diff --git a/multimedia/av_codec/native_avcodec_videodecoder.h b/multimedia/av_codec/native_avcodec_videodecoder.h
index 6c41bb59980a422c0a350c601ceae8221b1739b8..672b8db4dfbaa24e2148a4406dbb9b06a10aa929 100644
--- a/multimedia/av_codec/native_avcodec_videodecoder.h
+++ b/multimedia/av_codec/native_avcodec_videodecoder.h
@@ -30,7 +30,8 @@ typedef struct MediaKeySession MediaKeySession;
  * @brief Creates a video decoder instance from the mime type, which is recommended in most cases.
  * @syscap SystemCapability.Multimedia.Media.VideoDecoder
  * @param mime mime type description string, refer to {@link AVCODEC_MIME_TYPE}
- * @return Returns a Pointer to an OH_AVCodec instance
+ * @return Returns a Pointer to an OH_AVCodec instance.
+ * Return nullptr if memory ran out or the mime type is not supported.
  * @since 9
  * @version 1.0
  */
@@ -41,7 +42,8 @@ OH_AVCodec *OH_VideoDecoder_CreateByMime(const char *mime);
  * The premise of using this interface is to know the exact name of the decoder.
  * @syscap SystemCapability.Multimedia.Media.VideoDecoder
  * @param name video codec name
- * @return Returns a Pointer to an OH_AVCodec instance
+ * @return Returns a Pointer to an OH_AVCodec instance.
+ * Return nullptr if memory ran out or the decoder name is not supported.
  * @since 9
  * @version 1.0
  */
@@ -51,8 +53,12 @@ OH_AVCodec *OH_VideoDecoder_CreateByName(const char *name);
  * @brief Clear the internal resources of the decoder and destroy the decoder instance
  * @syscap SystemCapability.Multimedia.Media.VideoDecoder
  * @param codec Pointer to an OH_AVCodec instance
- * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * @return Returns AV_ERR_OK if succeed,
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, inner resource has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
  * @since 9
  * @version 1.0
  */
@@ -66,7 +72,12 @@ OH_AVErrCode OH_VideoDecoder_Destroy(OH_AVCodec *codec);
  * @param callback A collection of all callback functions, see {@link OH_AVCodecAsyncCallback}
  * @param userData User specific data
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, inner resource has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state, must be called before Prepare.
  * @deprecated since 11
  * @useinstead OH_VideoDecoder_RegisterCallback
  * @since 9
@@ -82,7 +93,12 @@ OH_AVErrCode OH_VideoDecoder_SetCallback(OH_AVCodec *codec, OH_AVCodecAsyncCallb
  * @param callback A collection of all callback functions, see {@link OH_AVCodecCallback}
  * @param userData User specific data
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, inner resource has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state, must be called before Prepare.
  * @since 11
  */
 OH_AVErrCode OH_VideoDecoder_RegisterCallback(OH_AVCodec *codec, OH_AVCodecCallback callback, void *userData);
@@ -94,7 +110,13 @@ OH_AVErrCode OH_VideoDecoder_RegisterCallback(OH_AVCodec *codec, OH_AVCodecCallb
  * @param codec Pointer to an OH_AVCodec instance
  * @param window A pointer to a OHNativeWindow instance, see {@link OHNativeWindow}
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, inner resource has already released.
+ * {@link AV_ERR_OPERATE_NOT_PERMIT}, not permit to call the interface in buffer mode.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -107,7 +129,12 @@ OH_AVErrCode OH_VideoDecoder_SetSurface(OH_AVCodec *codec, OHNativeWindow *windo
  * @param codec Pointer to an OH_AVCodec instance
  * @param format A pointer to an OH_AVFormat to give the description of the video track to be decoded
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid. Invalid param in format.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state, must be called before Prepare.
