Is a program from Allavsoft that helps you download videos from various specialized sites, on the developers page, it is claimed that the software works with more than a hundred different video hosting sites.
This was the first feature of the program, the conversion process goes on, after you have uploaded the video, you can convert it into different formats, for example: MP4, AVI, WMV, MOV, MPEG-1, MPEG-2, VOB, ASF, RMVB, DV , TS, Apple ProRes, WebM, FLV and others.
Convert Video Formats
Prism converts avi, mpg, vob, asf, wmv, mp4, mkv, amv and all video formats that have a DirectShow based codec
If you can play the video file using Windows Media Player, you can convert it using Prism
Load an ISO file to convert the video files it contains without needing to extract them first