如果用户的偏好设置没有指示其他曲目更合适,如何识别应启用该曲目在HTML中?
如果您为视频提供两个字幕轨道,请使用默认属性来标识要启用的轨道。
示例
您可以尝试以下代码来实现轨道的默认属性 -
<!DOCTYPE HTML><html> <body> <video width = "300" height = "200" controls autoplay> <source src = "/html5/foo.ogg" type = "video/ogg" /> <source src = "/html5/foo.mp4" type = "video/mp4" /> <track src = "subtitles_en.vtt" kind = "subtitles" srclang = "en" label = "English"> <track src = "subtitles_ru.vtt" kind = "subtitles" srclang = "ru" label = "Russia" default> Your browser does not support the video element. </video> </body></html>