A heat resistant cast steel containing, in mass %, C: 0. Certain embodiments provide media content owners the capability to exploit video processing capabilities using rich, interactive and compelling visual content on a network. It then determines whether the estimated error in the result of the first motion estimation is greater than a particular threshold. Said second intermediate layer is adapted to influence the resistance between said second FMF layer and said FMS layers at a predetermined read voltage in dependence on a relative orientation of said second and third magnetic moments, said read voltage creating a spin-polarized current amount lower than said write current amount.