全ての4x4量子化マトリクスの指定。
カンマで区切った16個の整数。実験には良いがコマンドがやたらと長くなる。特に他の量子化マトリクスも使う場合は厳しいだろう。
Sets all 4x4 quantisation matrices. The input must be a comma seperated list of 16 integers. This might be good for experimenting but your command line could quickly become very long, especially when defining other quantisation matrices as well.
