RN/Electron: remove alpha buffer

markdown/RTC 4.x/release-notes/en-US/framework/release_electron_ng.md

@@ -24,21 +24,11 @@ This version includes optimizations to some features, including changes to SDK b
 
 #### New features
 
-1. **Alpha transparency effects**
-
-   This version introduces the Alpha transparency effects feature, supporting the transmission and rendering of Alpha channel data in video frames for SDK capture and custom capture scenarios, enabling transparent gift effects, custom backgrounds on the receiver end, etc.:
-
-   - `VideoFrame` and `ExternalVideoFrame` add the `alphaBuffer` member: Sets the Alpha channel data.
-   - `ExternalVideoFrame` adds the `fillAlphaBuffer` member: For BGRA or RGBA formatted video data, sets whether to automatically extract the Alpha channel data and fill it into `alphaBuffer`.
-   - `VideoFrame` and `ExternalVideoFrame` add the `alphaStitchMode` member: Sets the relative position of `alphaBuffer` and video frame stitching.
-
-   Additionally, `AdvanceOptions` adds a new member `encodeAlpha`, which is used to set whether to encode and send Alpha information to the remote end. By default, the SDK does not encode and send Alpha information; if you need to encode and send Alpha information to the remote end (for example, when virtual background is enabled), explicitly call `setVideoEncoderConfiguration` to set the video encoding properties and set `encodeAlpha` to `true`.
-
-2. **Voice AI tuner**
+1. **Voice AI tuner**
 
    This version introduces the voice AI tuner feature, which can enhance the sound quality and tone, similar to a physical sound card. You can enable the voice AI tuner feature by calling the `enableVoiceAITuner` method and passing in the sound effect types supported in the `VoiceAiTunerType`enum to achieve effects like deep voice, cute voice, husky singing voice, etc.
 
-3. **1v1 video call scenario**
+2. **1v1 video call scenario**
 
    This version adds `ApplicationScenario1v1`(1v1 video call) in `VideoApplicationScenarioType`. You can call `setVideoScenario` to set the video application scenario to 1v1 video call, the SDK optimizes performance to achieve low latency and high video quality, enhancing image quality, first frame rendering, latency on mid-to-low-end devices, and smoothness under poor network conditions.
 

markdown/RTC 4.x/release-notes/en-US/framework/release_rn_ng.md

@@ -34,21 +34,11 @@ This version includes optimizations to some features, including changes to SDK b
 
 #### New features
 
-1. **Alpha transparency effects**
-
-   This version introduces the Alpha transparency effects feature, supporting the transmission and rendering of Alpha channel data in video frames for SDK capture and custom capture scenarios, enabling transparent gift effects, custom backgrounds on the receiver end, etc.:
-
-   - `VideoFrame` and `ExternalVideoFrame` add the `alphaBuffer` member: Sets the Alpha channel data.
-   - `ExternalVideoFrame` adds the `fillAlphaBuffer` member: For BGRA or RGBA formatted video data, sets whether to automatically extract the Alpha channel data and fill it into `alphaBuffer`.
-   - `VideoFrame` and `ExternalVideoFrame` add the `alphaStitchMode` member: Sets the relative position of `alphaBuffer` and video frame stitching.
-
-   Additionally, `AdvanceOptions` adds a new member `encodeAlpha`, which is used to set whether to encode and send Alpha information to the remote end. By default, the SDK does not encode and send Alpha information; if you need to encode and send Alpha information to the remote end (for example, when virtual background is enabled), explicitly call `setVideoEncoderConfiguration` to set the video encoding properties and set `encodeAlpha` to `true`.
-
-2. **Voice AI tuner**
+1. **Voice AI tuner**
 
    This version introduces the voice AI tuner feature, which can enhance the sound quality and tone, similar to a physical sound card. You can enable the voice AI tuner feature by calling the `enableVoiceAITuner` method and passing in the sound effect types supported in the `VoiceAiTunerType`enum to achieve effects like deep voice, cute voice, husky singing voice, etc.
 
-3. **1v1 video call scenario**
+2. **1v1 video call scenario**
 
    This version adds `ApplicationScenario1v1`(1v1 video call) in `VideoApplicationScenarioType`. You can call `setVideoScenario` to set the video application scenario to 1v1 video call, the SDK optimizes performance to achieve low latency and high video quality, enhancing image quality, first frame rendering, latency on mid-to-low-end devices, and smoothness under poor network conditions.