# Recording demo codec issue

**URL:** <https://mediasoup.discourse.group/t/recording-demo-codec-issue/2440>\
**Category:** Integration\
**Created:** [February 13, 2021, 6:28pm UTC](https://mediasoup.discourse.group/t/recording-demo-codec-issue/2440 "2021-02-13T18:28:01Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![new\_user](https://avatars.discourse-cdn.com/v4/letter/n/e19adc/32.png) [@new\_user](https://mediasoup.discourse.group/u/new_user)\
**Post date:** [February 13, 2021, 6:28pm UTC](https://mediasoup.discourse.group/t/recording-demo-codec-issue/2440/1 "2021-02-13T18:28:01Z")

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Hi, i’m trying to test mediasoup recording demo server and app, everything looks good but i have an issue on codecs.  
server and app serves successfully, but when i’m trying to start recording on app there is an error in console

```auto
Uncaught (in promise) TypeError: no matching codec found
    at Object.reduceCodecs (ortc.js:702)
    at Chrome74.send (Chrome74.js:167)

```

and in server i have this error

```auto
UnhandledPromiseRejectionWarning: UnsupportedError: no compatible media codecs

```

i try to install multimedia codecs but it does not fix my issue.

os : ubuntu 20.04  
browser : chromium, chrome, firefox

All The Best…

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<div class="post-metadata">

**Author:** ![copiltembel](https://avatars.discourse-cdn.com/v4/letter/c/e9a140/32.png) [@copiltembel](https://mediasoup.discourse.group/u/copiltembel)\
**Post date:** [February 13, 2021, 7:29pm UTC](https://mediasoup.discourse.group/t/recording-demo-codec-issue/2440/2 "2021-02-13T19:29:38Z")

</div>

Can you please post the link to the “mediasoup recording demo server and app” that you are testing?

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<div class="post-metadata">

**Author:** ![new\_user](https://avatars.discourse-cdn.com/v4/letter/n/e19adc/32.png) [@new\_user](https://mediasoup.discourse.group/u/new_user)\
**Post date:** [February 14, 2021, 6:13am UTC](https://mediasoup.discourse.group/t/recording-demo-codec-issue/2440/3 "2021-02-14T06:13:27Z")

</div>

Here you are

[Mediasoup recording example](https://github.com/ethand91/mediasoup3-record-demo)

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<div class="post-metadata">

**Author:** ![copiltembel](https://avatars.discourse-cdn.com/v4/letter/c/e9a140/32.png) [@copiltembel](https://mediasoup.discourse.group/u/copiltembel)\
**Post date:** [February 14, 2021, 9:55am UTC](https://mediasoup.discourse.group/t/recording-demo-codec-issue/2440/4 "2021-02-14T09:55:29Z")

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Thanks! That example is not the [mediasoup-demo](https://github.com/versatica/mediasoup-demo) that this forum section was intended for, so you might have better luck writing directly to the author on github.

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<div class="post-metadata">

**Author:** ![new\_user](https://avatars.discourse-cdn.com/v4/letter/n/e19adc/32.png) [@new\_user](https://mediasoup.discourse.group/u/new_user)\
**Post date:** [February 14, 2021, 10:24am UTC](https://mediasoup.discourse.group/t/recording-demo-codec-issue/2440/5 "2021-02-14T10:24:36Z")

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Oh ok thanks.  
by the way if anyone know something about it please help me.

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<div class="post-metadata">

**Author:** ![ethand91](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/ethand91/32/14_2.png) [@ethand91](https://mediasoup.discourse.group/u/ethand91)\
**Post date:** [January 18, 2022, 8:24am UTC](https://mediasoup.discourse.group/t/recording-demo-codec-issue/2440/6 "2022-01-18T08:24:17Z")

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This issue was reproduced, currently in the process of fixing it.

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<div class="post-metadata">

**Author:** ![ethand91](https://yyz2.discourse-cdn.com/free1/user_avatar/mediasoup.discourse.group/ethand91/32/14_2.png) [@ethand91](https://mediasoup.discourse.group/u/ethand91)\
**Post date:** [January 18, 2022, 9:08am UTC](https://mediasoup.discourse.group/t/recording-demo-codec-issue/2440/7 "2022-01-18T09:08:05Z")

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Done, it should work now.