"Alternative content of time-dependent media" as required in 1.2.8 is applied to live audio. Although it is required to prepare accurate alternative contents for live audio such as radio broadcasting, this is a very difficult achievement standard.
|Principle||Perceivable||Information and user interface components must be presentable to users in ways they can perceive.|
|Guideline||Time-based Media||Provide alternatives for time-based media.|
|Alternative content of time-based media that presents equivalent information to content that only includes live audio is provided.|