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Votes
1
Found in
2017.4.0f1
2018.4.0f1
2019.2
2019.2.8f1
2019.3
2020.1
Issue ID
1192132
Regression
No
[Timeline] Changing PlayableDirector.time causes gaps in audio
Reproduction steps:
1. Open project in "AudioLoopTest.zip"
2. Select "Sound" in Hierarchy window
3. Window -> Sequencing -> Timeline
4. Notice how audio track in the Timeline has no gaps
5. Enter Play Mode
Expected results: when "loop.cs" script changes PlayableDirector.time there will be no gaps in the audio played
Actual results: each time PlayableDirector.time is changed there is a gap and a crack noise in the audio played
Reproducible with: 2017.4.33f1, 2018.4.12f1, 2019.2.10f1, 2019.3.0b8, 2020.1.0a9
Notes:
1. Audio file format does not seem to influence the results (checked with .mp3 and .wav)
2. In some Unity versions, you might need to reattach TimelineAsset(SoundTimeline) to "Sound" Playable Director as it is removed.
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Resolution Note (2020.1.X):
This is expected behaviour. The audio system needs to know ahead of time about loop sections, and changing playableDirector.time will cause an immediate re-seek and delay/pop in the sound.