Method of compressing a video sequence which comprises the following steps: - a first step in which the compression is carried out at constant bit rate of the sequence, the sum of the sizes of the compressed images corresponding to a given period of the video being constant, and during which, for each image, the size thereof in bytes and the compression factor used are extracted; - a step of normalising the values of the compression factor associated with each image in order to optimise this factor under the constraint of the buffer of the receiver provided for decompressing the sequence; - a second step of compressing the sequence using the normalised values of the compression factor for each image in the sequence; where the normalisation step comprises the simulation of the filling level of the buffer of the receiver provided for decompressing the sequence; and where the simulation of the filling level of the buffer of the receiver provided for decompressing the sequence comprises the following steps: - a step of initialising the buffer to an arbitrary initial value; - for each new image in the sequence, calculating a new filling level according to the size of the new image and taking account of the consumption of the data by the decompression; - if there is neither overflow nor famine of the buffer, the following image is looped onto; - if there is overflow or famine, a step of determining an image already processed in the sequence, associated with an extremal value of the compression factor associated with these images already processed, the determined image being the oldest in the sequence, associated with that extremal value; - a step of modifying the value of the compression factor associated with this determined image, reducing the size of the image in case of famine, increasing the size of the image in case of overflow; and - a step of returning back to the calculation of the simulation as far as this determined image. - a first step in which the compression is carried out at constant bit rate of the sequence, the sum of the sizes of the compressed images corresponding to a given period of the video being constant, and during which, for each image, the size thereof in bytes and the compression factor used are extracted; - a step of normalising the values of the compression factor associated with each image in order to optimise this factor under the constraint of the buffer of the receiver provided for decompressing the sequence; - a second step of compressing the sequence using the normalised values of the compression factor for each image in the sequence; - a step of initialising the buffer to an arbitrary initial value; - for each new image in the sequence, calculating a new filling level according to the size of the new image and taking account of the consumption of the data by the decompression; - if there is neither overflow nor famine of the buffer, the following image is looped onto; - if there is overflow or famine, a step of determining an image already processed in the sequence, associated with an extremal value of the compression factor associated with these images already processed, the determined image being the oldest in the sequence, associated with that extremal value; - a step of modifying the value of the compression factor associated with this determined image, reducing the size of the image in case of famine, increasing the size of the image in case of overflow; and - a step of returning back to the calculation of the simulation as far as this determined image.