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# announcementss
steep-balloon-41261
12/23/2021, 4:42 PMThis message was deleted.
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dry-elephant-14928
12/23/2021, 5:01 PMtry turning off dtx when publishing the track.
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most-motorcycle-47724
12/23/2021, 5:04 PMWhere do I do that @dry-elephant-14928?!?
Also where can I force to replace the below SDP in LiveKit ReactKS code ?
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sdp.replace('useinbandfec=1', 'useinbandfec=1; stereo=1; maxaveragebitrate=510000');d
dry-elephant-14928
12/23/2021, 5:06 PMno, it's one of the publish options: https://docs.livekit.io/client-sdk-js/interfaces/trackpublishoptions.html
livekit doesn't support munging of SDP
dry-elephant-14928
12/23/2021, 5:07 PMwhich option are you trying to set? perhaps we can expose that via the SDK as an option
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most-motorcycle-47724
12/23/2021, 5:11 PMPlease do so, to make AUDIO quality good enough we would have to munge SDP sometime @dry-elephant-14928 Now I know that whatever setup we do, its audio will be PHONE-quality only 😞 We will need to replace the standard MONO into STEREO and a few more.
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clean-journalist-37526
12/23/2021, 5:12 PMyou can convert a video or mp3 file with ffmpeg
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ffmpeg -i someMusic.mp3 -c:a libopus -page_duration 20000 -vn someMusic.ogg Copy code
livekit-cli join-room --url <ws://localhost:7880> --room yourRoomName --identity someId --api-key yourKey --api-secret yourSecret --publish someMusic.oggd
dry-elephant-14928
12/23/2021, 5:13 PMIs stereo the option you are trying to set? are there anything else?
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dry-elephant-14928
12/23/2021, 5:14 PM@clean-journalist-37526 is right, if you can programmatically publish the track to livekit directly, that'd be better than trying to mess with browser encoding options.
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most-motorcycle-47724
12/23/2021, 5:15 PMNahhh @clean-journalist-37526 this is Music Theatre application, all LIVE mate 😄 We have to LIVE mixing voice + background music (something like Karaoke), that is the intention.
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most-motorcycle-47724
12/23/2021, 5:16 PM@dry-elephant-14928 I believe that the quality of the audio is extremely important and being able to publish truly STEREO music is something we should be able to do. Something like the below will help much.
sdp = sdp.replace('useinbandfec=1', 'useinbandfec=1; stereo=1; maxaveragebitrate=<max_bitrate*1000>');
Thanks.
most-motorcycle-47724
12/23/2021, 5:20 PM@ambitious-painter-74948 @bored-queen-98073
most-motorcycle-47724
12/23/2021, 5:27 PM@dry-elephant-14928 if possible, we should be able to try trial/error the option below also to completely avoid variable bitrate for audio, and instead of
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a=fmtp:111 minptime=10; cbr=1most-motorcycle-47724
12/26/2021, 6:44 AMWe are "munging" the LiveKit SKD client, and will test. Will share the code changes here.