AudVidder

File converters are some of the most popular applications on the Internet and there's a whole array of options that you can pick from. One of such programs is AudVidder.
It's a neat program that helps you convert audio and video files to multiple files, join them together, preview videos or music tracks, adjust some file parameters and more.

Complicated and clogged user interface

The application sports a really complicated graphical interface, with small thumbnails for tools and lots of small sections. It's divided into multiple sections, one for retrieving files, a built-in media player and one with options for output files.
It also has a log section and some options that you can check out. It would have been nice if it allowed you to make some adjustments to the interface and it really needs a more fluent graphical interface.

Convert files easily

You simply need to browse your computer and pick the folder that has the videos you would like to work with. You can also pick the save video folder for output files. It lets you open multiple files at once, so it supports batch conversion.
It displays the file path, size, frame size and duration of your files. You can use the application to take snapshots of your videos and save them to your computer. You can adjust the video format, quality, frame size, sharpness and audio boost level.

Join multiple files together

It comes with the option to join multiple files together, you can work with avi, flv, mkv, mp4, mpg, mpeg, wmv and 3gp files. It lets you adjust the audio frequency and bit rate. It comes with a separate section with the actions that you've taken inside the application.
You can also trim files, simply set the start and end time. All in all, AudVidder is a very useful application that allows you to convert multiple files, join them together, take snapshots and even trim videos.