关于录制视频保存为AAC格式

Question

通过浏览器调用摄像头录制的视频转成file传至后台进行下载，保存下来的mp4文件格式都是VP8,请问如何以AAC格式保存

file: new File(

    [_event.data],

        "tt-" +

        new Date().toISOString().replace(/:|\./g, "-") +

        ".mp4", {

            type: "video/h264"

        }

)

Answer 1

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