# Video not being rendered

**URL:** <https://devforum.zoom.us/t/video-not-being-rendered/137214>\
**Category:** Web\
**Tags:** video-sdk, sdk\
**Created:** [September 9, 2025, 7:17pm UTC](https://devforum.zoom.us/t/video-not-being-rendered/137214 "2025-09-09T19:17:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![meet-jeavio](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/meet-jeavio/32/69404_2.png) [@meet-jeavio](https://devforum.zoom.us/u/meet-jeavio)\
**Post date:** [September 9, 2025, 7:17pm UTC](https://devforum.zoom.us/t/video-not-being-rendered/137214/1 "2025-09-09T19:17:26Z")

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**Description**  
This is observed couple of times during past 6 months. What happens is when both participants connect, let’s say them Alice & Bob. So now Alice is able to see self video & Bob video, but Bob is not able to see Alice video, although Bob is able to see self video.

**Browser Console Error**  
{“type”:“INVALID\_PARAMETERS”,“reason”:“user is not send video”,“errorCode”:6001}

**Which Web Video SDK version?**  
2.1.10

**Device (please complete the following information):**

- Device: Dell laptop, Macbook
- OS: Windows 10, Windows 11, MacOS
- Browser: Chrome, Edge

**Additional context**  
Roughly saying this happens like once in a 100/200 calls, and one/two times earlier it happened frequently.

Zoom session ID - kA4/hSqvTWSXcGInIgocOg==

User 1 info:

{

```
    "userId": 16781312,

    "displayName": "Alice",

    "isHost": false,

    "audio": "",

    "bVideoOn": false,

    "userGuid": "4A\*\*\*F6-A\*\*E-B\*\*0-B\*\*4-\*\*\*\*\*\*\*2442A2",

    "isPhoneUser": false,

    "isInFailover": false,

    "isManager": false,

    "isAllowIndividualRecording": false,

    "isVideoConnect": true,

    "subsessionId": ""

}

```

User 2 info:  
{

```
    "userId": 16778240,

    "displayName": "Bob",

    "isHost": false,

    "audio": "computer",

    "muted": false,

    "bVideoOn": true,

    "userGuid": "6F2\*\*\*18-6\*\*3-0\*\*2-A\*\*1-\*\*\*\*\*\*\*B834",

    "isPhoneUser": false,

    "isInFailover": false,

    "isManager": false,

    "isAllowIndividualRecording": false,

    "isVideoConnect": true,

    "subsessionId": ""

}

```

We have same data for other calls, there we don’t have this video call not rendering issue.

---

<div class="post-metadata">

**Author:** ![vic.yang](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/vic.yang/32/24656_2.png) [@vic.yang](https://devforum.zoom.us/u/vic.yang)\
**Post date:** [September 10, 2025, 6:45am UTC](https://devforum.zoom.us/t/video-not-being-rendered/137214/2 "2025-09-10T06:45:04Z")

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Hey @meet-jeavio

Thanks for your feedback.

> kA4/hSqvTWSXcGInIgocOg==

After analyzing the logs, we found that UserID: 16781312 did not call `stream.startVideo` to start their self video. As a result, when UserID: 16778240 attempted to call `stream.attachVideo(16781312)`, it returned the error **“user is not sending video.”**

You mentioned that UserID: 16781312 could see their self-view. How was the video captured? Was it using the `localVideoTrack.start` method? If so, this is not correct. Methods on `localVideoTrack` are only for self-preview and will **not** send video to remote users.

Below is the detailed sequence of user actions:

UserID: **16781312**

_2025-09-08 10:37:36_ Join session

_10:37:40:818_ attachVideo(16778240)

_10:37:40:823_ detachVideo(16778240)

_10:37:40:824_ attachVideo(16778240)

_10:39:23:048_ detachVideo(16778240)

_10:39:24:061_ attachVideo(16778240)

_10:39:25:997_ detachVideo(16778240)

* * *

UserID: **16778240**

_2025-09-08 10:37:35_ Join session

_10:37:40.355_ attachVideo(16781312) error ❌

_10:37:40:127_ StartVideo

_10:37:40:302_ attachVideo(16778240)

_10:37:41.267_ attachVideo(16781312) error ❌

Thanks  
Vic

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [September 10, 2026, 6:45am UTC](https://devforum.zoom.us/t/video-not-being-rendered/137214/3 "2026-09-10T06:45:20Z")

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Closed on September 10, 2026, 6:45am UTC

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