  * @since 9
  * @version 1.0
  */
@@ -119,7 +146,12 @@ OH_AVErrCode OH_VideoDecoder_Configure(OH_AVCodec *codec, OH_AVFormat *format);
  * @syscap SystemCapability.Multimedia.Media.VideoDecoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -131,7 +163,12 @@ OH_AVErrCode OH_VideoDecoder_Prepare(OH_AVCodec *codec);
  * @syscap SystemCapability.Multimedia.Media.VideoDecoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -143,7 +180,12 @@ OH_AVErrCode OH_VideoDecoder_Start(OH_AVCodec *codec);
  * @syscap SystemCapability.Multimedia.Media.VideoDecoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -156,7 +198,12 @@ OH_AVErrCode OH_VideoDecoder_Stop(OH_AVCodec *codec);
  * @syscap SystemCapability.Multimedia.Media.VideoDecoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -168,7 +215,12 @@ OH_AVErrCode OH_VideoDecoder_Flush(OH_AVCodec *codec);
  * @syscap SystemCapability.Multimedia.Media.VideoDecoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -180,7 +232,8 @@ OH_AVErrCode OH_VideoDecoder_Reset(OH_AVCodec *codec);
  * to be manually released by the caller.
  * @syscap SystemCapability.Multimedia.Media.VideoDecoder
  * @param codec Pointer to an OH_AVCodec instance
- * @return Returns a pointer to an OH_AVFormat instance
+ * @return Returns a pointer to an OH_AVFormat instance.
+ * Return nullptr if the decoder is nullptr or invaild.
  * @since 9
  * @version 1.0
  */
@@ -193,7 +246,12 @@ OH_AVFormat *OH_VideoDecoder_GetOutputDescription(OH_AVCodec *codec);
  * @param codec Pointer to an OH_AVCodec instance
  * @param format pointer to an OH_AVFormat instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid. Invalid param in format.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -211,7 +269,13 @@ OH_AVErrCode OH_VideoDecoder_SetParameter(OH_AVCodec *codec, OH_AVFormat *format
  * @param index Enter the index value corresponding to the Buffer
  * @param attr Information describing the data contained in the Buffer
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * Buffer index should be given by {@link OH_AVCodecOnNeedInputData}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @deprecated since 11
  * @useinstead OH_VideoDecoder_PushInputBuffer
  * @since 9
@@ -227,7 +291,13 @@ OH_AVErrCode OH_VideoDecoder_PushInputData(OH_AVCodec *codec, uint32_t index, OH
  * @param codec Pointer to an OH_AVCodec instance
  * @param index The index value corresponding to the output Buffer
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * Buffer index should be given by {@link OH_AVCodecOnNewOutputData}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @deprecated since 11
  * @useinstead OH_VideoDecoder_RenderOutputBuffer
  * @since 9
@@ -241,7 +311,13 @@ OH_AVErrCode OH_VideoDecoder_RenderOutputData(OH_AVCodec *codec, uint32_t index)
  * @param codec Pointer to an OH_AVCodec instance
  * @param index The index value corresponding to the output Buffer
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * Buffer index should be given by {@link OH_AVCodecOnNewOutputData}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @deprecated since 11
  * @useinstead OH_VideoDecoder_FreeOutputBuffer
  * @since 9
@@ -260,7 +336,13 @@ OH_AVErrCode OH_VideoDecoder_FreeOutputData(OH_AVCodec *codec, uint32_t index);
  * @param codec Pointer to an OH_AVCodec instance
  * @param index The index of the input buffer.
