Best MP4 Joiners

Why I picked it: this lightweight Windows-based program was designed with the specific intention of splitting, cutting, or merging files into one large video without quality loss.

Bandicut is one of the video joiners that popped up most prominently during my search. I initially installed it because I was surprised at how basic its system requirements were. Needing just 512MB of RAM, 50MB of HDD space, and at least an Intel Pentium 4, Bandicut caught my attention as an impressively compact program.

Despite its lightweight requirements, though, Bandicut performed impressively well when I tested it. The program offers just three functions: trimming, splitting, and joining. Its interface is notably clean, and it supports a wide range of video formats. In terms of output, it offers lossless video merging via high-speed mode, as well as hardware-accelerated encoding with GPU-equipped computers.

Bandicut is just one of the programs offered by the Bandicam company. It's a well-maintained program with a well-documented history of performance updates, with its most recent upgrade for hardware-accelerated playback released just in September of 2025.

Why I picked it: VLC is a program that virtually every person has installed on their computer, offering an accessible MP4 merging tool for quick, simple projects.

VLC is my go-to for video playback. This program has been around for decades, and its compatibility with virtually every video and audio file format makes it an indispensable desktop program for not just me, but for billions of users worldwide. Recently, though, I discovered that VLC can do much more than just playback.

After tinkering with the menus, I found out that it also has a merging function. All you need to do is click Media, open multiple files, and select the videos you want to merge. A convert video prompt will pop up where you'll choose your output file format and where you want to save it. Then it's just a matter of waiting for the rendering process.

Released in 2001, VLC still gets program updates to this day, with their most recent version release, VLC 3.0.21, introducing improvements to video output rendering as well as expanded format and codec support.

Why I picked it: a reliable desktop video editing suite with trim, split, and merge functions that provide lossless MP4 joining functions.

Gilisoft may look like it's fresh from the early 2000s, but this free video joiner provides functions that are relevant and reliable to this day. I installed Gilisoft to explore its joining feature, and was pleasantly surprised to find that it also came with various other features that enriched my editing experience.

Transitions, overlays, texts, and simple filters all let me enhance my video joining task so that the resulting clip wasn't so basic and plain. I was also pleasantly surprised to find a tool that lets you remove existing watermarks on video files, which isn't common across the video editors I've tried.

Despite its ‘vintage’ look, Gilisoft is a well-maintained program. In October of 2025, they introduced new tools like the ‘add watermark’ feature that lets you put your own unique branding on your video output.

Why I picked it: Filmora's drag-and-drop workflow coupled with its export presets make it a suitable MP4 joiner, although it offers more than just that.

There have been times in the past when I had to merge MP4 files together but needed a little extra polish. Filmora has been a reliable solution for such cases. The program uses a clean, drag-and-drop timeline that lets you easily line up multiple clips, trim out the unnecessary segments, and apply transitions for smooth playback.

What I truly appreciate about Filmora is how it balances simplicity with creative control. In the end, your MP4 joining project ends up looking much more professional, without having to power up such a demanding, complex software.
Filmora developers have an active review presence and the program gets frequent new version releases. Version 14 came with a bunch of new tools and functions, most notably the integration of more AI features for an easier workflow and upgraded editing outcomes.

Why I picked it: one of the most well-rounded video editing suites with professional-grade tools packed into a clean interface that’s simple enough for everyday users.

While most video editing and merging programs can handle your average, everyday MP4 joining projects without a hitch, you’ll need something more powerful for bigger, high-resolution files. That’s where PowerDirector comes in. This program has been a reliable choice for my projects that called for more power, especially when handling several hours of footage.

Despite its robust performance, PowerDirector uses a pretty neat interface. Just import your clips, drag and drop them in place, trim, add transitions, effects, or overlays as you want, and then export as a single file. PowerDirector also uses hardware acceleration to speed up the rendering process by outsourcing the work to your GPU so your CPU can focus on its core tasks.

They’ve released quite a few new features just this September of 2025, but my favorite would have to be the ripple editing function which aligns elements in your clips after you’ve trimmed portions out, so you still end up with smooth, consistent playback.

Why I picked it: Shotcut is a free, open-source video editor that gives you full control over your MP4 files, including trimming, splitting, and merging functions, even with other video formats.

I’ll admit that Shotcut’s UI isn’t exactly my cup of tea. But because of its reliable performance, I find that navigating its cluttered UI is a small price to pay. Shotcut’s impressively wide compatibility with virtually every video file type makes it a solid choice for working with mixed media. I found that it let me merge my MP4 files with other video formats like MKV and AVI without a hitch.

Another thing I like about Shotcut is that it doesn’t require any import. So when you add your files to the timeline, you can work on them instantly without the need to wait for the program to encode. If you’re working with lengthy video files, this can cut down your editing time significantly.

