Video quality evaluation model training method, video quality evaluation method and related devices

The invention discloses a video quality evaluation model training method, a video quality evaluation method and related devices. The video quality evaluation model training method comprises the following steps: for a first training video of which the quality score is not marked in a first training video set, encoding by utilizing different encoders in an encoder set and different numerical valuesof each encoding parameter of the encoders, obtaining a plurality of coded distorted video pairs, wherein the quality levels of the first coded distorted video and the second coded distorted video ineach coded distorted video pair; performing model training on the twin network based on the data, and taking any one branch network in the trained twin network as a pre-training model; and performingfine adjustment training on the pre-training model by utilizing a second training video marked with a quality score in a second training video set, and taking the trained pre-training model as a videoquality evaluation model. T