a-one dvd ripper is an easy to use software let you backup dvd by converting it to mpeg4(divx,xvid),avi,vcd(mpeg1) or svcd(mpeg2) format files with almost same quality, and only 10% size.quick setting panel lets you choose subtitle,audio track,frame rate audio quality and so on for each task in the list easily.its preview display enables you to observe the whole converting process, making the waiting time enjoyable!(1) convert dvd to mpeg1,mpeg2,mpeg4,avi. (2) convert dvd to mpeg4(divx,xvid), same quality,10% size.(3) convert dvd to vcd,svcd.(4) convert dvd to ipod mp4 file.(5) support ripping dvd by custom file size.(6) support selecting subtitle and audio track.(7) selectable program chain.(8) support beginning rip at specified point.(9) automatically shut down your computer after long time conversion.