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# helpdesks
steep-balloon-41261
09/11/2023, 1:17 PMThis message was deleted.
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dry-elephant-14928
09/12/2023, 1:19 AMcan you provide more details? what does "lagging" look like? is it higher latency or choppy?
is this reproducible across devices?
and which version of the client SDK and server are you running?
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boundless-summer-69195
09/12/2023, 4:44 AMYes it is reproducible in almost all android devices. I have tested with Oneplus Nord 2, samsung m42, redmi note 8 pro, samsung Tab A7 and Samsung Tab A8. Video was lagging in all these devices.
boundless-summer-69195
09/12/2023, 4:46 AMAnd network/bandwidth was also good still video was lagging.
I have used livekit_client version 1.3.0 in flutter and 1.4.4 in server.
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dry-elephant-14928
09/12/2023, 5:35 AM1.3.0 does not correctly support vp9. proper VP9 support will come in the next release (1.5.0). We've fixed multiple bugs on the server side too in 1.4.5. I recommend using vp8 for now and switching after 1.5.0 gets released in about a week.
dry-elephant-14928
09/12/2023, 5:36 AMsorry this isn't correctly documented. we've been discovering bugs and have been working to fix them one by one 😅
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boundless-summer-69195
09/12/2023, 5:38 AMI was using v8 but there was video freezing issue with vp8 codec ( if you remember ), so i cannot use vp8 again.
boundless-summer-69195
09/13/2023, 9:48 AMis there anyone to reply ?
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dry-elephant-14928
09/13/2023, 4:18 PMare you able to reproduce this with the example application? If VP8 is lagging something is definitely wrong. We have not observed any issues with VP8 publishing within our example app.
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boundless-summer-69195
09/14/2023, 5:43 AMI have used vp8 on server side and that causes the issue of freezing.
boundless-summer-69195
09/14/2023, 5:47 AMand if i use h264 on server side then the freezing issue is solved but then this video lagging issue appeared.
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dry-elephant-14928
09/14/2023, 5:48 AMWhat do you mean vp8 or h264 on the server side?
dry-elephant-14928
09/14/2023, 5:48 AMhow is the video being published?
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boundless-summer-69195
09/14/2023, 6:02 AMPrimarily We used vp8 codec with livekit version 1.3.0 But we get issue in Iphone to Samsung Tab A8 calls when oriantation changed video get freeze. and get this error log
AndroidVideoDecoder: Media decoder stop failed
AndroidVideoDecoder: java.lang.IllegalStateException
AndroidVideoDecoder: java.lang.IllegalStateException
at android.media.MediaCodec.native_stop(Native Method)
at android.media.MediaCodec.stop(MediaCodec.java:2338)
at org.webrtc.MediaCodecWrapperFactoryImpl$MediaCodecWrapperImpl.stop(Unknown Source:2)
at org.webrtc.AndroidVideoDecoder.releaseCodecOnOutputThread(Unknown Source:14)
at org.webrtc.AndroidVideoDecoder.access$200(Unknown Source:0)
at org.webrtc.AndroidVideoDecoder$1.run(Unknown Source:26)
freeAllBuffers: 4 buffers were freed while being dequeued!
AndroidVideoDecoder: deliverDecodedFrame failed
After research on this error we get that error is due to video codec so we changed codec vp8 to H264 which is getting lag in video