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Mixing two Audio Files using AVComposition on IOS - …
https://stackoverflow.com/questions/25873061/mixing-two-audio-files-using-avcomposition-on-ios
Mixing two Audio Files using AVComposition on IOS. Ask Question Asked 7 years, 4 months ago. Active 4 years, 7 months ago. Viewed 4k times 1 4. I'm trying to mix two audio files (lay one audio file on top of the other - not stitched together) but I'm struggling with learning AVFoundation on IOS. I've followed this answer ...
AVComposition - Apple Developer
https://developer.apple.com/documentation/avfoundation/avcomposition
A composition is a container for one or more tracks of media. Its tracks are instances of AVCompositionTrack that present media of a uniform type like audio or video. A track itself is a container for one or more segments of media, which are instances of AVCompositionTrackSegment, a type that represents a region of media in the source track.
Debugging AVFoundation Compositions ... - Apple …
https://developer.apple.com/library/archive/technotes/tn2447/_index.html
An AVAudioMix object manages the input parameters for mixing audio tracks. It allows custom audio processing to be performed on audio tracks during playback or other operations. You can also set the relative volumes and ramping of audio tracks.
AVPlayer audio metering for AVComposition
https://developer.apple.com/forums/thread/691432
I have an AVComposition playback via AVPlayer where AVComposition has multiple audio tracks with audioMix applied. My question is how is it possible to compute audio meter values for the audio playing back through AVPlayer? Using MTAudioProcessingTap it seems you can only get callback for one track at a time.
VideoLab/README-DETAIL-EN.md at develop · …
https://github.com/ruanjx/VideoLab/blob/develop/Document/README-DETAIL-EN.md
AVVideoComposition specifies geometry transformation and blending of tracks at any given time point, and AVAudioMix manages the mixing parameters of the audio tracks. we can use these three objects to create AVPlayerItem and from it we …
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