WM Splitter User Guide


WM Splitter is a really easy way to extract or remove portions of audio and video files. With a visual display, and an easy way to include and exclude segments of your media, you’ll be slicing and dicing video and audio files in minutes.


WM Splitter supports these popular video and audio formats:

  • AVI

  • WMV

  • ASF

  • WMA

  • MP3

  • MOV

  • MP4

  • MKV

If your media is not in one of these formats, use a conversion tool like WM Converter.

Here’s a quick summary of the editing process:

  1. Load your media file.

  2. Add Markers to split your media into Segments.

  3. Include or exclude segments.

  4. Output the resulting file.

Hint: Position the mouse arrow over any button to read what the button does.

Read on for the details…


How to Edit Media

Here are the basic steps for editing audio and video files:

  1. You’ll need to load a file to edit first. Click the Input button, then pick a file from the dialog:


2. Pick a file to edit, and click Open. The file is loaded and your display looks something like this:

3. Next, you’ll need to mark the part of the video to include by moving the yellow markers below the time line.

    Move the yellow markers to the start and end of your desired clip.

4. Click the Trim button to make a new file – clipped to your liking.


How to Navigate Media

Now that you know how to do basic editing, it’s time to learn how to move the selector to important parts of the audio or video file. Replay Media Splitter has a lot of really handy ways to get to the important parts of any media file. Here’s everything you need to know about navigating:

  • Use the Play button            to play the video or audio from the selection point.

  • The Navigation menu lets you move forward and back in various handy increments, and also gives you a quick reference to the various keyboard shortcuts:

About K-Frames

The left and right arrows move to the previous or next K-Frame. K-Frames are significant points of transition in a video file – usually the start of a new scene or camera shot. Moving between K-Frames is an efficient way to locate important segments quickly.

Here’s the technical side of K-Frames. Video files are a series of images. When video files are compressed, rather than compressing each image in the video, some images are calculated as a difference from the previous image. If there are several seconds with little movement, for example, rather than saving each frame of the same image, the video compressor just saves the differences between each frame, which may be small. This leads to efficient compression. However, there are times when two adjacent frames are very different, such as a new camera shot. In that situation, an entirely new starting frame – the K-Frame – is brought into the compression process. Ensuing frames are again calculated as differences from the K-Frame.

How to Join Files

Effective with version 1.6.903 WM Splitter can join files together into one file. The media must be of the same file type.

  1. To join files, click Join Manager from the Tools menu:


The Join Manager will open: