# Raw video resolution

**URL:** <https://devforum.zoom.us/t/raw-video-resolution/38511>\
**Category:** Video SDK\
**Created:** [December 16, 2020, 6:20am UTC](https://devforum.zoom.us/t/raw-video-resolution/38511 "2020-12-16T06:20:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![brians](https://avatars.discourse-cdn.com/v4/letter/b/c6cbf5/32.png) [@brians](https://devforum.zoom.us/u/brians)\
**Post date:** [December 16, 2020, 6:20am UTC](https://devforum.zoom.us/t/raw-video-resolution/38511/1 "2020-12-16T06:20:06Z")

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Are there restrictions on the resolution of the raw video when sending via ZoomInstantSDKVideoSender? Seems like small-ish sizes fail silently (256x256, 512x512) but larger (640x480, 1K) seem to work fine.

Thanks.

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**Author:** ![jon.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/jon.zoom/32/13495_2.png) [@jon.zoom](https://devforum.zoom.us/u/jon.zoom)\
**Post date:** [December 17, 2020, 8:46pm UTC](https://devforum.zoom.us/t/raw-video-resolution/38511/2 "2020-12-17T20:46:05Z")

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Hi @brians, thanks for the post.

Can you please provide the platform you are integrating the Fully Customizable SDK on so that we can better assist you?

Thanks!

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**Author:** ![brians](https://avatars.discourse-cdn.com/v4/letter/b/c6cbf5/32.png) [@brians](https://devforum.zoom.us/u/brians)\
**Post date:** [December 18, 2020, 8:16am UTC](https://devforum.zoom.us/t/raw-video-resolution/38511/3 "2020-12-18T08:16:41Z")

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This is Swift on iOS.

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**Author:** ![Michael\_Condon](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael_condon/32/13543_2.png) [@Michael\_Condon](https://devforum.zoom.us/u/Michael_Condon)\
**Post date:** [December 22, 2020, 12:35am UTC](https://devforum.zoom.us/t/raw-video-resolution/38511/4 "2020-12-22T00:35:02Z")

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Hey @brians,

Yes there are resolution restrictions depending on the network and device. To determine what resolution is supported/suggested you can implement the delegate method

- (void)onPropertyChange:(NSArray \*\_Nonnull)supportCapabilityArray suggestCapability:(ZoomInstantSDKVideoCapability \*\_Nonnull)suggestCapability;

This will be triggered when there is a change detected and provides the current supported capabilities in supportCapabilityArray and the suggested video capability in suggestCapability.

Thanks!  
Michael