VLC merge videos not working? Here’s how to fix it

Matthew Adams
by Matthew Adams
Windows & Software Expert
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  • VLC has a handy command-line tool for merging videos, but it only merges landscape videos of the same format.
  • This guide tells you how users can fix VLC's video merging by converting source videos to an alternative format and adjusting video orientation.
  • Check out our thorough VLC webpage for further details about this useful media player.
  • To browse through other useful information on video tools and troubleshooting, check out our Video hub.
fix vlc merge videos not working

VLC is one of the most flexible media players for Windows. That media player even enables its users to merge multiple videos into one clip with its command-line video merge tool.

The Merge videos together page on VLC’s support site includes guidelines for how to merge videos with VLC.

However, VLC’s merge videos feature won’t work if the source files for the merged video aren’t of the same format and if any of them have portrait orientations (such as clips recorded with mobiles).

Furthermore, VLC’s video merging might not work for users who need to update that media player’s codecs.

What can I do if the VLC video merge option is not working?

1. Use Any Video Converter Ultimate

Any Video Converter vlc merge videos not working

Any Video Converter Ultimate (AVC) is ideal for batch converting videos to a required file format. That software enables users to convert video and music files to a wide variety of alternative multimedia formats (and includes various output presets for numerous devices).

AVC Ultimate also incorporates numerous editing options for videos. Its users can crop, clip, flip, and add effects to the converted video output.

Other useful features

  • Records online streaming movies
  • Converts ISO files to alternative formats
  • Enables users to download videos from YouTube and other websites
  • Includes a DVD-burning utility
  • Enables users to set up DVD movies with custom templates

Note: You can also merge videos with AVC.

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2. Change portrait source videos to landscape ones

  1. Open a portrait video you need to rotate to landscape orientation in the VLC media player.
  2. Click the Tools menu, and select the Effect and filters option.
  3. Next, select the Video Effects tab.
  4. Click the Geometry sub-tab.
    Geometry tab vlc merge videos not working
  5. Select the Transform option.
  6. Then select the Rotate by 90 degrees option.
  7. Press the Close button.

Save the rotated video

  1. Thereafter, click Convert / Save on the Media menu.
  2. Click Tools, and then choose Preferences to open the window in the shot directly below.
    Simple Preferences window vlc merge videos not working
  3. Click the All option.
  4. Then click Sout stream and Transcode to open video filter options.
    The Video filter options vlc merge videos not working
  5. Select the Video transformation filter checkbox.
  6. Press the Save button.
  7. Select the Media menu’s Convert / Save option.
  8. Click the Add option, and select the video you’ve rotated.
    Open Media window vlc merge videos not working
  9. Press the Convert/Save button to open a Convert window.
  10. Select a destination folder by clicking Browse.
  11. Click the Start button.
  12. To undo the rotation settings after saving the rotated video, click the Reset Preferences button on VLC’s Interface tab.

3. Update VLC’s video codec

  1. Open the VLC media player.
  2. Click the Help menu.
    Help menu vlc merge videos not working
  3. Click the Check for Updates option.
  4. Press the Yes button if an update is available.
  5. Choose a folder to download to.
  6. Click the Select Folder option.
  7. Thereafter, click the Install button on the Update VLC media player prompt.
    Update VLC media player prompt vlc merge videos not working
  8. Then install the software update via the VLC media player Setup window.

When all your source clips are of the same format and have landscape orientations, you should be able to merge them with the latest VLC version.

If not, one of your source files for the video might be corrupted. So, also check that all the video source files play ok before merging them.