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2 Commits

Author SHA1 Message Date
Stefano Sabatini
6b55aab01a lavfi: create buffer reference in filters which need to access the ref later 
Also add internal function ff_null_start_frame_keep_ref().

Fix crash when a following filter (e.g. settb) will unref the reference
passed by start_frame(), and then the reference is accessed in
end_frame() through inlink->cur_buf.
 2012-04-27 21:38:13 +02:00
Stefano Sabatini
409a3bda07 lavfi: add blackdetect filter 
Address trac ticket #901.
 2012-03-04 12:31:06 +01:00