---
libavcodec/avcodec.h | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 316d30a..84a6859 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1148,16 +1148,20 @@ typedef struct AVCodecContext {
/**
* picture width / height.
* - encoding: MUST be set by user.
- * - decoding: Set by libavcodec.
- * Note: For compatibility it is possible to set this instead of
- * coded_width/height before decoding.
+ * - decoding: May be set by the user before opening the decoder if known
e.g.
+ * from the container. Some decoders will require the
dimensions
+ * to be set by the caller. During decoding, the decoder may
+ * overwrite those values as required.
*/
int width, height;
/**
- * Bitstream width / height, may be different from width/height.
+ * Bitstream width / height, may be different from width/height e.g. when
+ * the decoded frame is cropped before being output.
* - encoding: unused
- * - decoding: Set by user before init if known. Codec should override /
dynamically change if needed.
+ * - decoding: May be set by the user before opening the decoder if known
+ * e.g. from the container. During decoding, the decoder may
+ * overwrite those values as required.
*/
int coded_width, coded_height;
--
1.7.10.4
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