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * Buffer index should be given by {@link OH_AVCodecOnNeedInputBuffer}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 11
  */
 OH_AVErrCode OH_VideoDecoder_PushInputBuffer(OH_AVCodec *codec, uint32_t index);
@@ -272,8 +354,14 @@ OH_AVErrCode OH_VideoDecoder_PushInputBuffer(OH_AVCodec *codec, uint32_t index);
  * @syscap SystemCapability.Multimedia.Media.VideoDecoder
  * @param codec Pointer to an OH_AVCodec instance
  * @param index The index value corresponding to the output Buffer
- * @return Returns AV_ERR_OK if the execution is successful, otherwise returns a specific error code, refer to {@link
- * OH_AVErrCode}
+ * @return Returns AV_ERR_OK if the execution is successful,
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * Buffer index should be given by {@link OH_AVCodecOnNewOutputBuffer}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 11
  */
 OH_AVErrCode OH_VideoDecoder_RenderOutputBuffer(OH_AVCodec *codec, uint32_t index);
@@ -284,7 +372,13 @@ OH_AVErrCode OH_VideoDecoder_RenderOutputBuffer(OH_AVCodec *codec, uint32_t inde
  * @param codec Pointer to an OH_AVCodec instance
  * @param index The index value corresponding to the output Buffer
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * Buffer index should be given by {@link OH_AVCodecOnNewOutputBuffer}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 11
  */
 OH_AVErrCode OH_VideoDecoder_FreeOutputBuffer(OH_AVCodec *codec, uint32_t index);
@@ -297,7 +391,11 @@ OH_AVErrCode OH_VideoDecoder_FreeOutputBuffer(OH_AVCodec *codec, uint32_t index)
  * @param isValid Output parameter. A pointer to a boolean instance, it is true if the codec instance is valid,
  * false if the codec instance is invalid
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the decoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
  * @since 10
  */
 OH_AVErrCode OH_VideoDecoder_IsValid(OH_AVCodec *codec, bool *isValid);
@@ -309,8 +407,11 @@ OH_AVErrCode OH_VideoDecoder_IsValid(OH_AVCodec *codec, bool *isValid);
  * @param codec Pointer to an OH_AVCodec instance
  * @param mediaKeySession A media key session instance with decryption function.
  * @param secureVideoPath Require secure decoder or not.
- * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * @return {@link AV_ERR_OK} 0 - Success
+ *         {@link AV_ERR_OPERATE_NOT_PERMIT} 2 - If the codec service or the media key session
+ *         service is in wrong status.
+ *         {@link AV_ERR_INVALID_VAL} 3 - If the codec instance is nullptr or invalid,
+ *         the mediaKeySession is nullptr or invalid.
  * @since 11
  * @version 1.0
 */
diff --git a/multimedia/av_codec/native_avcodec_videoencoder.h b/multimedia/av_codec/native_avcodec_videoencoder.h
index 5d51db899ce7ea39023f24b885814643d356d963..9ac83852f148fe921fb69be13ffd54952f1953d5 100644
--- a/multimedia/av_codec/native_avcodec_videoencoder.h
+++ b/multimedia/av_codec/native_avcodec_videoencoder.h
@@ -43,7 +43,8 @@ typedef void (*OH_VideoEncoder_OnNeedInputParameter)(OH_AVCodec *codec, uint32_t
  * @brief Creates a video encoder instance from the mime type, which is recommended in most cases.
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param mime mime type description string, refer to {@link AVCODEC_MIME_TYPE}
- * @return Returns a Pointer to an OH_AVCodec instance
+ * @return Returns a Pointer to an OH_AVCodec instance.
+ * Return nullptr if memory ran out or the mime type is not supported.
  * @since 9
  * @version 1.0
  */
@@ -54,7 +55,8 @@ OH_AVCodec *OH_VideoEncoder_CreateByMime(const char *mime);
  * know the exact name of the encoder.
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param name Video encoder name
- * @return Returns a Pointer to an OH_AVCodec instance
+ * @return Returns a Pointer to an OH_AVCodec instance.
+ * Return nullptr if memory ran out or the encoder name is not supported.
  * @since 9
  * @version 1.0
  */
@@ -65,7 +67,11 @@ OH_AVCodec *OH_VideoEncoder_CreateByName(const char *name);
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, inner resource has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
  * @since 9
  * @version 1.0
  */
@@ -79,7 +85,12 @@ OH_AVErrCode OH_VideoEncoder_Destroy(OH_AVCodec *codec);
  * @param callback A collection of all callback functions, see {@link OH_AVCodecAsyncCallback}
  * @param userData User specific data
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, inner resource has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state, must be called before Prepare.
