[en] Based on 7093 observations with photoelectrical photometrical measurements of 191 Mira stars, the following equations (from the papers [1] to [18]) give the basis to establish the Inherent Stellar Encocooning with the spectro-photometric characteristics of the red giant variable stars, especially the Miras, which have large amplitudes (∼50% of giant variables). The specific basis that justifies a progressive covering with ionized molecules, cold gases, dust and grains are: The relation of the visual amplitudes A_v=A_r+E_A whose real luminosity separate the intrinsic pulsation and amplitude excess effects due to the presence of molecules [145] and an opaque envelope of cool gases; The relation of the visual absolute magnitudes M_v =M_vr(P)+M_a(δ_TiOV) which is affected by an inherent absorption and/or occultation, and; The relation that defines the probable absolute luminosity and depends on the period and the (Sa) spectral type at maximum M_v=-2.25logP+0.54S_a+1.37. This is the initial Baryonic Dark Matter. These preliminary fundaments are confirmed by the inherent reddening sequence of Miras on the (V-R, R-I) photometric diagram (V-R) = 0.128(R-I)³ + 1.05 which give the individual and median photometric solution to determine the visual absolute bright with M_v =A'+W'(V-R) and M_v =A''⁺W''⁽R-I)³ where the median values of A', W', A''^and W^are -5.83±0.08, 2.26± 0.03, -3.45±0.13 and 0.289±0.005 respectively. This result permits us to estimate the distance of these stars, the inherent spectral darkening sequence and the simplest spectro-luminosity relation (derived with the color V-R) is M_v = M₀ + αS³ where M₀= -3.12±0.08 mag and α 0.0172 and it is a general equation to determine the visual absolute magnitudes and the visual inherent attenuation of Miras A = αS³. These last four expressions are independent of the period for which they can be applied to the giant stars of the same spectral type but with semiregular and irregular variation curves (reaching the 100% of M giant variables). The set of all these relations justifies: The formation of cocoon-star systems; the progressive attenuation of the visual flux and the increasing of the infrared flux; the progressive loss of the photospheric diameter definition and a strong increasing of backwarming due to the transparence decrease of the massive stars cocoons. This full process is developed during the M0-M10 short transition. The main evidences that confirm this new stellar structure are: The strong opacity affects the dimensions of the photospheric discs and therefore they are doubtfully measured, especially in advanced stars; the cocoon star structure of Mira revealed in a HST image and the Mira's inherent reddening. The stellar encocooning concept suggests the existence of an absolute order in which the red giant stars change their condition marking the end of their normal stellar existence and the beginning of new atypical stellar objects. The formation of new objects depends on the initial mass. The advanced encocooning, with a total extinction of the central star, justifies the formation of dark giants with less than a solar mass. The dark giants as residual objects, without visual flux, are dark matter. The ubiquity of these and the formation of conglomerates with successive of successive stellar generations explain up to a 98.9% the baryonic dark matter, which is necessarily located within the spirals of the galaxies. On the other hand, if the cocoon-star system is more massive than the Sun, then it can justify the origin of objects such as: Miras as producer of cataclysms, Miras as maker of planetary nebulas, bipolar explosive Miras or they can finish as novas (author)