Patent ID: 7634526

Claim:
A method for selectable quantization for frame data in an encoder, the method comprises: generating via the encoder a plurality of quantization matrixes of discrete cosine transform data based on a quantization table and a plurality of quantization scaling factors; analyzing via the encoder the plurality of quantization matrixes to identify one of the plurality of quantization matrixes having a best match of reduced data content and acceptable video quality, by, for each of the plurality of quantization matrixes, determining number of insubstantial data values in the quantization matrix; determining an acceptable level of insubstantial data values; and establishing the best match as the one of the plurality of quantization matrixes having the number of insubstantial data values in accordance with the acceptable level of insubstantial data values; selecting the one of the plurality of quantized matrixes; and quantizing via the encoder a plurality of discrete cosine transform data with the selected one of the plurality of quantized matrixes to produce quantized data.