diff --git a/en/application-dev/reference/apis/js-apis-media.md b/en/application-dev/reference/apis/js-apis-media.md
index 96b190f1f7f9166c68ef1fda64bb9a98bf6b269d..94499cdc9ad1f967bc4e2c2a3c1c7efe46fc5923 100644
--- a/en/application-dev/reference/apis/js-apis-media.md
+++ b/en/application-dev/reference/apis/js-apis-media.md
@@ -163,9 +163,9 @@ Only one **AudioRecorder** instance can be created per device.
**Return value**
-| Type | Description |
-| ----------------------------------------- | ----------------------------------- |
-| Promise<[VideoRecorder](#videorecorder9)> | Promise used to return the **VideoRecorder** instance created.|
+| Type | Description |
+| ----------------------------------------- | ------------------------------------------------------------ |
+| Promise<[VideoRecorder](#videorecorder9)> | Promise used to return the **VideoRecorder** instance created. |
**Example**
@@ -275,15 +275,15 @@ For details about the audio playback demo, see [Audio Playback Development](../.
**System capability**: SystemCapability.Multimedia.Media.AudioPlayer
-| Name | Type | Readable| Writable| Description |
-| ------------------------------- | ----------------------------------- | ---- | ---- | ------------------------------------------------------------ |
-| src | string | Yes | Yes | Audio file URI. The mainstream audio formats (M4A, AAC, MPEG-3, OGG, and WAV) are supported.
**Examples of supported URI schemes**:
1. FD: fd://xx
2. HTTP: http://xx
3. HTTPS: https://xx
4. HLS: http://xx or https://xx
**Required permissions**: ohos.permission.INTERNET|
-| fdSrc9+ | [AVFileDescriptor](#avfiledescriptor9) | Yes | Yes | Description of the audio file. This attribute is required when audio resources of an application are continuously stored in a file.
**Example:**
Assume that a music file that stores continuous music resources consists of the following:
Music 1 (address offset: 0, byte length: 100)
Music 2 (address offset: 101; byte length: 50)
Music 3 (address offset: 151, byte length: 150)
1. To play music 1: AVFileDescriptor {fd = resource handle; offset = 0; length = 100; }
2. To play music 2: AVFileDescriptor {fd = resource handle; offset = 101; length = 50; }
3. To play music 3: AVFileDescriptor {fd = resource handle; offset = 151; length = 150; }
If the file is an independent music file, use **src=fd://xx**.
|
-| loop | boolean | Yes | Yes | Whether to loop audio playback. The value **true** means to loop audio playback, and **false** means the opposite. |
-| audioInterruptMode9+ | [audio.InterruptMode](js-apis-audio.md#interruptmode9) | Yes | Yes | Audio interruption mode. |
-| currentTime | number | Yes | No | Current audio playback position, in ms. |
-| duration | number | Yes | No | Audio duration, in ms. |
-| state | [AudioState](#audiostate) | Yes | No | Audio playback state. This state cannot be used as the condition for triggering the call of **play()**, **pause()**, or **stop()**.|
+| Name | Type | Readable| Writable| Description |
+| ------------------------------- | ------------------------------------------------------ | ---- | ---- | ------------------------------------------------------------ |
+| src | string | Yes | Yes | Audio file URI. The mainstream audio formats (M4A, AAC, MPEG-3, OGG, and WAV) are supported.
**Examples of supported URI schemes**:
1. FD: fd://xx
2. HTTP: http://xx
3. HTTPS: https://xx
4. HLS: http://xx or https://xx
**Required permissions**: ohos.permission.READ_MEDIA or ohos.permission.INTERNET|
+| fdSrc9+ | [AVFileDescriptor](#avfiledescriptor9) | Yes | Yes | Description of the audio file. This attribute is required when audio resources of an application are continuously stored in a file.
**Example:**
Assume that a music file that stores continuous music resources consists of the following:
Music 1 (address offset: 0, byte length: 100)
Music 2 (address offset: 101; byte length: 50)
Music 3 (address offset: 151, byte length: 150)
1. To play music 1: AVFileDescriptor {fd = resource handle; offset = 0; length = 100; }
2. To play music 2: AVFileDescriptor {fd = resource handle; offset = 101; length = 50; }
3. To play music 3: AVFileDescriptor {fd = resource handle; offset = 151; length = 150; }
If the file is an independent music file, use **src=fd://xx**.
|
+| loop | boolean | Yes | Yes | Whether to loop audio playback. The value **true** means to loop audio playback, and **false** means the opposite. |
+| audioInterruptMode9+ | [audio.InterruptMode](js-apis-audio.md#interruptmode9) | Yes | Yes | Audio interruption mode. |
+| currentTime | number | Yes | No | Current audio playback position, in ms. |
+| duration | number | Yes | No | Audio duration, in ms. |
+| state | [AudioState](#audiostate) | Yes | No | Audio playback state. This state cannot be used as the condition for triggering the call of **play()**, **pause()**, or **stop()**.|
### play
play(): void
@@ -442,7 +442,7 @@ function printfDescription(obj) {
}
}
-audioPlayer.getTrackDescription((error, ) => {
+audioPlayer.getTrackDescription((error, arrlist) => {
if (arrlist != null) {
for (let i = 0; i < arrlist.length; i++) {
printfDescription(arrlist[i]);
@@ -680,7 +680,7 @@ For details about the video playback demo, see [Video Playback Development](../.
| Name | Type | Readable| Writable| Description |
| ------------------------ | ---------------------------------- | ---- | ---- | ------------------------------------------------------------ |
-| url8+ | string | Yes | Yes | Video media URL. The mainstream video formats (MPEG-4, MPEG-TS, WebM, and MKV) are supported.
