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MP4 Video Merger: 3 Solutions to Merge MP4 Videos Online and Free

by Christine Smith • Nov 20,2019 • Proven solutions

Want to create a video for training purpose, make a long extended clip or a movie from short videos? In all the situations, you would need to merge multiple videos into one. Additionally, if you have downloaded a number of video or audio files in MP4, MKV, AVI, MP3, and other formats from streaming sites and wish to play them together, you would need to combine MP4 files with others. So for all your video joining and merging needs, the guide below will help you with the best solutions.

Part 1. Best Way to Merge MP4 Files into One on Windows/Mac

There are a number of programs, software, and online tools that help to merge MP4 videos together. If you want to settle for nothing less than the best, then Wondershare MP4 Merger is the best choice. This professional software join MP4 files and other formats without any quality loss. You can also edit MP4 videos easily with cutting, cutting, cropping, adding subtitles and watermarks, etc. It acts as an all-in-one video toolbox that facilitates video conversion, merging, transferring, downloading, and recording.

video converter logo Wondershare UniConverter - Best MP4 Joiner for Windows/Mac

wondershare video merger
  • Support more than 1000 formats for editing, including MP4, MOV, WMV, AVI, MKV, etc.
  • One-click to merge multiple videos together without size and format limitations.
  • Edit MP4 videos with trimming and merging, cropping, adding subtitles, applying effects, and more others.
  • 30X faster converting speed with no quality loss than other common converters.
  • Transfer edited videos to iPhone/Android devices easily via a USB cable.
  • Burn videos to DVD with free menu templates and customized settings.
  • Versatile toolbox: Add video metadata, GIF maker, cast video to TV, video compressor and screen recorder.
  • Supported OS: Windows 10/8/7/XP/Vista, Mac OS 10.15 (Catalina), 10.14, 10.13, 10.12, 10.11, 10.10, 10.9, 10.8, 10.7, 10.6.
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Steps to Combine MP4 Videos Using Wondershare Video Merger

Step 1 Open Wondershare MP4 video merger and add MP4 files.

Launch the installed Wondershare UniConverter on your PC/Mac. Drag and drop the MP4 files you want to merge to the software panel directly, or click the +Add Files from the Convert tab to browse and add MP4 videos.

Open Wondershare MP4 video merger and add MP4 files

Step 2 Select the output format as MP4 for video combination.

Click the drop-down icon next to the Convert all files to: option. Select the desired output format and resolution from the Video tab. While merging all the files will be converted to the same format.

Select the output format for merging MP4 files

Step 3 Merge multiple MP4 videos easily.

On the main software interface, enable the Merge All Videos switch, and finally click the Convert All button to proceed with the process to combine MP4 videos.

All the added MP4 and other files will be merged together into one file which you can check from the Converted tab or click the Output icon at the bottom of the main interface.

Merge and convert files in MP4, MKV and others

Bonus Feature: Merge videos by cutting the unnecessary part

To make sure that your clips and movies turn into professional-looking videos, Wondershare video merger not only allows you to merge videos but also facilitates trimming videos selectively. So using the trim function of the video editor, you can get rid of the unwanted parts of the clips and then combine them together. Trimming the unnecessary parts can be removed to enhance your overall video watching experience. Learn how to trim videos easily.

So all your queries on how to merge two videos into one can be quickly and easily resolved using UniConverter.

Note: With the above solution, you can merge MP3 files, merge MKV files, merge FLV files, merge AVI files into one and more.

Watch Video Tutorial to Merge/Combine/Join Videos into One

Part 2. How to Merge MP4 Videos Together Online

Online tools come in handy when you have a few files and basic video merging needs. There are a number of free mp4 mergers that allow to join MP4 files online. And depending on your needs, you can pick the most suitable one. Majority of these tools are free to use and needs no download or installation. One such popularly used mp4 merger to combine MP4 online is AConvert. With AConvert, you can perform an array of functions like convert, crop, rotate, merge videos, and others. The MP4 video merger online supports an array of video formats for merging like MP4, AVI, WMV, ASF, OGV, and others. Thus, using this MP4 video joiner online, you can also join MKV files and other supported formats.

Note: Maximum of 200MB files can be added and all the files to be merged have to be of the same size, frame rate, and format.

How to Merge Two Videos Together Online Using AConvert

  • Step 1: Open https://www.aconvert.com/video/merge/ on your PC browser.
  • Step 2: Click Choose File to browse the file from PC or add file URL.
  • Step 3: Click Submit to start uploading the files and proceed with merging process.

After all the added files are merged, the final output file will be available at the interface for download.

merge videos online using AConvert

Limitations of merging videos online:

  • Maximum file size upload is restricted to 200MB.
  • The files to be merged needs to be in the same format, size, and frame rate.
  • Limited format support as compared to professional desktop software.
  • No option to select output format.
  • No editing features.

Part 3. How to Free Join Videos with VLC

When it comes to video playback programs, VLC stands on the list of top and popular names. But there is another side of this player as well - It works as a decent video editing tool. There are a number of editing features including merging videos that can be operated on VLC through command prompt. In order to merge video files using VLC, they need to be same in encoding. Looking for a way on how to merge videos in VLC, follow the steps below:

If your files to be merged do not have the same encoding, you need to first transcode them before proceeding with the other steps.

  • Step 1: Access your target video files from the windows folder, select all and right-click them to choose "Open Command Window", then you'd get a command pop up.
  • Step 2: Next copy-paste the detailed command "[Location of vlc.exe]" [first_clip.ext][second_clip.ext]-sout "#gather:std{access=file,dst=[new_name.ext]}"-sout-keep to the blank.
  • Step 3: Hit the Enter key and then wait as the VLC proceed to merge the files. You will know that VLC has completed the merging process when its status bar becomes blank and does not show the name of the videos.

Tips: If you want to merge 1.avi and 2.avi into another file named as 3.avi, then the command should change to "C:Program Files (x86)VideoLanVLCvlc.exe" rel="nofollow" 1.avi 2.avi --sout "#gather:std{access=file,dst=3.avi}" --sout-keep. Note the command works on the conditon that the VLC is installed by default directory.

Merge Videos in VLC

Limitations of merging videos in VLC:

  • The files to be merged needs to have similar encoding.
  • The process is quite complicated and difficult to understand for non-technical users.
  • VLC being a video player does not offer additional features.

So, after learning the above methods, it can be concluded that Wondershare UniConverter is the best and easiest video merger to combine 2 and more MP4 videos together. Free download and have a try now!

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Christine Smith

Christine Smith

chief Editor

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