Shotcut recently released their latest 25.08.16 version which worked on a couple of bugs and improved some audio functions. Being a long-standing, well-maintained, and feature-rich video editing program, I can see Shotcut having a permanent place in my computer software library.

Why I picked it: a complete video editor with a long-standing reputation as a reliable, precise program with a free download and wide format compatibility beyond MP4.

For times when I need more precise control over my MP4 merging tasks, OpenShot has been a reliable program. Instead of using a drag-and-drop workflow (which has its own perks especially for ease of use), it provides multi-track timeline controls. This provides a higher level of precision so you can arrange clips in sequence and overlap them for transitions.

On top of that, this video joiner for a PC supports a wide range of file types that you can add to the same project. Newer versions support hardware acceleration to reduce the workload on your CPU and keep your computer running even during complex rendering.

Why I picked it: a reliable online video merger that’s free to use and access, designed by one of the most well-known developers for convenience and ease.

Of all the web-based MP4 video joiners out there, I have to say that Adobe® Express has to be one of my favorites. This platform has become my go-to for quick merging projects because of its intuitive interface and overlays, transitions, and built-in music selection that add a professional touch to my projects.

The platform serves smooth, cloud-based rendering that’s fairly fast. This also means that I can continue on with my work tasks while it exports in the background, since the load is taken off my CPU. What I appreciate about Adobe® Express is that it also lets you change your aspect ratio for compatibility with different devices.
As one of Adobe’s most popular products, Adobe® Express gets a lot of traffic and, therefore, a lot of updates. Most recently, they added new design assets and AI-generated social captions.

Why I picked it: a browser-based video editing platform with cut, trim, and merge functions so you can join MP4 videos without having to download new software.

Some people don't want to have to install a new program just to join a few MP4 videos. This is especially true for basic, one-time MP4 merging projects. That's why I find Clideo to be such a nifty tool. This browser-based program has a dedicated MP4 merging function that allows up to 500MB of total video in the free version.
If you need to merge more than that, you'll have to pay for their premium membership that allows an impressive 100GB. Clideo doesn't have too much information online about updates, but a recent post on their website mentioned that they regularly maintain their services.

Why I picked it: this browser-based, AI-integrated, video editing platform has an easy merging option that lets you stitch your MP4 files together from the comfort of your browser.

I admit that I found VEED.IO for completely different reasons. At the time, I was looking for an AI video editing platform that could streamline my video editing process. After some time playing around with the platform, I found that it could also easily merge videos together with its basic, browser-based upload workflow.

To merge videos with VEED.IO, just visit their website, upload your videos via the ‘Upload Your Video’ prompt, arrange your clips on the timeline, and then add whatever optional edits you want. The platform then exports your video as a single file.

VEED.IO is a fairly new platform, released some time in 2018. As it tries to integrate more and more AI tools into its repertoire, the platform gets frequent performance and stability updates, with their most recent being an AI agent that claims to automate your video workflow.

Why I picked it: this browser-based MP4 joiner uses cloud rendering to take the load off of your CPU and allow faster, more efficient video processing.

Flixier was one of those website platforms that I was hearing a lot about but didn’t really bother to check out until I found myself looking for the best MP4 joiner. This fairly new platform came out just in 2019, and has since earned quite the reputation as a solid web-based platform for editing videos.

The service advertises itself as ‘easy for beginners, limitless for pros’, and I have to admit that it’s a pretty accurate claim. When I tried it, Flixier felt intuitive and automatic, like I could figure everything out at a glance. But then it packs a lot of AI-powered editing features that expand creative horizons.
Merging videos with Flixier is fairly simple – just upload your files, drag them in place on the timeline, trim as needed, add transitions, and explore AI features that you might want to apply. Rendering is also impressively fast thanks to the platform’s cloud-based processing. You can save the file directly to your storage or export to LinkedIn or Instagram straight from the site, which is a feature they just recently rolled out.

Why I picked it: another browser-based tool with cloud rendering for easy merging projects especially when you’re pressed for time.

FlexClip is actually an AI video generator, but I explored its functions and found that I could use it for merging videos, too. The website has a dedicated page for a free online video merger that lets you upload your media and arrange them on a storyboard. The platform also has some basic editing options like transitions, text, overlay, and other built-in elements and assets that you can add to your project.

While FlexClip lets you add all sorts of video files together in one project, exports are downloaded in MP4 only. The website supports an output resolution of up to 1080p which I found to be just high enough for most of my merging tasks.

The platform receives regular updates from its developers, so the overall experience was pretty hitch-free when I tested it out. Their September 2025 introduced a range of new AI features for a more streamlined editing process and enhanced video output.