  * @deprecated since 11
  * @useinstead OH_VideoEncoder_RegisterCallback
  * @since 9
@@ -94,8 +105,13 @@ OH_AVErrCode OH_VideoEncoder_SetCallback(OH_AVCodec *codec, OH_AVCodecAsyncCallb
  * @param codec Pointer to an OH_AVCodec instance
  * @param callback A collection of all callback functions, see {@link OH_AVCodecCallback}
  * @param userData User specific data
- * @return Returns AV_ERR_OK if the execution is successful, otherwise returns a specific error code, refer to {@link
- * OH_AVErrCode}
+ * @return Returns AV_ERR_OK if the execution is successful,
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, inner resource has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state, must be called before Prepare.
  * @since 11
  */
 OH_AVErrCode OH_VideoEncoder_RegisterCallback(OH_AVCodec *codec, OH_AVCodecCallback callback, void *userData);
@@ -109,8 +125,13 @@ OH_AVErrCode OH_VideoEncoder_RegisterCallback(OH_AVCodec *codec, OH_AVCodecCallb
  * @param codec Pointer to an OH_AVCodec instance
  * @param onInputParameter A callback functions, see {@link OH_VideoEncoder_OnNeedInputParameter}
  * @param userData User specific data
- * @return Returns AV_ERR_OK if the execution is successful, otherwise returns a specific error code, refer to {@link
- * OH_AVErrCode}
+ * @return Returns AV_ERR_OK if the execution is successful,
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, inner resource has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state, must be called before Prepare.
  * @since 12
  */
 OH_AVErrCode OH_VideoEncoder_RegisterParameterCallback(OH_AVCodec *codec,
@@ -124,7 +145,12 @@ OH_AVErrCode OH_VideoEncoder_RegisterParameterCallback(OH_AVCodec *codec,
  * @param codec Pointer to an OH_AVCodec instance
  * @param format A pointer to an OH_AVFormat that gives the description of the video track to be encoded
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid. Invalid param in format.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state, must be called before Prepare.
  * @since 9
  * @version 1.0
  */
@@ -136,7 +162,12 @@ OH_AVErrCode OH_VideoEncoder_Configure(OH_AVCodec *codec, OH_AVFormat *format);
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -148,7 +179,12 @@ OH_AVErrCode OH_VideoEncoder_Prepare(OH_AVCodec *codec);
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -159,7 +195,12 @@ OH_AVErrCode OH_VideoEncoder_Start(OH_AVCodec *codec);
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -172,7 +213,12 @@ OH_AVErrCode OH_VideoEncoder_Stop(OH_AVCodec *codec);
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -184,7 +230,12 @@ OH_AVErrCode OH_VideoEncoder_Flush(OH_AVCodec *codec);
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -196,7 +247,8 @@ OH_AVErrCode OH_VideoEncoder_Reset(OH_AVCodec *codec);
  * be manually released by the caller.
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param codec Pointer to an OH_AVCodec instance
- * @return Returns a pointer to an OH_AVFormat instance
+ * @return Returns a pointer to an OH_AVFormat instance.
+ * Return nullptr if the codec is nullptr or invaild.
  * @since 9
  * @version 1.0
  */
@@ -209,7 +261,12 @@ OH_AVFormat *OH_VideoEncoder_GetOutputDescription(OH_AVCodec *codec);
  * @param codec Pointer to an OH_AVCodec instance
  * @param format OH_AVFormat handle pointer
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid. Invalid param in format.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -222,7 +279,12 @@ OH_AVErrCode OH_VideoEncoder_SetParameter(OH_AVCodec *codec, OH_AVFormat *format
  * @param window A pointer to a OHNativeWindow instance, see {@link OHNativeWindow}, the application is responsible for
  * managing the life cycle of the window, call OH_NativeWindow_DestroyNativeWindow() when done.
