METHOD AND A DEVICE FOR MANAGING ENCODED IMAGE FRAMES IN A DATA BUFFER

An improved method of managing encoded image frames in a data buffer is presented. Encoded image frames are buffered, for example in a pre-event buffer, in such a way that all stored, e.g., buffered, encoded image frames can be retrieved from the data buffer as a decodable video sequence and such that only those encoded image frames needed for obtaining a decodable video sequence having a pre-defined recording time may be stored in the data buffer. This may be referred to as pruning the data buffer in such a way that all stored encoded image frames can be retrieved from the data buffer as a decodable video sequence having a pre-defined recording time. Thereby, only the encoded image frames needed for generating the video sequence may be stored in the data buffer. Consequently, no extra space for storage of an extra GOP is needed in the data buffer.