelled output pad of split is linked to the second input pad of overlay, which are both unlabelled. +In a filter description, if the input label of the first filter is not +specified, "in" is assumed; if the output label of the last filter is not +specified, "out" is assumed. + 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. |