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, inner resource has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -234,7 +296,13 @@ OH_AVErrCode OH_VideoEncoder_GetSurface(OH_AVCodec *codec, OHNativeWindow **wind
  * @param codec Pointer to an OH_AVCodec instance
  * @param index The index value corresponding to the output Buffer
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * Buffer index should be given by {@link OH_AVCodecOnNewOutputData}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @deprecated since 11
  * @useinstead OH_VideoEncoder_FreeOutputBuffer
  * @since 9
@@ -248,7 +316,12 @@ OH_AVErrCode OH_VideoEncoder_FreeOutputData(OH_AVCodec *codec, uint32_t index);
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param codec Pointer to an OH_AVCodec instance
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 9
  * @version 1.0
  */
@@ -261,7 +334,13 @@ OH_AVErrCode OH_VideoEncoder_NotifyEndOfStream(OH_AVCodec *codec);
  * @param index Enter the index value corresponding to the Buffer
  * @param attr Information describing the data contained in the Buffer
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * Buffer index should be given by {@link OH_AVCodecOnNeedInputData}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @deprecated since 11
  * @useinstead OH_VideoEncoder_PushInputBuffer
  * @since 10
@@ -274,7 +353,14 @@ OH_AVErrCode OH_VideoEncoder_PushInputData(OH_AVCodec *codec, uint32_t index, OH
  * @param codec Pointer to an OH_AVCodec instance
  * @param index Enter the index value corresponding to the Buffer
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * Buffer index should be given by {@link OH_AVCodecOnNeedInputBuffer}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
+
  * @since 11
  */
 OH_AVErrCode OH_VideoEncoder_PushInputBuffer(OH_AVCodec *codec, uint32_t index);
@@ -286,7 +372,13 @@ OH_AVErrCode OH_VideoEncoder_PushInputBuffer(OH_AVCodec *codec, uint32_t index);
  * @param codec Pointer to an OH_AVCodec instance
  * @param index Enter the index value corresponding to the input parameter
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * Index should be given by {@link OH_VideoEncoder_OnNeedInputParameter}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 12
  */
 OH_AVErrCode OH_VideoEncoder_PushInputParameter(OH_AVCodec *codec, uint32_t index);
@@ -297,7 +389,13 @@ OH_AVErrCode OH_VideoEncoder_PushInputParameter(OH_AVCodec *codec, uint32_t inde
  * @param codec Pointer to an OH_AVCodec instance
  * @param index The index value corresponding to the output Buffer
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * Buffer index should be given by {@link OH_AVCodecOnNewOutputBuffer}.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
+ * {@link AV_ERR_INVALID_STATE}, this interface was called in invalid state.
  * @since 11
  */
 OH_AVErrCode OH_VideoEncoder_FreeOutputBuffer(OH_AVCodec *codec, uint32_t index);
@@ -308,7 +406,8 @@ OH_AVErrCode OH_VideoEncoder_FreeOutputBuffer(OH_AVCodec *codec, uint32_t index)
  * instance pointed to by the return value needs to be manually released by the caller.
  * @syscap SystemCapability.Multimedia.Media.VideoEncoder
  * @param codec Pointer to an OH_AVCodec instance
- * @return Returns a pointer to an OH_AVFormat instance
+ * @return Returns a pointer to an OH_AVFormat instance.
+ * Return nullptr if the encoder is nullptr or invaild.
  * @since 10
  */
 OH_AVFormat *OH_VideoEncoder_GetInputDescription(OH_AVCodec *codec);
@@ -321,7 +420,11 @@ OH_AVFormat *OH_VideoEncoder_GetInputDescription(OH_AVCodec *codec);
  * @param isValid Output Parameter. A pointer to a boolean instance, it is true if the codec instance is valid,
  * false if the codec instance is invalid
  * @return Returns AV_ERR_OK if the execution is successful,
- * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ * otherwise returns a specific error code, refer to {@link OH_AVErrCode}.
+ * {@link AV_ERR_NO_MEMORY}, instance has already released.
+ * {@link AV_ERR_INVALID_VAL}, the encoder is nullptr or invalid.
+ * {@link AV_ERR_UNKNOWN}, unknown error.
