### Media3 Version Media3 1.0.0 ### Devices that reproduce the issue redmi k30pro running android 12 ### Devices that do not reproduce the issue _No response_ ### Reproducible in the demo app? Yes ### Reproduction steps SsaDecoder uses utf8 by default, if you play subtitles in utf16 encoding format, there will be problems ### Expected result ass subtitles display normally ### Actual result SsaDecoder's parseHeader method equalsIgnoreCase cannot judge equality normally ### Media [ass](https://drive.google.com/file/d/1_B0q6Rf0Bzm2GKZBpPwLoz-PCL3aBV6-/view?usp=share_link) ### Bug Report - [X] You will email the zip file produced by `adb bugreport` to dev.exoplayer@gmail.com after filing this issue.