A:Answer In order to edit the existing movie, you will need to export the movie from DVD to desktop, and the movie format will need to be compatible with VideoStudio System Requirements, then it should be all doable. Here are the requirements:
Export Formats
Video: AVC, AVI, DV, GIF89a, HDV, M2T, MOV2 (H.264/HEVC1), MPEG-1/-2/-4(H.264/ HEVC1), UIS, UISX, WebM, WMV, XAVC S, 3GP
Device: Apple iPod/iPhone/iPad/TV, Android devices, Sony PSP/PS3/PS4, Nintendo Wii, Microsoft Xbox compatible formats, DV, HDV
Disc: DVD, AVCHD, SD Card, Blu-ray ($)
Web: YouTube, Vimeo
Audio: M4A, OGG, WAV, WMA
Image: BMP, JPG
Import Formats
Video: AVCHD (.M2T/.MTS), AVI, DV, DVR-MS, GIF89a, HDV, M2TS, M4V, MKV, MOD, MOV2 (H.264/HEVC1), MPEG-1/-2/-4(H.264/HEVC1), TOD, UIS, UISX, WebM, WMV, XAVC S, 3GP, Non-encrypted DVD titles
360 Video: equirectangular, single fisheye, dual fisheye
Audio: AAC, AC3, Aiff, AMR, AU, CDA, M4A, MOV, MP2, MP3, MP4, MPA, OGG, WAV, WMA
Image: BMP, GIF, JPG, MPO, PNG, PSD, PSPImage, TGA, TIF/TIFF, UFO, WBM, WBMP, WMF, Camera RAW