# \[VP9-SVC\] - Chrome user's webcam stopped on Firefox

**URL:** <https://mediasoup.discourse.group/t/vp9-svc-chrome-users-webcam-stopped-on-firefox/4452>\
**Category:** mediasoup-demo\
**Created:** [August 10, 2022, 8:16am UTC](https://mediasoup.discourse.group/t/vp9-svc-chrome-users-webcam-stopped-on-firefox/4452 "2022-08-10T08:16:10Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![chainit](https://avatars.discourse-cdn.com/v4/letter/c/d78d45/32.png) [@chainit](https://mediasoup.discourse.group/u/chainit)\
**Post date:** [August 10, 2022, 8:16am UTC](https://mediasoup.discourse.group/t/vp9-svc-chrome-users-webcam-stopped-on-firefox/4452/1 "2022-08-10T08:16:10Z")

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Hello developers,  
Currently I have an experience of VP9 support functionality on mediasoup v3 demo interface  
I have a situation where the sharer’s camera (chrome) after a while (about 5-30s) is standing on the viewer’s side (firefox).

Reproduce:  
Step1: Visit the demo page and start the VP9 support meeting

> **[mediasoup demo](https://v3demo.mediasoup.org/?info=true&forceVP9=true)**
>
> mediasoup demo - Cutting Edge WebRTC Video Conferencing

Step2: User1: Join demo with Firefox browser & open camera  
Step3: User2: Join demo with Chrome browser & open camera  
Step4: Observe the webcam movement between Firefox and Chrome (after a while you will see the user’s webcam on the chrome side will be stuck on the Firefox side of the browser)

I don’t know what is the cause of this error, in core mediasoup or because the encode/decode between Firefox & Chrome is out of sync. I am using Firefox version 103.0.1 (64-bit) & Chrome version 104.0.5112.81 (64-bit)

Looking forward to receiving your feedback.  
Thank you

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**Author:** ![zaidiqbal](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/zaidiqbal/32/1498_2.png) [@zaidiqbal](https://mediasoup.discourse.group/u/zaidiqbal)\
**Post date:** [August 10, 2022, 8:52am UTC](https://mediasoup.discourse.group/t/vp9-svc-chrome-users-webcam-stopped-on-firefox/4452/2 "2022-08-10T08:52:27Z")

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This type of issue is mentioned here as well a few days ago:

> [@Video freeze in Firefox, mac m1](https://mediasoup.discourse.group/t/video-freeze-in-firefox-mac-m1/4431):
>
> Reproduce steps: Open demo mediasoup in ff last version on mac m1 [https://v3demo.mediasoup.org/](https://v3demo.mediasoup.org/) Open demo in different browser with same roomId what was in 1 step Leave window ff and open different(no matter what window exactly) After a while video in ff will freeze In common I catch that bug, but time to time video working properly I’ve checked all params. And as I see consumer is started, but consumer don’t get packets from server. Server send packet normally Audio is working well

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**Author:** ![zaidiqbal](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/zaidiqbal/32/1498_2.png) [@zaidiqbal](https://mediasoup.discourse.group/u/zaidiqbal)\
**Post date:** [August 10, 2022, 4:31pm UTC](https://mediasoup.discourse.group/t/vp9-svc-chrome-users-webcam-stopped-on-firefox/4452/3 "2022-08-10T16:31:55Z")

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This issue can be fixed by solution mentioned here:

> [@Video freeze in Firefox, mac m1](https://mediasoup.discourse.group/t/video-freeze-in-firefox-mac-m1/4431/13):
>
> that’s weird, but I’ve updated mediasoup-client to last version and I don’t catch that bug) thanks a lot for recommendation!

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**Author:** ![chainit](https://avatars.discourse-cdn.com/v4/letter/c/d78d45/32.png) [@chainit](https://mediasoup.discourse.group/u/chainit)\
**Post date:** [August 11, 2022, 3:40am UTC](https://mediasoup.discourse.group/t/vp9-svc-chrome-users-webcam-stopped-on-firefox/4452/6 "2022-08-11T03:40:52Z")

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Hi,  
We have tried with mediasoup 3.10.3 & lastest mediasoup-client. The issue is still there

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**Author:** ![zaidiqbal](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/zaidiqbal/32/1498_2.png) [@zaidiqbal](https://mediasoup.discourse.group/u/zaidiqbal)\
**Post date:** [August 11, 2022, 7:50am UTC](https://mediasoup.discourse.group/t/vp9-svc-chrome-users-webcam-stopped-on-firefox/4452/7 "2022-08-11T07:50:07Z")

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> [@chainit](#):
>
> lastest mediasoup-client

Try with mediasoup 3.9.0 as well.