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FLV Joiner: How to Join Multiple FLV Videos into One

FLV, short for Flash Video, is the widely accepted format at video sharing websites like YouTube. If you've ever downloaded a YouTube video, you may have gotten multiple FLV files. Want to join FLV files to one file so that you can play them in the order you want continuously?

To join FLV videos, I humbly recommend Wondershare Video Editor (Video Editor for Mac). It not only works as a perfect FLV video joiner, but also helps to add video effects, making movies with photos and music, creating Picture-in-Picture video and so on. Besides combining FLV videos, it also joins video files in all popular formats, including MP4, AVI, VOB, 3GP, 3G2, MOV, F4V, M4V, MPG, MPEG, WMV, MKV, ASF, MOD, TOD, etc. It's the all-in-one video software you should try. 

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Get more out of Wondershare Video Editor

Want more features besides FLV joiner? Wondershare Video Editor lets you do more:

  • Fine-tune options including Contrast, Brightness, Saturation, Hue, etc.
  • Choose from 48 transitions for FLV videos
  • More than 50 visual effects are ready to impress
  • Easily make a Picture-in-Picture video (another way to join FLV files)
  • Add background music/voiceover or replace the original audio
  • Add animated titles and good looking intros/credits

How to Join FLV Files

Step 1: Import FLV files

You can either click "Import" button on the primary window and browse FLV files on your computer, or just drag and drop FLV files from Windows File Explorer to the User's Album. In the User's Album, all imported FLV files will be displayed in thumbnails. Double click any FLV file to preview.

Step 2: Drag and drop FLV videos to join

To join FLV files, select multiple FLV files in the User's Album by holding down Ctrl or Shift key, and then drag and drop to the video track on the Timeline. All FLV files will join one after one in order automatically. By default, no transition will be applied, but you can add transitions between video clips as you want. See how below.

join flv

Tips: The Split, Trim, Crop and other comprehensive video editing tools are also included.

Step 3: Optional - Join FLV videos with transition

By adding transitions, you can make your joined FLV video good looking. To do so, switch to Transition tab, and drag the desired transition to the Timeline. If you want to add transitions in bulk, just right click any transition and choose "Apply to All" and "Random to All" from the resulting menu to add transitions in seconds.

join flv with transition

Step 4: Join FLV files to one

Now click Play button to preview the joined FLV video as one and if the result is OK, click "Create" button to save the FLV video to one file in any regular format you want. In Format tab, select the format and click Create to start joining FLV videos. If you want to play the joined FLV files on iPod, iPhone, iPad, choose "Device" and select the device thumbnail from the list. You can also directly upload the joined FLV video to YouTube or burn to DVD discs for watching on TV.

merge flv

Bravo. Now you have learned how to join FLV files. Get Wondershare Video Editor now to join FLV video and enhance them if necessary.

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Worked GREAT! Joined two fairly large flv files in just a few seconds
Perfect. After spending hours searching for and trying others to no avail, it took me just 20 seconds from download to task complete to join three .flv files (5 minutes and 17 MB total) with no discernable loss in quality. Couldn't ask for anything any better and any simpler than this.


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