在智能媒体服务生成视频，标题字体怎么改都不变是为什么？

在智能媒体服务生成视频，标题字体怎么改都不变是为什么？["SubtitleTracks"] => array(1) {
[0] => array(1) {
["SubtitleTrackClips"] => array(1) {
[0] => array(13) {
["Type"] => string(4) "Text"
["X"] => int(0)
["Y"] => int(100)
["Font"] => string(14) "AlibabaPuHuiTi"
["Content"] => string(72) "【震撼来袭！揭秘未来科技巨头，颠覆你的想象力！】"
["TextWidth"] => float(0.9)
["Alignment"] => string(9) "TopCenter"
["AdaptMode"] => string(9) "AutoScale"
["FontSize"] => int(150)
["FontColorOpacity"] => int(1)
["EffectColorStyle"] => string(13) "CS0001-000001"
["FontFace"] => array(3) {
["Bold"] => bool(true)
["Italic"] => bool(false)
["Underline"] => bool(false)
}
["SubtitleEffects"] => array(1) {
[0] => array(4) {
["Type"] => string(3) "Box"
["Color"] => NULL
["Opacity"] => int(1)
["Bord"] => int(10)
}
}
}
}