1.Merge audio, video, and pictures. 2.Pictures can be combined into video. 3.The audio and picture merge into video files. 4.To replace the original audio of video. 5.Other merger Etc. Merge Options Description: P/P: Picture+Picture for merge； V/V： Video+Video for merge; A/A： Audio+Audio for merge; V/A： Video + Audio for merge; P/A： Pictures + Audio for merge; P+V：Pictures + Video for merge; V+P：Video + Pictures for merge; V+P/A: Video + Pictures/Audio for Merge; P/A+V: Pictures/Audio + Video for Merge; V/P+A: Video/Pictures+Audio for Merge; P/V+A: Pictures/Video+Audio for merge;