A data rate control method includes determining an adjustment value of a first encoding parameter for encoding a first strip based on a quota of the first strip included in a frame that has not been encoded and based on a quota of at least one already encoded strip included in the frame. At least one of the quota of the first strip and the quota of the at least one already encoded strip relates to a number of shares of bits used for encoding a strip. The data rate control method also includes determining the first encoding parameter based on the adjustment value.