MP4 video file does not play audio in Quicktime on macOS 10.14 - Super User
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![SOLVED] QuickTime Can't Open and Play MP4 File | AppGeeker](https://www.appgeeker.com/images/aisee/load.jpg "SOLVED] QuickTime Can't Open and Play MP4 File | AppGeeker")
SOLVED] QuickTime Can't Open and Play MP4 File | AppGeeker
2 Easy Ways to Fix QuickTime Player Won't Play MP4 Video File on Mac
3种方法来使用专业版Quicktime 7软件将MOV文件转换成MP4格式
