How to Trim MP4 on Mac or Windows?

MP4 Trimmer: Trim MP4 Files and Get the Part You Desire

Free get this powerful MP4 trimmer and follow the guide to cut MP4 with simple steps, in order to get the part you want.

Best MP4 Trimmer for Windows and Mac

Avdshare Video Converter is proved as the best MP4 trimmer for both Windows and Mac platform. You can not only drag the bar to set the approximate beginning and end time, but also set the exact start and end time. This powerful app can also split or merge the MP4 files.

This powerful MP4 trimmer can cut files in any format like MP4, MOV, AVI, MKV, VOB, DV, FLV, RMVB, AVCHD, MPEG, M2TS, etc. In addition, there are various output options to let you keep the original file format or convert it to other format. You are also allowed to import the trimmed MP4 files directly to any portable devices like iPhone, iPad, iPod, Blackberry, Samsung, HTC, PSP, PS3, Xbox, Zune, etc.

Besides cut MP4, this all-in-one MP4 trimmer can do some edition job like add special effect/water mark; define video resolution/size/bit rate, add/delete/define audio channel, add/delete/edit subtitles, etc.

Guide to Trim MP4 on Mac and Windows

Here is an elaborate guide to show how to trim MP4 file easily.

Get ready: free download the best MP4 trimmer.

Download the Free Trial, and install the professional MP4 trimmer-Avdshare Video Converter (for Windows, for Mac), and then launch it, the following interface will pop up.


Step 1 Insert MP4 file

Firstly click "Add File" button or drag and drop MP4 file to this app. You can import more than one MP4 files to trim them at one time.


Step 2 Trim MP4 file

Click “Trim” button to open the trimming MP4 video window
There are three methods to set trim time:

Method 1: Enter the start time in the Start Time box, and then enter the end time in the End Time box.

Method 2: Drag the left and right triangles under the progress bar where you want to trim, and then the time will be shown in the Start Time box and End Time box for your reference.

Method 3: Click left scissors to set the current play position as where you want to begin your trimming. Click right scissors to set the current play position as where you want to stop your trimming.

After all set done, click "OK" to save the settings if you have completed video cutting. If you want to restore the settings to defaults, please click "Reset All" button.


After that, click “OK” to save the setting.

Step 3: Set trim MP4 without re-encoding or trim MP4 to other formats

Trim MP4 without re-encoding:

  • Click the "Profile" drop down button to select MP4 as output profile from the "General Video" category.
  • Then click "Setting..." button to open the "Advanced Settings" Window. Swith to the "Advanced" panel, double click H.264/MPEG-4 AVC on the right side of Video Codec to select Copy from the drop down list.

Trim MP4 to AVI, MOV, WMV, MPG, FLV, ProRes, 3GP etc video format

Click the "Profile" drop down button to select your desired video or audio format which you like trim MP4 as.


Step 4 Complete to trim MP4

Click the BIG ROUND button at the right bottom side to begin to trim MP4 file.

The Pros and Cons of the Current MP4 Trimmer

We usually store video files in MP4 files, however many of them cover a large space. Sometimes, we need to cut the file and keep only several minutes of the MP4 files. If so, we will need to find a MP4 trimmer. After searched and tested several MP4 trimmers on the internet, we can conclude some pros and cons of the current MP4 cutter.


  • Some of them are free.
  • Set the approximate time of beginning and end.


  • Can’t select the precise start and end time.
  • Only be available on Mac or Windows platform.
  • Can't handle mp4/m4v directly, has to be re-encoded.
  • Save only as .mov not .mp4/.m4v.