# DeepAR can't detect face in 854x480, but detects in 856x480

**URL:** <https://forum.deepar.ai/t/deepar-cant-detect-face-in-854x480-but-detects-in-856x480/402>\
**Category:** Bugs\
**Tags:** web-sdk, face-tracking\
**Created:** [August 24, 2023, 7:59am UTC](https://forum.deepar.ai/t/deepar-cant-detect-face-in-854x480-but-detects-in-856x480/402 "2023-08-24T07:59:11Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Daniil\_Gavrilikhin](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.deepar.ai/daniil_gavrilikhin/32/587_2.png) [@Daniil\_Gavrilikhin](https://forum.deepar.ai/u/Daniil_Gavrilikhin)\
**Post date:** [August 24, 2023, 7:59am UTC](https://forum.deepar.ai/t/deepar-cant-detect-face-in-854x480-but-detects-in-856x480/402/1 "2023-08-24T07:59:11Z")

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DeepAR web sdk detects faces well in 144p and 720p, but can’t detect in 480p for some reason.

It doesn’t detect it when resolution is 854x480, but detects in 856x480

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**Author:** ![jelena](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.deepar.ai/jelena/32/14_2.png) [@jelena](https://forum.deepar.ai/u/jelena)\
**Post date:** [August 28, 2023, 11:32am UTC](https://forum.deepar.ai/t/deepar-cant-detect-face-in-854x480-but-detects-in-856x480/402/3 "2023-08-28T11:32:46Z")

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Hi, can you give us more info about how you are using DeepAR on those resolutions?

Still images are harder for us to detect faces on then video feed, this typically is not connected to the image resolution

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**Author:** ![Daniil\_Gavrilikhin](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.deepar.ai/daniil_gavrilikhin/32/587_2.png) [@Daniil\_Gavrilikhin](https://forum.deepar.ai/u/Daniil_Gavrilikhin)\
**Post date:** [August 28, 2023, 3:37pm UTC](https://forum.deepar.ai/t/deepar-cant-detect-face-in-854x480-but-detects-in-856x480/402/4 "2023-08-28T15:37:50Z")

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It’s about video stream quality.  
We use `<video>` element and ask WebRTC for stream with specific resolutions (`144`, `480`,`1080` height).  
We’ve noticed that when video stream is in `480p`, DeepAR stops working.  
It turns out that WebRTC provides `854x480` resolution by default, when you request aspect ration of `1.78`.  
Changing resolution to `856x480` has fixed the problem

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**Author:** ![jelena](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.deepar.ai/jelena/32/14_2.png) [@jelena](https://forum.deepar.ai/u/jelena)\
**Post date:** [August 28, 2023, 3:40pm UTC](https://forum.deepar.ai/t/deepar-cant-detect-face-in-854x480-but-detects-in-856x480/402/5 "2023-08-28T15:40:38Z")

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Thank you for letting us know

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<div class="post-metadata">

**Author:** ![Daniil\_Gavrilikhin](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.deepar.ai/daniil_gavrilikhin/32/587_2.png) [@Daniil\_Gavrilikhin](https://forum.deepar.ai/u/Daniil_Gavrilikhin)\
**Post date:** [August 28, 2023, 3:43pm UTC](https://forum.deepar.ai/t/deepar-cant-detect-face-in-854x480-but-detects-in-856x480/402/6 "2023-08-28T15:43:13Z")

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I don’t feel like this is a “solution”, more like “work-around”. There is clearly something wrong with face detection, if changing resolution by 2 pixels breaks it