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You're in good company:
Zamzar has converted over 510 million files since 2006

Why split MP4?
A whopping 80% of all internet traffic is related to streaming video — and a huge percentage of this video streaming comes from MP4 files! This video format is nearly ubiquitous on sites like YouTube, Facebook, and Instagram. Not only are MP4 files compatible with most media players, but they also offer fairly high-quality video to boot. The only real downside? Large file sizes. Forget about trying to share your MP4 files via email, text, or even Google Drive (unless you want to max out your limits, that is).
If you're looking for an easier way to store, transfer, or upload large MP4 files, you need to learn how to split an MP4 into multiple files. Splitting MP4 video files allows you to maintain a high level of video quality by avoiding compressing the footage or attempting crazy editing acrobatics. If you choose to split an MP4 file online, you can select any number of 'parts' to separate your file into. That way, you can share or store just the parts you need, and easily send selected clips to your friends or post them online. No need to take our word for it, though: you can start splitting MP4 video files with Zamzar today.
Any Operating System
It doesn’t matter what operating system you’re running; as long as you have a web browser, Zamzar can convert your files.
Secure
All traffic to and from our servers is secured by transport-level security, using 128-bit SSL to encrypt the data sent between your systems and ours.
1100+ File-conversion Types Supported
As well as document, audio, image and video conversions, we also support CAD, ebooks and compressed file formats.
Dependable
If you need a file converted quickly and securely, then you can rely on Zamzar to do just that.