Originally Posted by
charliemouse
Yes, definitely the case. I've had the same problem with AAC files for a few years, so it's possible it isn't to do with a change. One thing which may help Spoon in reproducing this, and spotting the issue (and confirm the files are as close the original stream as possible):
The live stream was captured with wmrecorder.
The aac was extracted from the flv container with flvextract, V2.2.1.1. This doesn't recode / and not set to remux etc - it just extracts the AAC or mp3 or whatever it contains directly.