Yesterday, I downloaded two .flv video from YouTube and suddenly I had an interesting idea. I want to merge the two videos into one and replace the audio with my favorite song Hotel California. But first I need a FLV editor to help me and luckily I find a wonderful free software FLV Editor Lite Beta. This application has great power of editing .flv files like trim FLV, cut FLV, split FLV, merge FLV and replace the original audio of FLV.

Here I will tell you how to make an interesting MTV by your self. 

Step1. Download and launch FLV Editor Lite Beta.

After you install and launch it you can this interface.

Step2. Input FLV

You can input your .flv file into this software with 6 ways. Please check the following image (from left to right).

1 Open FLV: You can input FLV to Resource List and Timeline. Only one FLV file can be open at one time. And if there are other files on Resource List or Timeline, this file will replace all the previous ones.

2 Open FLV (from Media Library): You can input an FLV file from Moyea YouTube FLV Downloader Library to Resource List and Timeline. (Not available in this Beta version.)

3 Open FLV (from IE Cache): Clicking this button, you will open the IE Cache import window. You can click on the list to preview the FLV before opening. Still, the file will be input to Resource List and Timeline.

4 Import FLV: You can import many FLV files at one time from My Computer to Resource List. The previous inputted FLV files will not be replaced.

5 Import FLV (from Media Library): You will open the Media Library of Moyea YouTube FLV Downloader to import FLV files you downloaded. Still, you can import multiple FLV files to Resource List.

6 Import (from IE Cache): You will launch the IE Cache import window. All FLV videos in your IE cache will be shown. You can check multiple FLV files here and import the FLVs to Resource List.

7 Import MP3: You are even able to import and edit MP3 audio files. It enables you to make your own MTV.

Step3. Trim FLV files on timeline

After imported the two .flv files, we can see this interface.

edit.jpg

Double click the thumbnail then you can see the video in the preview window on the right side. And you can just drag the .flv into timeline (in red) for further editing.

After drag the file in the timeline, I will cut a little piece of it because I don’t want the head which just black. Choose the proper time point with the little diamond button and click the scissor button

As you see the video has been cut to two pieces, and then choose the head section click delete button delete.jpg, this piece will be trimmed successfully. Trim the last part too, now this video only rest 3 minutes and 20 seconds.

Step4. Merge FLV.

Drag the other .flv into the timeline, and you can see they are linked as one. By choose the magnet button magnet.jpg you can link these two video clips easier.

Step5. Split the audio from the video and replace it with .mp3

Choose these two videos and click unlink button separately to split the audio from the video.

Delete the audio only and input the .mp3 file and trim the unnecessary video.

Step6. Export FLV

After all the edit things, now we can export our own FLV file by click export FLV (in red).

In the dialogue box we can modify the export folder and export file name, and then click Start to export it.

Here I should notice you that if you choose Export FLV (to FLV to Video Converter Pro 2) pro2.jpg, you need to installed Moyea FLV to Video Converter Pro 2 firstly and then the exported video will be inputted into it. With the converter you can continue to convert the .flv file to other video format like .avi, .3gp, .mov, .mpeg etc.

Details please refer to this article: http://www.video-to-flash.com/flv_video_converter/tutorial