Viewer volume mixer
Give the viewer custom volume level options for individual things for the stream to then let them change it to his/her liking. NOT just one master volume option. I'm thinking more along the lines of: "This is one for the viewers, Give them more flexibility."
If one viewer thinks the game-play/music/commentary is too low/high, they should be able to fix that without disturbing the other viewers or spamming the streamer to change a certain audio output level. (NOTE: This will only effect the viewer audio output. NOT the streamer/other viewers.)
Game-play audio (Self explanatory, change game play audio level whilst watching stream. I find some streamers have really loud game-play audio and i cannot hear the commentary.)
Commentary (Most streamers might not have the best microphone setup, this will allow the viewer to change the output to their liking based on how loud/quiet the streamer is.)
Music/Donation alerts (Most streamers like to have their own custom donation notification sounds, as well as their own music tastes that some viewers might not like. This will change the output to both, although i would like to see if they can be separated.)
If anyone thinks this can be viable by Twitch or if Twitch thinks this might be a good idea to test, please let me know.

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nuvvz commented
100% agree, we need this asap. At least 2 volume options, one for background music from whatever source (you would just add a Spotify app for example) and another one for the rest of the stream audio like its now. Instead of one "speaker" to modify whole stream volume we would have additional "speaker" to adjust music volume and thats all. Simple as that. Life changing feature - you like the streamer but dont like his music? Just mute it and watch the stream and wait for your own song or play it on your own
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thefubsydude commented
Echoing others that have stated that the main benefit for me with this feature is that I would be able to watch a streamer while playing a game, without their game audio interrupting my game audio.
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madex111 commented
You need to create an option so that the user can
for yourself, turn off the music that the streamer listens to -
alcoholicherb commented
Please add a feature that allows the viewer to mute the chosen music by streamer/audience. I understand the concept of taking bits or donos for song requests, but it ruins the stream for a lot of people. I also understand the intention of a streamer personalizing their community/stream with their own music. However, we don't require a DJ whilst viewing most content on twitch. Thank You.
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IanSzot commented
This would be super easy to implement as the RTMP protocol that Twitch uses already supports multiple audio channels. But it would also be more expensive for Twitch to transcode/distribute the additional audio channels. I'd love to see this feature for a few more reasons:
1. Surround sound (would be even cooler if Twitch did the downmix from surround to stereo)
2. Multiple languages. You could watch one stream and choose which language you want to watch, would be nice for audio description for vision impaired viewers too. -
walnuts84 commented
I like to play games while watching, but I often have to stop as the audio interrupts my game. If I could choose to mix it differently, that would be awesome, nearly as good as having a streaming service on another screen/tv while playing games
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PhantomMethos commented
Allow viewers to listen in VOD audio mode during a livestream. Let the viewer toggle off the 2nd audio channel that has music.
I watch a streamer that has a lot of music on during his stream, but he has it set so the music isn't recorded in the VODs. Sometimes I would like to be able to watch the stream live without the music (like in the VODs). That way it is less distracting if I'm trying to multi-task or I can play my own music and still watch. Please provide the option to allow me as a viewer the option to toggle into VOD audio mode, or toggle off/on individual audio channels when multiple channels are provided by the streamer for a live stream.
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noggieB commented
Yes please!
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leenleonhart commented
Completely agree. If I want to listen to my own music while watching twitch I can't because streamers have their music :/
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leenleonhart commented
Completely agree. Tbh I don't even see much sense in being forced to listen somebody else's music ^^
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krux702 commented
100% this. There are streamers I don't watch/subscribe to mainly because I don't want to hear their music, even though the content is something I'd be interested in.
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RollerDerbyStreamingNZ commented
We stream live amateur sports and would like to have commentary in more than on language being able to have different audio tracks for different languages would be a great help
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ETMBeats commented
Greatest idea of all time
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Atomic_Flower commented
Sometimes when watching a streamer play a game, I can't hear their voice. I am hard of hearing so to be able to turn down the game volume or turn up the streamer's voice volume would help tremendously. I do think it should be up to the streamer to implement this feature. The volume may be fine for others but not for everyone.
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nextgentoas commented
It would be amazing if there was a plugin that differentiates the music from the actual volume of the stream. In this way you can still watch the stream but you can listen to your own music. I haven't wachted streamers numerous times because i found their music really bad.
If you were watching a game you would still hear the streamers voice and the sounds of the game but not the music. In this way you can either choose your own music or that of the streamer.
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jony_fulcos commented
Hola gente de www.twitch.tv, ayer estaba mirando un stream, y el streamer dijo "voy a poner esta canción pero me va a saltar copyright"
Entonces se me ocurrió la idea de que podrían agregar a la plataforma una opción que obligatoriamente el streamer separe la pista de música ya sea (Spotify o su reproductor de música) para que las personas que lo estén viendo puedan apagar la música con un botón y seguir escuchando a su stremer favorito.
Esto lo sugiero por que hay muchas personas que ayudan a su Streamer favoritos a subir momentos importantes a otras plataformas, entonces evitarían problemas de copyright.
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embrs commented
after viewing NMP streams i think it would be cool if streamers could split TTS to another audio track too, so I can lower/mute it and not have to listen
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necauqua commented
The year is 2035.
Twitch still did not implement the feature that would allow VOD friends to hear what the streamer is saying despite the entire stream being muted by copyright claims, or to control/mute the background music (or the streamer) - that Twitch already has all the infrastructure for, since RTSP has that and OBS has complete support for multiple audio tracks as well.
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ActorAaronBooth commented
I am constantly thinking about this idea and considering Twitch already allows streamers to have music and other audio on a separate track (so copyrighted music doesn't play on VODs and clips), why not simply allow a toggle for the viewer to only hear the one feed like VOD-mode audio or something). When I am trying to mod multiple streams at once, I usually have to mute all but one because 2-3 songs playing over each other at the same time just makes it pointless. Being able to cut the music from all of the streams I have open and only hearing the streamer's voice would be unbelievably helpful, especially since the system already allows streamers to split the audio. Even if it was just a mod-view only feature (at least at first) it would greatly help those that keep chats on the site a safe place. It's something that would be so easy for Twitch to implement that I'm actually surprised it has yet to be done.
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zefcowboy commented
If the streamer could also have a separate audio channel for music that would allow viewers to switch off the streamers music if they wanted to. For example sometimes the user wants to watch a stream but listen to his own music, or the user wants to play a bit of guitar whilst watching a stream.