//Get the object of the previous shooting
record = [TXUGCRecord shareInstance];

//Start shooting a video.
[record startRecord];

//Pause the shooting and cache the video segment
[record pauseRecord:^{
NSArray *videoPathList = record.partsManager.getVideoPathList;
//Set `videoPathList` to a local path.
}];

//Get the object of the resumed shooting.
record2 = [TXUGCRecord shareInstance]；

//Preload the locally cached video segment.
[record2.partsManager insertPart:videoPath atIndex:0];

//Start the shooting
[record2 startRecord];

//End the shooting. The SDK will splice together the two video segments.
[record2 stopRecord];