1 files changed, 7 insertions, 4 deletions
diff --git a/libaf/af.h b/libaf/af.h
index 4cf6dfa6d6..ba83f86c8e 100644
--- a/libaf/af.h
+++ b/libaf/af.h
@@ -124,10 +124,13 @@ typedef struct af_stream_s
    if necessary according to the values set in input and output. Input
    and output should contain the format of the current movie and the
    formate of the preferred output respectively. The function is
-   reentrant i.e. if called wit an already initialized stream the
-   stream will be reinitialized. The return value is 0 if success and
-   -1 if failure */
-int af_init(af_stream_t* s);
+   reentrant i.e. if called with an already initialized stream the
+   stream will be reinitialized. If the binary parameter
+   "force_output" is set, the output format will be converted to the
+   format given in "s", otherwise the output fromat in the last filter
+   will be copied "s". The return value is 0 if success and -1 if
+   failure */
+int af_init(af_stream_t* s, int force_output);
 
 // Uninit and remove all filters
 void af_uninit(af_stream_t* s);