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fix: revert to actual trackID for audioMix (kCMPersistentTrackID_Invalid never fires tap)

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yumoqing 2026-06-27 17:59:45 +08:00
parent 7cfeec1f15
commit 70b264bcc8
1 changed files with 5 additions and 4 deletions
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9
Sources/PlayerRecorder.swift
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@ -356,17 +356,18 @@ final class PlayerRecorder: NSObject {
return return
} }
// 创建 AudioMix — 用 kCMPersistentTrackID_Invalid 匹配所有音频轨道 // 创建 AudioMix — 必须用实际 trackID
// HLS 流在 variant 切换时 audio track ID 会变，绑定具体 ID 会导致 tap 失效 // kCMPersistentTrackID_Invalid (=0) 实测不会触发 tap
let inputParams = AVMutableAudioMixInputParameters() let inputParams = AVMutableAudioMixInputParameters()
inputParams.trackID = kCMPersistentTrackID_Invalid inputParams.trackID = audioTrack.trackID
inputParams.audioTapProcessor = tapRef inputParams.audioTapProcessor = tapRef
let audioMix = AVMutableAudioMix() let audioMix = AVMutableAudioMix()
audioMix.inputParameters = [inputParams] audioMix.inputParameters = [inputParams]
playerItem.audioMix = audioMix playerItem.audioMix = audioMix
NSLog("[Recorder] ✓ Audio tap installed on playerItem, trackID=%d", audioTrack.trackID) NSLog("[Recorder] ✓ Audio tap installed: trackID=%d, asset tracks=%d, playerItem.audioMix set",
audioTrack.trackID, playerItem.asset.tracks.count)
} }
// MARK: - 开始录制 // MARK: - 开始录制