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-rw-r--r--cmdutils.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/cmdutils.h b/cmdutils.h
index 90e0a25850..dcd0b79a1f 100644
--- a/cmdutils.h
+++ b/cmdutils.h
@@ -150,6 +150,12 @@ void parse_options(int argc, char **argv, const OptionDef *options,
/**
* Filter out options for given codec.
+ *
+ * Create a new options dictionary containing only the options from
+ * opts which apply to the codec with ID codec_id.
+ *
+ * @param encoder if non-zero the codec is an encoder, otherwise is a decoder
+ * @return a pointer to the created dictionary
*/
AVDictionary *filter_codec_opts(AVDictionary *opts, enum CodecID codec_id, int encoder);