AgoraIO · Cilla-luodan · Oct 25, 2024 · Oct 25, 2024 · Oct 25, 2024
diff --git a/en-US/dita/RTC-NG/API/api_imediaplayer_preloadsrc.dita b/en-US/dita/RTC-NG/API/api_imediaplayer_preloadsrc.dita
@@ -34,7 +34,8 @@
             <p props="native unreal bp rn electron">After calling this method, if you receive the <apiname keyref="PLAYER_PRELOAD_EVENT_COMPLETE" /> event in the <xref keyref="onPreloadEvent" /> callback, the preload is successful; If you receive the <apiname keyref="PLAYER_PRELOAD_EVENT_ERROR" /> event in the <xref keyref="onPreloadEvent" /> callback, the preload fails.</p>
             <p>If the preload is successful and you want to play the media resource, call <xref keyref="playPreloadedSrc" />; if you want to clear the playlist, call <xref keyref="stop" />.</p>
             <note type="note">
-            <p>Agora does not support preloading duplicate media resources to the playlist. However, you can preload the media resources that are being played to the playlist again.</p>
+            <ul><li>调用该方法前，请确保你已经调用 <xref keyref="open"/> 或 <xref keyref="openWithMediaSource"/> 成功打开媒体资源。</li>
+                <li>Agora does not support preloading duplicate media resources to the playlist. However, you can preload the media resources that are being played to the playlist again.</li></ul>
             </note> </section>
         <section id="parameters">
             <title>Parameters</title>

diff --git a/en-US/dita/RTC-NG/API/api_irtcengine_startscreencapture.dita b/en-US/dita/RTC-NG/API/api_irtcengine_startscreencapture.dita
@@ -73,7 +73,7 @@
                 <pt props="ios">parameters</pt>
                 <pt props="android hmos">screenCaptureParameters</pt>
                 <pt props="cpp unreal bp rn unity flutter">captureParams</pt>
-                <pd>The screen sharing encoding parameters. The default video dimension is 1920 x 1080, that is, 2,073,600 pixels. Agora uses the value of this parameter to calculate the charges. See <xref keyref="ScreenCaptureParameters2"/>.</pd>
+                <pd>The screen sharing encoding parameters. See <xref keyref="ScreenCaptureParameters2"/>.</pd>
             </plentry>
             </parml> </section>
         <section id="return_values">

diff --git a/en-US/dita/RTC-NG/API/api_irtcengine_updatescreencapture.dita b/en-US/dita/RTC-NG/API/api_irtcengine_updatescreencapture.dita
@@ -44,7 +44,7 @@
             <plentry>
                 <pt props="ios">parameters</pt>
                 <pt props="cpp unreal bp electron unity rn flutter cs">captureParams</pt>
-                <pd>The screen sharing encoding parameters. The default video resolution is 1920 × 1080, that is, 2,073,600 pixels. Agora uses the value of this parameter to calculate the charges. See <xref keyref="ScreenCaptureParameters2" />.</pd>
+                <pd>The screen sharing encoding parameters. See <xref keyref="ScreenCaptureParameters2" />.</pd>
             </plentry>
             </parml> </section>
         <section id="return_values">

diff --git a/en-US/dita/RTC-NG/API/api_irtcengine_updatescreencaptureparameters.dita b/en-US/dita/RTC-NG/API/api_irtcengine_updatescreencaptureparameters.dita
@@ -45,7 +45,7 @@
             <plentry>
                 <pt props="android hmos">screenCaptureParameters</pt>
                 <pt props="mac cpp unreal bp unity electron rn flutter cs">captureParams</pt>
-                <pd>The screen sharing encoding parameters. The default video resolution is 1920 × 1080, that is, 2,073,600 pixels. Agora uses the value of this parameter to calculate the charges. See <xref keyref="ScreenCaptureParameters" props="cpp unreal bp electron flutter mac unity cs" /><xref props="android ios" keyref="ScreenCaptureParameters2" />.<note type="attention">The video properties of the screen sharing stream only need to be set through this parameter, and are unrelated to <xref keyref="setVideoEncoderConfiguration"/>.</note>
+                <pd>The screen sharing encoding parameters. See <xref keyref="ScreenCaptureParameters" props="cpp unreal bp electron flutter mac unity cs" /><xref props="android ios" keyref="ScreenCaptureParameters2" />.<note type="attention">The video properties of the screen sharing stream only need to be set through this parameter, and are unrelated to <xref keyref="setVideoEncoderConfiguration"/>.</note>
                 </pd>
             </plentry>
             </parml> </section>

diff --git a/en-US/dita/RTC-NG/API/callback_irtcengineeventhandler_onnetworkquality.dita b/en-US/dita/RTC-NG/API/callback_irtcengineeventhandler_onnetworkquality.dita
@@ -47,7 +47,7 @@
             <p id="desc1">This callback reports the last mile network conditions of each user in the channel. Last mile refers to the connection between the local device and Agora's edge server.</p>
             <p id="desc2">The SDK triggers this callback once every two seconds. If a channel includes multiple users, the SDK triggers this callback as many times.</p>
             <p>This callback provides feedback on network quality through sending and receiving broadcast packets within the channel. Excessive broadcast packets can lead to broadcast storms. To prevent broadcast storms from causing a large amount of data transmission within the channel, this callback supports feedback on the network quality of up to 4 remote hosts simultaneously by default.</p>
-            <note type="note"><ph><parmname>txQuality</parmname> is <codeph props="cpp unreal bp android hmos unity">UNKNOWN</codeph><codeph props="ios mac electron rn">Unknown</codeph> when the user is not sending a stream; <parmname>rxQuality</parmname> is <codeph props="cpp unreal bp android hmos unity">UNKNOWN</codeph><codeph props="ios mac electron rn">Unknown</codeph> when the user is not receiving a stream.</ph></note> </section>
+            <note type="note"><ph><parmname>txQuality</parmname> is <codeph props="cpp unreal bp android hmos unity">UNKNOWN</codeph><codeph props="ios mac electron rn flutter">Unknown</codeph> when the user is not sending a stream; <parmname>rxQuality</parmname> is <codeph props="cpp unreal bp android hmos unity">UNKNOWN</codeph><codeph props="ios mac electron rn flutter">Unknown</codeph> when the user is not receiving a stream.</ph></note> </section>
         <section id="parameters">
             <title><ph keyref="callback-section-title" /></title>
             <parml>

diff --git a/en-US/dita/RTC-NG/API/rtc_api_overview.dita b/en-US/dita/RTC-NG/API/rtc_api_overview.dita
@@ -1658,7 +1658,7 @@
                 </strow>
             </simpletable>
         </section>
-        <section id="drm" props="native unreal unity flutter rn">
+        <section id="drm" props="android hmos ios cpp unreal unity flutter rn">
             <title><ph props="cn">DRM-protected music</ph></title>
             <p props="cpp unreal unity flutter"><ph props="cn">This group of methods is for Android and iOS only.</ph></p>
             <simpletable props="cn">