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-rw-r--r--libavformat/avformat.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 0994c8075e..aa11cff2f3 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -198,6 +198,10 @@
* be set to the timebase that the caller desires to use for this stream (note
* that the timebase actually used by the muxer can be different, as will be
* described later).
+ * - It is advised to manually initialize only the relevant fields in
+ * AVCodecContext, rather than using @ref avcodec_copy_context() during
+ * remuxing: there is no guarantee that the codec context values remain valid
+ * for both input and output format contexts.
* - The caller may fill in additional information, such as @ref
* AVFormatContext.metadata "global" or @ref AVStream.metadata "per-stream"
* metadata, @ref AVFormatContext.chapters "chapters", @ref