Why isn't my new track in sync with the previous ones?

为什么我的新音轨不能与前面的音轨同步?。

youdao

The sound track is not in sync with the picture.

声迹与画面不同步。相反。

youdao

The sound track is not in sync with the picture.

声迹与画面不同步。相反。

youdao