# Watermark detection **URL:** \ **Category:** Hire a Consultant\ **Created:** [March 2, 2019, 5:37pm UTC](https://community.wowza.com/t/watermark-detection/52930 "2019-03-02T17:37:10Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Gustavo\_Villegas](https://avatars.discourse-cdn.com/v4/letter/g/57b2e6/32.png) [@Gustavo\_Villegas](https://community.wowza.com/u/Gustavo_Villegas)\ **Post date:** [March 2, 2019, 5:37pm UTC](https://community.wowza.com/t/watermark-detection/52930/1 "2019-03-02T17:37:10Z")
Hi there … is there any integration done or tool to be tested to detect a water mark in the incoming stream into Wowza for a passthrough or trancoding process, which can trigger an external event? ---
**Author:** ![Andrew\_Kennedy1](https://avatars.discourse-cdn.com/v4/letter/a/278dde/32.png) [@Andrew\_Kennedy1](https://community.wowza.com/u/Andrew_Kennedy1)\ **Post date:** [March 3, 2019, 1:30pm UTC](https://community.wowza.com/t/watermark-detection/52930/2 "2019-03-03T13:30:40Z")
You would need to use a trancoded rendition - so pass through does not give access to the frame to determine a watermark. Is it the same watermark each time ? or does it change ? Andrew ---
**Author:** ![Gustavo\_Villegas](https://avatars.discourse-cdn.com/v4/letter/g/57b2e6/32.png) [@Gustavo\_Villegas](https://community.wowza.com/u/Gustavo_Villegas)\ **Post date:** [March 3, 2019, 2:50pm UTC](https://community.wowza.com/t/watermark-detection/52930/3 "2019-03-03T14:50:52Z")
There will be a bunch of water marks coming in, and I need to detect with a different event each one ---
**Author:** ![Karel\_Boek](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/karel_boek/32/454_2.png) [@Karel\_Boek](https://community.wowza.com/u/Karel_Boek)\ **Post date:** [March 3, 2019, 6:35pm UTC](https://community.wowza.com/t/watermark-detection/52930/4 "2019-03-03T18:35:41Z")
If you need to check it on pixel level; it’s going to be quite a CPU burden for even a single stream. I did a “pixel by pixel color check and change”-test ~2 weeks ago, with a single 720p and an AWS EC2 c4.4xlarge, and though I didn’t check the CPU uage, the stream had serious issues (frame drops etc)