+ * {@link AV_ERR_SERVICE_DIED}, avcodec service is died.
  * @since 10
  */
 OH_AVErrCode OH_VideoEncoder_IsValid(OH_AVCodec *codec, bool *isValid);
diff --git a/multimedia/av_codec/native_avdemuxer.h b/multimedia/av_codec/native_avdemuxer.h
index 84634687e987dbfa241f494a726351ff3fa3bbdf..60ce78a16bba94ee0fb9041b57e72a19cb4ed720 100644
--- a/multimedia/av_codec/native_avdemuxer.h
+++ b/multimedia/av_codec/native_avdemuxer.h
@@ -33,7 +33,9 @@ typedef void (*DRM_MediaKeySystemInfoCallback)(DRM_MediaKeySystemInfo* mediaKeyS
  * Free the resources of the instance by calling OH_AVDemuxer_Destroy.
  * @syscap SystemCapability.Multimedia.Media.Spliter
  * @param source Pointer to an OH_AVSource instance.
- * @return Returns a pointer to an OH_AVDemuxer instance
+ * @return Returns a pointer to an OH_AVDemuxer instance if the execution is successful, otherwise returns nullptr.
+ * Possible failure causes:
+ *  1. source is invalid.
  * @since 10
 */
 OH_AVDemuxer *OH_AVDemuxer_CreateWithSource(OH_AVSource *source);
@@ -47,6 +49,7 @@ OH_AVDemuxer *OH_AVDemuxer_CreateWithSource(OH_AVSource *source);
  * @param demuxer Pointer to an OH_AVDemuxer instance.
  * @return Returns AV_ERR_OK if the execution is successful,
  * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ *          {@link AV_ERR_INVALID_VAL} demuxer is invalid.
  * @since 10
 */
 OH_AVErrCode OH_AVDemuxer_Destroy(OH_AVDemuxer *demuxer);
@@ -62,6 +65,8 @@ OH_AVErrCode OH_AVDemuxer_Destroy(OH_AVDemuxer *demuxer);
  * @param trackIndex The index of the selected track.
  * @return Returns AV_ERR_OK if the execution is successful,
  * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ *          {@link AV_ERR_INVALID_VAL} demuxer is invalid, demuxer is not properly initialized,
+ *                                     trackIndex is out of range, track is not supported to be read.
  * @since 10
 */
 OH_AVErrCode OH_AVDemuxer_SelectTrackByID(OH_AVDemuxer *demuxer, uint32_t trackIndex);
@@ -77,6 +82,7 @@ OH_AVErrCode OH_AVDemuxer_SelectTrackByID(OH_AVDemuxer *demuxer, uint32_t trackI
  * @param trackIndex The index of the unselected track.
  * @return Returns AV_ERR_OK if the execution is successful,
  * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ *          {@link AV_ERR_INVALID_VAL} demuxer is invalid, demuxer is not properly initialized.
  * @since 10
 */
 OH_AVErrCode OH_AVDemuxer_UnselectTrackByID(OH_AVDemuxer *demuxer, uint32_t trackIndex);
@@ -92,6 +98,11 @@ OH_AVErrCode OH_AVDemuxer_UnselectTrackByID(OH_AVDemuxer *demuxer, uint32_t trac
  * @param info The OH_AVCodecBufferAttr handle pointer to the buffer storing sample information.
  * @return Returns AV_ERR_OK if the execution is successful,
  * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ *          {@link AV_ERR_INVALID_VAL} demuxer is invalid, demuxer is not properly initialized, sample is invalid,
+ *                                     trackIndex is out of range.
+ *          {@link AV_ERR_OPERATE_NOT_PERMIT} trackIndex has not been selected.
+ *          {@link AV_ERR_NO_MEMORY} capability of sample is not enough to store all frame data.
+ *          {@link AV_ERR_UNKNOWN} failed to read or parse frame from file.
