A .D2V file is best thought of as a recipe card pointing to actual MPEG-2 sources like VOB/MPG/TS, storing frame pointers and playback flags that let AviSynth-based workflows perform operations like cropping, IVTC, or sharpening consistently, though it breaks when source files move, and its placement near VIDEO_TS or `.avs` projects typically identifies it as part of a structured encoding pipeline rather than a viewable video.

A D2V "index file" is a pointer-based project descriptor where DGIndex records byte positions, frame boundaries, and interpretation data, allowing tools like AviSynth to request exact frames in order without struggling through raw GOP structures, and since it only references the real VOB/MPG/TS files, altering those file locations causes the D2V to stop working.

Because a D2V depends on stable file paths, moving or renaming VOB/MPG/TS pieces makes the recipe invalid, as the lookup entries still point to their old locations; what the D2V actually contains is a detailed map built by DGIndex/DVD2AVI showing which source files define the timeline, how frames span multiple VOBs, and the exact byte positions for decoding through MPEG-2 GOPs, plus metadata such as frame rate, aspect flags, and interlacing/field-order cues, enabling AviSynth to serve frames accurately for filtering and encoding without repeatedly interpreting the raw stream.

From a D2V you can run full video-processing pipelines—crop, scale, denoise, sharpen, tweak color/levels, add subtitles, and apply IVTC/deinterlacing—and then encode the processed result with x264/x265, with the D2V merely stabilizing access to the MPEG-2 frames; media players fail to play it because it contains zero audio/video data and only outlines where frames live in VOB/MPG/TS files, so the only tools that can use it effectively are DGIndex/AviSynth, which read the index and decode the referenced content.

A .D2V file functions as a stable indexing layer, capturing DGIndex/DVD2AVI’s interpretation of timeline and cadence so AviSynth can pull frames correctly for tasks like cropping, scaling, noise cleanup, sharpening, levels tuning, subtitle burn-ins, deinterlacing, or IVTC, then send the processed stream to x264/x265, making the D2V’s job reliability rather than playback.

A .D2V stops working after renames or moves because it contains hard-coded references to each source segment, mapping frames against specific filenames and directories, so if `VTS_01_2. Here's more info on D2V file download have a look at our own web page. VOB` becomes `Movie_Part2.VOB` or the directory shifts drives, the index can no longer locate data, and DGDecode fails or returns empty video; keeping everything bundled or re-indexing to reflect new locations is the reliable remedy.