**Example of supported URIs**:
1. FD: fd://xx
2. HTTP: http://xx
3. HTTPS: https://xx
4. HLS: http://xx or https://xx
**Required permissions**: ohos.permission.INTERNET|
+| url8+ | string | Yes | Yes | Video media URL. The mainstream video formats (MPEG-4, MPEG-TS, WebM, and MKV) are supported.
**Example of supported URIs**:
1. FD: fd://xx
2. HTTP: http://xx
3. HTTPS: https://xx
4. HLS: http://xx or https://xx
|
| fdSrc9+ | [AVFileDescriptor](#avfiledescriptor9) | Yes| Yes| Description of a video file. This attribute is required when video resources of an application are continuously stored in a file.
**Example:**
Assume that a music file that stores continuous music resources consists of the following:
Video 1 (address offset: 0, byte length: 100)
Video 2 (address offset: 101; byte length: 50)
Video 3 (address offset: 151, byte length: 150)
1. To play video 1: AVFileDescriptor {fd = resource handle; offset = 0; length = 100; }
2. To play video 2: AVFileDescriptor {fd = resource handle; offset = 101; length = 50; }
3. To play video 3: AVFileDescriptor {fd = resource handle; offset = 151; length = 150; }
To play an independent video file, use **src=fd://xx**.
|
| loop8+ | boolean | Yes | Yes | Whether to loop video playback. The value **true** means to loop video playback, and **false** means the opposite. |
| videoScaleType9+ | [VideoScaleType](#videoscaletype9) | Yes | Yes | Video scale type. |
@@ -1795,7 +1795,7 @@ Subscribes to the audio recording events.
```js
let audioRecorder = media.createAudioRecorder(); // Create an AudioRecorder instance.
let audioRecorderConfig = {
- audioEncoder : media.AudioEncoder.AAC_LC, ,
+ audioEncoder : media.AudioEncoder.AAC_LC,
audioEncodeBitRate : 22050,
audioSampleRate : 22050,
numberOfChannels : 2,
@@ -1850,7 +1850,7 @@ Subscribes to audio recording error events. After an error event is reported, yo
```js
let audioRecorderConfig = {
- audioEncoder : media.AudioEncoder.AAC_LC, ,
+ audioEncoder : media.AudioEncoder.AAC_LC,
audioEncodeBitRate : 22050,
audioSampleRate : 22050,
numberOfChannels : 2,
@@ -1974,29 +1974,13 @@ let videoConfig = {
}
// asyncallback
-let videoRecorder = null;
-let events = require('events');
-let eventEmitter = new events.EventEmitter();
-
-eventEmitter.on('prepare', () => {
- videoRecorder.prepare(videoConfig, (err) => {
- if (err == null) {
- console.info('prepare success');
- } else {
- console.info('prepare failed and error is ' + err.message);
- }
- });
-});
-
-media.createVideoRecorder((err, recorder) => {
- if (err == null && recorder != null) {
- videoRecorder = recorder;
- console.info('createVideoRecorder success');
- eventEmitter.emit('prepare'); // Trigger the 'prepare' event.
+videoRecorder.prepare(videoConfig, (err) => {
+ if (err == null) {
+ console.info('prepare success');
} else {
- console.info('createVideoRecorder failed and error is ' + err.message);
+ console.info('prepare failed and error is ' + err.message);
}
-});
+})
```
### prepare9+
@@ -2047,21 +2031,10 @@ let videoConfig = {
}
// promise
-let videoRecorder = null;
-media.createVideoRecorder().then((recorder) => {
- if (recorder != null) {
- videoRecorder = recorder;
- console.info('createVideoRecorder success');
- videoRecorder.prepare(videoConfig).then(() => {
- console.info('prepare success');
- }).catch((err) => {
- console.info('prepare failed and catch error is ' + err.message);
- });
- } else {
- console.info('createVideoRecorder failed');
- }
+videoRecorder.prepare(videoConfig).then(() => {
+ console.info('prepare success');
}).catch((err) => {
- console.info('catch err error message is ' + err.message);
+ console.info('prepare failed and catch error is ' + err.message);
});
```
@@ -2475,11 +2448,10 @@ Subscribes to video recording error events. After an error event is reported, yo
**Example**
```js
+// This event is reported when an error occurs during the retrieval of videoRecordState.
videoRecorder.on('error', (error) => { // Set the 'error' event callback.
console.info(`audio error called, error: ${error}`);
-}
-// This event is reported when an error occurs during the retrieval of videoRecordState.
-});
+})
```
## VideoRecordState9+