[FFmpeg-cvslog] r23468 - trunk/libavformat/avformat.h

[mstorsjo]

Author: mstorsjo
Date: Fri Jun  4 15:52:45 2010
New Revision: 23468

Log:
metadata: mention how to remove tags.

Patch by Anton Khirnov, wyskas at gmail

Modified:
   trunk/libavformat/avformat.h

Modified: trunk/libavformat/avformat.h
==============================================================================
--- trunk/libavformat/avformat.h	Fri Jun  4 09:33:34 2010	(r23467)
+++ trunk/libavformat/avformat.h	Fri Jun  4 15:52:45 2010	(r23468)
@@ -153,7 +153,8 @@ attribute_deprecated int av_metadata_set
 /**
  * Sets the given tag in m, overwriting an existing tag.
  * @param key tag key to add to m (will be av_strduped depending on flags)
- * @param value tag value to add to m (will be av_strduped depending on flags)
+ * @param value tag value to add to m (will be av_strduped depending on flags).
+ *        Passing a NULL value will cause an existing tag to be deleted.
  * @return >= 0 on success otherwise an error code <0
  */
 int av_metadata_set2(AVMetadata **pm, const char *key, const char *value, int flags);