DoItFast4U! is recommended to anyone who has tried the old methods of backing up DVDs and looking for a better solution.
The application demuxes the entire VTS by VobID and it includes subtitles, too. It can even demux all the VTS using IFO and VOB files located on your hard drive.
For each VTS, options are remembered, since every VTS is configured independently.
The application also runs DVD2AVI and creates projects you can work on in Avisynth. Because it determines frame count and it detects .avs files, potential CCE crashes are identified in time.
Other automatic processes performed by DoItFast4U! are checking subtitles and closed captioning, creating IDX and SUB files for use with subrip to ensure subtitle synchronization, running pulldown of video after encryption, renaming authored VTS and demuxing all VTSes at the same time.
DoItFast4U! has not been updated for a long time, and the last version, 1.4.0, was released in 2005 and improved with a variety of new features: the ability to autoswitch to VobID demux for each VTS that contains angles, added checkbox for manually selecting Telecine script, better detection for corrupt AVS 2.08 Scripts, restructured drop menus, changed behavior so if DVDs larger than 4.37Gb are created post-processing is still performed, and many others.
Due to its complexity, DoItFast4U! is rather recommended to experts.
On the other hand, the application has not been updated anymore for a long time and many users may prefer newer tools which are easier to use.
What this compact free tool does is automating the process of demuxing DVD movies and helping you to re-author your videos.