This specific build number (4.0.11.39) is notable for its stability and bug fixes compared to earlier v4 releases (like 4.0.8 or 4.0.10). Users have reported that .11.39 resolves crashes related to large VOB imports and improves MKV container compatibility.
The software has received multiple high ratings from software review sites, including: Products: TMPGEnc Authoring Works 4 Reviews - PEGASYS TMPGEnc.Authoring.Works.4.0.11.39.Retail.