Pop up window "Video and audio codec not found". What codec is needed?
If you have problems with file playback, then simply visit the application's page for Combined Community Codec Pack and save an installation package. Close the application and launch the install procedure for the CCCP codec. Install it, reboot the PC and then open AV Video Karaoke Maker.
The CCCP contains all the necessary filters and codecs to enable playback functionality for a wide range of both audio and video files.