Digital Media Converter Pro can convert many more audio and video file types. It uses hyperthreading technology to take advantage of the multi-core processors available on newer PCs, making it up to 70% faster. The Pro version also includes sophisticated CD ripping capabilities, making it easy to turn CD audio into files. For a complete list of the differences, please see our comparison chart.

Q. What is the best file format to use?

There is no one best file format. In some cases, what format to use is determined by the use you have in mind. For instance, if you intend to play video on your Apple iPod, you should create MP4 files. For an explanation of digital audio and video file formats and advice on selection, please see our Guide to Audio and Video Files.

Q. What is bit-rate?

We use the term bit rate when speaking of video or audio quality and file size. It defines how much physical space one second of audio or video takes in bits. The higher the bit rate the better the source quality and larger the file.

For video, smaller frame sizes and lower frame rates will mean that you can use a lower bit rate without losing any visible quality. The smaller number of smaller frames simply take less information to describe.

Q. What should I do if Digital Media Converter Pro fails to convert my file?

There are several possible reasons that a file may not be converted. One is that the file itself is not a valid media file. Try playing the file in the appropriate player (Windows Media Player for AVI, WMV, MP3, etc. QuickTime Player for MOV, AAC, MP4, M4A, etc. RealPlayer for RealVideo or RealAudio). See whether the file plays completely from beginning to end without problems.

If the file conversion always fails at a particular point, for instance, at the 11:21 point in a video file, try converting the parts before and after that "bad spot" in the video. You can do this using the Tools >> Split command, which is explained here.

Q. Can I convert files or rip CDs and DVDs protected by Digital Rights Management?

The owners of the legal rights to audio and video sometimes use various techniques to control who can copy or play files. These techniques are called “Digital Rights Management”, often abbreviated as “DRM”. One type of DRM is copy protection, which prevents copying a media file or disc. Another common DRM technique prevents playing a recording on any computer except the one it was made on. If a file cannot be converted because of DRM, the program will inform you that it is protected and cannot be converted.