# Cannot subscribe to multiple 720p Video Tracks

**URL:** <https://devforum.zoom.us/t/cannot-subscribe-to-multiple-720p-video-tracks/107738>\
**Category:** Video SDK\
**Tags:** video-sdk\
**Created:** [April 11, 2024, 7:53pm UTC](https://devforum.zoom.us/t/cannot-subscribe-to-multiple-720p-video-tracks/107738 "2024-04-11T19:53:41Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![rg11389](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/rg11389/32/58588_2.png) [@rg11389](https://devforum.zoom.us/u/rg11389)\
**Post date:** [April 11, 2024, 7:53pm UTC](https://devforum.zoom.us/t/cannot-subscribe-to-multiple-720p-video-tracks/107738/1 "2024-04-11T19:53:41Z")

</div>

**Video SDK Type and Version**  
ZoomVideoSDK iOS 1.10.11

**Description**  
Unable to subscribe to multiple tracks at 720p. Migrating our large project from Twilio, this is a major blocker. Every WebRTC product supports multiple feeds at 720 and we require that. This appears to be an undocumented limitation and should be explicitly called out in the Feature Map.

**Error?**  
No errors shown

**Troubleshooting Routes**  
Changed all instances of in the ZoomVideoSample MetalViewController to  
[user.getVideoPipe subscribeWithDelegate:thumbRenderer resolution:ZoomVideoSDKVideoResolution\_720];

This call reports success

**How To Reproduce**  
_1. Download ZoomVideoSample iOS, provide token, adjust codesigning_  
_2. Change every instance of subscribeWithDelegate to have a 720 resolution_  
_3. iOS 17.4.1, but I imagine this is simply an undocumented limitation of the SDK_