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Fixed
Fixed in 2023.2.0a23
Votes
4
Found in
2020.3.46f1
2021.3.20f1
2022.2.9f1
2023.1.0b6
2023.2.0a4
2023.3.0a3
Issue ID
UUM-28836
Regression
No
Certain audio files can have their length halved when they are loaded with UnityWebRequest
How to reproduce:
1. Open the attached Project "mp3Bug" and load Scene "Main"
2. Enter Play Mode
3. Click the "Open streaming asset file" button in the Game View
4. Observe the value of "Audio length" in the Game View
Expected result: the length is reported to be 174.027s
Actual result: the length is reported to be 87.51s
Reproducible with: 2020.3.46f1, 2021.3.20f1, 2022.2.9f1, 2023.1.0b6, 2023.2.0a4
Notes:
- The Project contains 3 different audio files to test: TestMP3Audio.mp3 (length is reported twice as small as it should be), TestWavAudio.wav (the same audio file with a different format, length is reported correctly) and test.mp3 (length is also reported correctly)
- In the Project you can change the file being loaded by modifying the "File Name In Streaming Assets" variable in the "Audio Manager" Component of the "AudioManager" GameObject in the Scene
- The size of the faulty loaded mp3 file matches the actual file size
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Resolution Note (fix version 2023.2.0a23):
MPEG codec length estimation was improved by averaging frame sizes of the first 100 frames instead of looking at only the first one.