You haven't looked hard enough then. The original theatrical version was available as a VHS/Beta. In 1983, after ABC-TV premiered its extended version, that was released on VHS/Beta as the "Special Longer Version". When the movies came out in a widescreen boxed VHS set, many people assumed (by the running time on TMP's box art) that it was again the SLV of TMP being re-released but that timing was a misprint. The only widescreen version of TMP on VHS is the theatrical version. Then along came DVD-Diector's Edition, retaining some of the SLV footage (including the Rhaandarite ensign scene I mentioned), but segments that weren't chosen by Robert Wise for his DE, were shunted off into the bonus features section.