Naturpic Video Converter can not only convert between video formats but also extract audio from video. It can convert batches of files but you cannot set different conversion parameters for the items on the list, which means all of them will be converted to the same format. The application facilitates choosing the output format by referring not only to their names and extensions, but also to the names of the devices supporting them, which means that you will not need to worry about compatibility issues. Although the presets are accurately calculated for the best results, advanced users can customize these conversion parameters as desired. Although the accompanying help file states that the program allows cropping, rotating and flipping video, I could not find these tools anywhere, that is why I assume it is a false claim.
Its interface is neat and intuitive, yet a bit unattractive. The central element is a grid where the elements to convert will be shown. In addition to the names, you can also view other file properties, such as duration, frame size, file size, video codec, audio codec, etc. A few buttons above this list let you add, remove, preview and order the items on the list. There is another button to start conversion. Pushing this button will lead to another screen, where you should set the output format.
In general, Naturpic Video Converter is a fine application that can do simple conversion jobs seamlessly. One of its advantages is that it uses its own built-in codecs so there is no need for additional code installation. However, it definitely lags behind other converters. My advice: keep looking because I am sure you can find better software out there, even free.