  * @deprecated since 11
  * @useinstead OH_AVDemuxer_ReadSampleBuffer
  * @since 10
@@ -109,6 +120,11 @@ OH_AVErrCode OH_AVDemuxer_ReadSample(OH_AVDemuxer *demuxer, uint32_t trackIndex,
  * @param sample The OH_AVBuffer handle pointer to the buffer storing the sample data and corresponding attribute.
  * @return Returns AV_ERR_OK if the execution is successful,
  * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ *          {@link AV_ERR_INVALID_VAL} demuxer is invalid, demuxer is not properly initialized, sample is invalid,
+ *                                     trackIndex is out of range.
+ *          {@link AV_ERR_OPERATE_NOT_PERMIT} trackIndex has not been selected.
+ *          {@link AV_ERR_NO_MEMORY} capability of sample is not enough to store frame data.
+ *          {@link AV_ERR_UNKNOWN} failed to read or parse frame from file.
  * @since 11
 */
 OH_AVErrCode OH_AVDemuxer_ReadSampleBuffer(OH_AVDemuxer *demuxer, uint32_t trackIndex,
@@ -123,6 +139,10 @@ OH_AVErrCode OH_AVDemuxer_ReadSampleBuffer(OH_AVDemuxer *demuxer, uint32_t track
  * @param mode The mode for seeking. See {@link OH_AVSeekMode}.
  * @return Returns AV_ERR_OK if the execution is successful,
  * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ *          {@link AV_ERR_INVALID_VAL} demuxer is invalid, demuxer is not properly initialized,
+ *                                     millisecond is out of range.
+ *          {@link AV_ERR_OPERATE_NOT_PERMIT} trackIndex has not been selected, resource is unseekable.
+ *          {@link AV_ERR_UNKNOWN} failed to seek.
  * @since 10
 */
 OH_AVErrCode OH_AVDemuxer_SeekToTime(OH_AVDemuxer *demuxer, int64_t millisecond, OH_AVSeekMode mode);
@@ -132,8 +152,9 @@ OH_AVErrCode OH_AVDemuxer_SeekToTime(OH_AVDemuxer *demuxer, int64_t millisecond,
  * @syscap SystemCapability.Multimedia.Media.Spliter
  * @param demuxer Pointer to an OH_AVDemuxer instance
  * @param callback object pointer.
- * @return Returns {@link AV_ERR_OK} if the drm info callback is set; returns an error code defined
- * in {@link native_averrors.h} otherwise.
+ * @return {@link AV_ERR_OK} 0 - Success
+ *         {@link AV_ERR_OPERATE_NOT_PERMIT} 2 - If the demuxer engine is not inited or init failed.
+ *         {@link AV_ERR_INVALID_VAL} 3 - If the demuxer instance is nullptr or invalid.
  * @since 11
  * @version 1.0
  */
@@ -145,9 +166,10 @@ OH_AVErrCode OH_AVDemuxer_SetMediaKeySystemInfoCallback(OH_AVDemuxer *demuxer,
  * @syscap SystemCapability.Multimedia.Media.Spliter
  * @param demuxer Pointer to an OH_AVDemuxer instance
  * @param mediaKeySystemInfo Indicates the media key system info which ram space allocated by callee and
- released by caller.
- * @return Returns {@link AV_ERR_OK} if the current position is get; returns an error code defined
- * in {@link native_averrors.h} otherwise.
+ * released by caller.
+ * @return {@link AV_ERR_OK} 0 - Success
+ *         {@link AV_ERR_INVALID_VAL} 3 - If the demuxer instance is nullptr or invalid
+ *          or the mediaKeySystemInfo is nullptr.
  * @since 11
  * @version 1.0
  */
diff --git a/multimedia/av_codec/native_avsource.h b/multimedia/av_codec/native_avsource.h
index a211d69505c24d16544741600e1b25bb0bc90293..cacdefb13ad9d293fabbfcdc3a9e6987f982bdc8 100644
--- a/multimedia/av_codec/native_avsource.h
+++ b/multimedia/av_codec/native_avsource.h
@@ -31,7 +31,13 @@ typedef struct OH_AVSource OH_AVSource;
  * @brief Creates an OH_AVSource instance that models the media with dataSource.
