1# Media Subsystem ChangeLog
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3## cl.media.1 Playback APIs Changed
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5The APIs related to audio track switching are deleted.
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7**Change Impact**
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9These APIs are unavailable.
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11**Key API/Component Changes**
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13The deleted APIs are as follows:
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15| Class          | API                                                |
16| -------------- | ------------------------------------------------------------ |
17| Media.Core     | MD_KEY_LANGUAGE                                              |
18| Media.AVPlayer | selectTrack(index: number): void                             |
19| Media.AVPlayer | deselectTrack(index: number): void                           |
20| Media.AVPlayer | getCurrentTrack(trackType: MediaType, callback: AsyncCallback\<number>): void |
21| Media.AVPlayer | getCurrentTrack(trackType: MediaType): Promise\<number>      |
22| Media.AVPlayer | on(type: 'trackChange', callback: (index: number, isSelect: boolean) => void): void; |
23| Media.AVPlayer | off(type: 'trackChange'): void                               |
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