223519 2021-03-19 09:38:10 -0700 decodeAudioData chops off beginning portion of audio file 2021-03-26 09:39:13 -0700 1 1 1 Unclassified WebKit Web Audio Safari 14 Mac (Intel) macOS 10.15 NEW InRadar P2 Normal --- 1 joe webkit-unassigned ap cdumez webkit-bug-importer oldest_to_newest 1741742 0 joe 2021-03-19 09:38:10 -0700 In Safari, decodeAudioData is returning a buffer that is missing the first ~3000 samples. For short audio files (like drum sounds for example) this can have a significant impact on the sound. To recreate this bug, do the following in both Chrome and Safari: Go to https://jsfiddle.net/hanley101/kbjh8sz7/17/ Load this file: https://www.dropbox.com/s/48yub3sfa2caw7x/TomLo_Ac.mp3?dl=0 Hit Decode to see the buffer length and duration. Compare between Chrome and Safari and you'll see Safari's buffer length and duration are smaller. NOTE: The jsfiddle should also play the file when you hit decode, though this is only working in Chrome, not sure why. 1744206 1 webkit-bug-importer 2021-03-26 09:39:13 -0700 <rdar://problem/75889203>