Twitch uses audio fingerprinting to mute archived VODs

If the platform uses Audible Magic, the system can compare the stream audio against reference fingerprints and trigger an automated response, such as muting the archived video or flagging the stream for copyright review.

As part of Twitch’s ongoing efforts to help you understand when unauthorized copyrighted material may be included in the content you stream, we proactively employ an audio recognition system that scans VODs and clips for copyrighted audio. When copyrighted audio is detected in these videos, ...

If third party audio is detected anywhere in the 30-minute scanned block, the entire 30 minutes will be muted. ... Audio Recognition will only be run against audio in VODs. We are not scanning live broadcasts and there is no automated takedown ...

When it matches a track, it mutes the entire affected segment — typically in blocks around 30 minutes — in the recorded VOD. Key facts: It’s music detection, not profanity detection. Twitch does not mute VODs for swearing.

Twitch's scanner mutes matched VOD audio in big blocks — commentary included. The fix is keeping music out of the recording in the first place.

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Twitch’s decision to mute VODs by default isn’t arbitrary. It’s rooted in a mix of technical constraints, user behavior analytics, and platform optimization. The primary reason? Autoplay policies. Twitch, like many streaming platforms, restricts autoplay for videos with audio to comply with browser and device policies aimed at reducing unwanted noise in public or shared spaces.

I think if you go to settings>stream you will probably see your service is set to Custom and not Twitch....you have the streamlabs plugin installed which changes this if you don't disable it in their settings, that would break the VOD track ...

We check your audio against recordings known to trigger Twitch's audio detection and DMCA claims. ... Based on the match confidence, we estimate the likelihood of VOD mutes or DMCA takedowns. ... If a match is found, we suggest similar stream-safe tracks you can use without DMCA risk. Strong match found. This track will likely cause muted VODs/clips or could trigger DMCA notices. Partial match detected. The track may cause issues depending on how Twitch's detection processes it.