WMV Merger is an application designed to help you merge video files of multiple formats (including ASF, FLV, AVI and WMV) and convert them to WMV or ASF. It can be easily used by novices.

The tool comes with a standard interface in which you can import videos by using either the file browser or "drag and drop" method. In the list you can check out the name, transition and duration for each clip. Once you specify the output format, directory and filename, you can proceed with the encoding job.

In terms of file support, the application lets you load anything under formats like MPEG, MPG, AVI, WMV, DAT, ASF, VOB, OGM, DIVX, and DIV.

Furthermore, you can change audio and video settings when it comes to the resolution, frame rate, resize mode and bit rate. Options can be restored to their default values at any time. Unfortunately, your files can only be merged as WMV or ASF.

On top of that, you can select the transition duration and effects (e.g. stripe, circle, heart), move items up and down in the list, remove an item from the queue or clear the entire thing, preview clips, and others.

The video processing tool runs on a moderate amount of system resources, has a good response time, quickly finishes a task and generally delivers a fair image and sound quality. On the other hand, there is no help file available, the interface is outdated and WMV Merger failed a couple of conversion tasks during our testing. We recommend you look for something more advanced than this tool.

Taking everything into consideration, we can state that WMV Merger is a lightweight tool for quick merging of two or more WMV video files. It looks and feels a little rough around the edges overall, and it’s not always capable of properly joining the selected files together.