如何将视频与音频合并？

Question

如何将video.mp4与audio.mp4合并？

我使用Swift App下载Reddit视频

Videos downloading without sound

我想要代码将video.mp4与audio.mp4合并

或

将audio.mp4转换为audio.mp3

Answer 1

您可以将audio.mp4转换为audio.mp3

let audioURL = ""
let outputUrl = ""

let asset = AVAsset.init(url: audioURL)

let exportSession = AVAssetExportSession.init(asset: asset, presetName: AVAssetExportPresetHighestQuality

exportSession?.outputFileType =  AVFileTypeMPEGLayer3


exportSession?.outputURL = outputUrl

exportSession?.metadata = asset.metadata

exportSession?.exportAsynchronously(completionHandler: {
    if (exportSession?.status == .completed)
    {
        print("succees")



    }
    else if (exportSession?.status == .cancelled)
    {
        print("cancelled.")
    }
    else
    {
        print ("Error is \(String(describing: exportSession?.error))")

    }
})