AVL/Audio Description(AD SWITCH)/HearingImpaired
文档来自：https://max.book118.com/html/2016/0706/47520221.shtm
转载于:https://www.cnblogs.com/jiangzhaowei/p/7300256.html
DTV 常用功能
AVL/Audio Description(AD SWITCH)/HearingImpaired
文档来自：https://max.book118.com/html/2016/0706/47520221.shtm
转载于:https://www.cnblogs.com/jiangzhaowei/p/7300256.html