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-rw-r--r--libavformat/avformat.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index d1d47631c0..51635c4b84 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1684,6 +1684,9 @@ int av_filename_number_test(const char *filename);
/**
* Generate an SDP for an RTP session.
*
+ * Note, this overwrites the id values of AVStreams in the muxer contexts
+ * for getting unique dynamic payload types.
+ *
* @param ac array of AVFormatContexts describing the RTP streams. If the
* array is composed by only one context, such context can contain
* multiple AVStreams (one AVStream per RTP stream). Otherwise,