Split mp4 into multiple files

What is a Video Splitter?

A video splitter is a tool that helps you to split video into equal parts based on your requirements. Suppose you have a two-hour lecture recording, A 3-hour long movie, an event video, a forty-minute tutorial, or a long vlog that's too big to share easily. A video splitter tool allows you to break long videos into shorter segments. You can split by specific time intervals (e.g., every 10 minutes), by file size (e.g., every 100MB), by selecting number of files (e.g., No of Files: 5) or manually at any point in the video. Just select your preference mode, and hit "Split Video". The tool processes the video according to your settings and gives you downloadable parts. No upload to any server, no watermarks, no hidden fees.

History of Video Splitting — The Timeline

Mechanism — How does video splitting actually work?

People think that cutting videos is like cutting a slice of an apple. Here's a complete step-by-step guide about what happens when you click "Split Video":

• 1. Video decoding in memory — When user uploads a video file to video splitter, Browser accesses these files without uploading them to any external servers. File API reads the selected video file in browser's memory.
• 2. Calculating split points — After uploading video file to browser, user has to choose splitting mode (free, average, time, or size). After selecting mode, tool calculates exact timestamps from video where each new part should begin and end. For example, for free split, there will be only one timestamp. For average split, timestamps depends on chosen number of parts. For time split, tool creates parts duration based on your selected time. For size split, tool estimates duration based on file size ratio.
• 3. Creating a hidden video element — To create clips from a long video, tool creates a temporary video to load original video.
• 4. Canvas capture and audio mixing — To divide long videos into smaller parts, a canvas captures video frames at about 30 frames per second. In the same time, Web Audio API extract audio track from the uploaded video. In the final step both, audio track and canvas combined in a single MediaStream.
• 5. Recording the segment — Recording the segment happens real time, this is the main reason splitting a 10-minutes long video might take about 10 minutes. The MediaRecorder API records the combined stream into a video blob.
• 6. Creating download links — As MediaRecorder API records the segments and each recorded segment becomes a downloadable video file MP4 format. You can save created smaller parts individually or all at once.

Important: Splitting long videos or creating smaller parts from long video is a local process. Your CPU does all the processing work. So, this is the main reason that splitting videos is a time consuming task, as 15-minutes long video might take 15 minutes to divide.

Where can you use the split videos?

Once you have split or created smaller parts from your long video. These smaller parts or clips are standard video files. So you are free to use them anywhere like:

Real-world examples: A teacher can use this tool to split their 3-hour long lecture into 10-minute segments to easily share students. A content creator creates a full length video and then create smaller parts to remove raw scenes or parts from final video. A gaming institute can break training course into smaller parts and can share each part to a different student.

Content creators often split long videos into YouTube shorts to target short-form audiences. Use our Time Split mode with 60-second duration for perfect YouTube Shorts.

Understanding the four split modes

Free Split — Wondering how to split a video into two parts? Use our Free Split mode. When you select a video, selected video timeline will display below the video with a slider on it. Drag slider over timeline left or right to choose exactly where to cut. Video will be divided into two parts. before the slider and after the slider. Best for splitting a video from exact center or at a natural point.

Average Split — Use Average Split mode to split video into equal parts. Just select the video and tell tool how many parts you want. Press "-" or "+" buttons to choose number of files you want. Tool divides the total video duration equally and create that many number of files you selected. This mode is perfect for splitting a long video or recording into equal length parts or series.

Time Split — Mode to create exact time clips. This mode is useful for platforms have time limit videos to upload (e.g., Instagram reels under 90 seconds) or you want to cut long video into equal parts having equal time. You set a fixed duration (like 5 minutes, 10 minutes, or 30 seconds). Tool will create as many parts as needed, and each part will have exact time length decided by you.

Size Split — Use this mode to split video by file size. Drag a slider to choose file size for every part (e.g., 50MB, 100MB, 500MB). The tool will calculate automatically that how many parts will create in that file size, and then start splitting. This mode is perfect for creating videos for email attachments, upload limits, or if you need to split your long video under a specific file size.