Nanosecond laser treatments (KrF laser 248 nm wavelength, 20 ns pulse duration) and femtosecond laser treatments (Tisapphire laser, 800 nm wavelength, <30 fs pulse duration) were applied for crystallization of amorphous silicon nanoclusters in silicon-rich nitride films. The energy densities for crystallization of the silicon nanoclusters were found for films of various non-stoichiometric parameters (SiNx:H, 0.6≤x<1.33) grown on silicon or glass substrates. The effect of laser assisted formation of amorphous Si nanoclusters in SRN films with relatively low concentration of additional silicon atoms was observed. The developed approach can be used for the creation of dielectric films with semiconductor nanoclusters on non-refractory substrates.