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// Get the `recorder` object
TXUGCRecord *recorder =  [TXUGCRecord shareInstance];

// Set the background music file path
[recorder setBGMAsset:path];

// Set the background music. If the music file is loaded from the system media library, you can directly pass in the corresponding `AVAsset`
[recorder setBGMAsset:asset];

// Play back the background music
[recorder playBGMFromTime:beginTime
                   toTime:endTime
          withBeginNotify:^(NSInteger errCode) {
      // Callback for the start of playback. If `errCode` is 0, it is a success; otherwise, it is a failure
     } withProgressNotify:^(NSInteger progressMS, NSInteger durationMS) {
      // progressMS: duration of the part that has been played back. durationMS: total duration
      } andCompleteNotify:^(NSInteger errCode) {
      // Callback for the end of playback. If `errCode` is 0, it is a success; otherwise, it is a failure
      }];

// Stop the background music
[recorder stopBGM];

// Pause the background music
[recorder pauseBGM];

// Resume the background music
[recorder resumeBGM];

// Set mic volume level. It is used to adjust the mic volume level when background music is played back
// volume: volume level. 1 indicates the normal volume level. The recommended value range is 0–2. If you want to increase the volume level, you can set a higher value
[recorder setMicVolume:1.0];

// `setBGMVolume` is used to set the background music volume level. It controls the background music volume level during playback.
// volume: volume level. 1 indicates the normal volume level. The recommended value range is 0–2. If you want to increase the background music volume level, you can set a higher value
[recorder setBGMVolume:1.0];

// Initialize the editor
TXPreviewParam *param = [[TXPreviewParam alloc] init];
param.videoView = videoView;
param.renderMode = PREVIEW_RENDER_MODE_FILL_EDGE;
ugcEdit = [[TXVideoEditer alloc] initWithPreview:param];

// Set the background music file path
 [ugcEdit setBGMAsset:fileAsset result:^(int result) {
 }];

// Set the start and end time for background music playback
[ugcEdit setBGMStartTime:0 endTime:5];

// Set whether to loop the background music
[ugcEdit setBGMLoop:YES];

// Set the start position where the background music is to be added in the video
[ugcEdit setBGMAtVideoTime:0];

// Set the video volume level
[ugcEdit setVideoVolume:1.0];

// Set the background music volume level
[ugcEdit setBGMVolume:1.0];