  * @syscap SystemCapability.Multimedia.Media.Spliter
  * @param dataSource An Struct for a remote media resource.
- * @return Returns a pointer to an OH_AVSource instance
+ * @return Returns a pointer to an OH_AVSource instance if the execution is successful, otherwise returns nullptr.
+ * Possible failure causes:
+ *  1. dataSource is nullptr.
+ *  2. dataSource->size == 0.
+ *  3. set data source failed.
+ *  4. out of memory.
+ *  5. demuxer engine is nullptr.
  * @since 12
 */
 OH_AVSource *OH_AVSource_CreateWithDataSource(OH_AVDataSource *dataSource);
@@ -40,7 +46,11 @@ OH_AVSource *OH_AVSource_CreateWithDataSource(OH_AVDataSource *dataSource);
  * @brief Creates an OH_AVSource instance that models the media at the URI.
  * @syscap SystemCapability.Multimedia.Media.Spliter
  * @param uri An URI for a remote media resource.
- * @return Returns a pointer to an OH_AVSource instance
+ * @return Returns a pointer to an OH_AVSource instance if the execution is successful, otherwise returns nullptr.
+ * Possible failure causes:
+ *  1. network anomaly.
+ *  2. resource is invalid.
+ *  3. file format is not supported.
  * @since 10
 */
 OH_AVSource *OH_AVSource_CreateWithURI(char *uri);
@@ -51,7 +61,13 @@ OH_AVSource *OH_AVSource_CreateWithURI(char *uri);
  * @param fd The fileDescriptor of data source.
  * @param offset The offset into the file to start reading.
  * @param size The file size in bytes.
- * @return Returns a pointer to an OH_AVSource instance
+ * @return Returns a pointer to an OH_AVSource instance if the execution is successful, otherwise returns nullptr.
+ * Possible failure causes:
+ *  1. fd is invalid.
+ *  2. offset is not start pos of resource.
+ *  3. size error.
+ *  4. resource is invalid.
+ *  5. file format is not supported.
  * @since 10
 */
 OH_AVSource *OH_AVSource_CreateWithFD(int32_t fd, int64_t offset, int64_t size);
@@ -62,6 +78,7 @@ OH_AVSource *OH_AVSource_CreateWithFD(int32_t fd, int64_t offset, int64_t size);
  * @param source Pointer to an OH_AVSource instance.
  * @return Returns AV_ERR_OK if the execution is successful,
  * otherwise returns a specific error code, refer to {@link OH_AVErrCode}
+ *          {@link AV_ERR_INVALID_VAL} source is invalid.
  * @since 10
 */
 OH_AVErrCode OH_AVSource_Destroy(OH_AVSource *source);
@@ -70,7 +87,9 @@ OH_AVErrCode OH_AVSource_Destroy(OH_AVSource *source);
  * @brief Get the format info of source.
  * @syscap SystemCapability.Multimedia.Media.Spliter
  * @param source Pointer to an OH_AVSource instance.
- * @return Returns the source's format info.
+ * @return Returns the source's format info if the execution is successful, otherwise returns nullptr.
+ * Possible failure causes:
+ *  1. source is invalid.
  * @since 10
 */
 OH_AVFormat *OH_AVSource_GetSourceFormat(OH_AVSource *source);
@@ -80,7 +99,10 @@ OH_AVFormat *OH_AVSource_GetSourceFormat(OH_AVSource *source);
  * @syscap SystemCapability.Multimedia.Media.Spliter
  * @param source Pointer to an OH_AVSource instance.
  * @param trackIndex The track index to get format.
- * @return Returns the track's format info.
+ * @return Returns the track's format info if the execution is successful, otherwise returns nullptr.
+ * Possible failure causes:
+ *  1. source is invalid.
+ *  2. trackIndex is out of range.
  * @since 10
 */
 OH_AVFormat *OH_AVSource_GetTrackFormat(OH_AVSource *source, uint32_t trackIndex);