- Chunks may alter separation results

(update: chunks are now replaced with batch mode on even 4GB cards, feature was introduced in one of beta patches and is available in v. 5.6, and you cannot use chunks experimentally in this version if batch mode gives you some vocal pop-ups vs 11GB GPUs which is a pretty common issue in 5.6; the old text for old UVR pre 5.6 code with chunks available follows).

 

E.g. a bigger chunk value will less likely cause instruments disappearing.

Chunks 1 is not the same as chunks full (disabled). Also, chunks may cause distorting briefly some vocals in the middle when split is being made. Chunks “auto” is calculated individually for your VRAM and RAM configuration (also song length), so the result will differ among various users for the same song. Maximum chunks value differ for various MDX models (e.g. NET 1 will allow for bigger values than newer Inst models with higher training frequency). You can test what is the maximum supported chunk size for your computer specs till you encounter crash (e.g. for 5:11 song and inst main 496 - chunks 15 (20 for 30 s song) for 4GB desktop card, 38 for 6GB laptop card (50 for NET 1 model), and around 50 for 11GB). Sweet spot for 3:39 track is chunks 55 (works at least on 16GB VRAM) - more than that gives worse results. Also on some GPUs/configuration you may notice some variations in very short vocal bleeding not (fully) associated with chunks which don’t happen on e.g. x-minus or other configurations (1660 Ti vs 1080 Ti and 960 (we don’t know what causes it). In this case, you can only alleviate the issue by changing chunks. Be aware that low maximum chunks on 4GB cards beside more sudden vocal residues and cuts in the result, may cause also specific artefacts like e.g. beeping not existing on e.g. 11GB card (the issue happen in Kim vocal model).

 

- FileNotFoundError: [Errno 2] No such file or directory: 'C:\Users\[user]\AppData\Local\Programs\Ultimate Vocal Remover\models\Demucs_Models\model_data\model_name_mapper.json'

 

> “I wrongfully removed this lol. fixed by downloading demucs again before closing the current open window. glad I discovered it before that” - mohammedmehditber

 

_________________________________________________________________________