# Understanding logs - "Stream Not healthy" **URL:** \ **Category:** Wowza Streaming Engine\ **Tags:** wowza-streaming-server-java-api, encoder, webrtc\ **Created:** [October 3, 2023, 6:37am UTC](https://community.wowza.com/t/understanding-logs-stream-not-healthy/96529 "2023-10-03T06:37:47Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Alok\_Kumar2](https://avatars.discourse-cdn.com/v4/letter/a/3ec8ea/32.png) [@Alok\_Kumar2](https://community.wowza.com/u/Alok_Kumar2)\ **Post date:** [October 3, 2023, 6:37am UTC](https://community.wowza.com/t/understanding-logs-stream-not-healthy/96529/1 "2023-10-03T06:37:48Z")
Hi, We use Wowza streaming engine to connect to IP cameras via VMS such as Genetec, Milestone etc. For some of the RTSP camera urls, we have noticed the following logs in Wowza log files ``` MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream startup timeout]: mp4:190.stream - - - 755009.588 - - - - - - - - - - - - - - - - - - - - - - - - - Line 1687: 2023-09-28 07:05:48 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:108.stream - - - 755010.666 - - - - - - - - - - - - - - - - - - - - - - - - - Line 1820: 2023-09-28 07:05:57 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:6.stream - - - 755019.495 - - - - - - - - - - - - - - - - - - - - - - - - - Line 1933: 2023-09-28 07:06:08 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream startup timeout]: mp4:190.stream - - - 755030.319 - - - - - - - - - - - - - - - - - - - - - - - - - Line 1969: 2023-09-28 07:06:29 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream startup timeout]: mp4:190.stream - - - 755051.075 - - - - - - - - - - - - - - - - - - - - - - - - - Line 2000: 2023-09-28 07:06:35 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:6.stream - - - 755057.167 - - - - - - - - - - - - - - - - - - - - - - - - - Line 2085: 2023-09-28 07:06:48 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:6.stream - - - 755070.581 - - - - - - - - - - - - - - - - - - - - - - - - - Line 2139: 2023-09-28 07:06:49 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream startup timeout]: mp4:190.stream - - - 755071.617 - - - - - - - - - - - - - - - - - - - - - - - - - Line 2172: 2023-09-28 07:06:52 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:108.stream - - - 755074.672 - - - - - - - - - - - - - - - - - - - - - - - - - Line 2277: 2023-09-28 07:07:06 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:108.stream - - - 755087.97 - - - - - - - - - - - - - - - - - - - - - - - - - Line 2358: 2023-09-28 07:07:09 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:6.stream - - - 755091.623 - - - - - - - - - - - - - - - - - - - - - - - - - Line 2596: 2023-09-28 07:08:00 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:6.stream - - - 755142.525 - - - - - - - - - - - - - - - - - - - - - - - - - Line 2680: 2023-09-28 07:08:06 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:108.stream - - - 755148.568 - - - - - - - - - - - - - - - - - - - - - - - - - Line 2849: 2023-09-28 07:08:27 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:108.stream - - - 755169.578 - - - - - - - - - - - - - - - - - - - - - - - - - Line 2941: 2023-09-28 07:08:47 PDT comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[live/_definst_] Stream not healthy [stream timeout]: mp4:108.stream ``` I have noticed that once the above logs are logged, the RTSP session is destroyed. However, some of these cameras when streamed in VLC using the same URL continue to stream. Questions: - What is the meaning of these logs? - Does it mean that Wowza was not able to pull even a single packet or not enough packets to continue streaming the camera? - What would be scenarios where a RTSP streams would work smoothly in VLC but get disconnected in Wowza streaming engine. Please let us know if we need to add some properties etc to troubleshoot the issue. Wowza version: 4.8.20 ---
**Author:** ![Alex\_C](https://avatars.discourse-cdn.com/v4/letter/a/bbe5ce/32.png) [@Alex\_C](https://community.wowza.com/u/Alex_C)\ **Post date:** [October 4, 2023, 12:14pm UTC](https://community.wowza.com/t/understanding-logs-stream-not-healthy/96529/2 "2023-10-04T12:14:39Z")
Hello @Alok_Kumar2 The part of the log you want to look at is the Stream not healthy [**stream timeout**] This means that Wowza Streaming Engine did not receive a response from the camera when it sent a ping to it. After a predetermined time the stream times out. Wowza will attempt to reconnect over and over again if this happens, which should also be logged later on. You can reach out to our support team to get a comprehensive log review to dig deeper into the issue here: [https://www.wowza.com/support/open-ticket](https://www.wowza.com/support/open-ticket) Regards, Alex Chepurnoy ---
**Author:** ![Alok\_Kumar2](https://avatars.discourse-cdn.com/v4/letter/a/3ec8ea/32.png) [@Alok\_Kumar2](https://community.wowza.com/u/Alok_Kumar2)\ **Post date:** [October 4, 2023, 1:22pm UTC](https://community.wowza.com/t/understanding-logs-stream-not-healthy/96529/3 "2023-10-04T13:22:09Z")
Hi @Alex_C What do you mean with the statement "`Wowza streaming engine did not receive a response from the camera when it sent a ping to it"` Camera is continuously sending the stream as the stream works in VLC, if there was an issue with the camera then the stream would have stopped in VLC. Could it be that only the `ping` request is not being honored by the camera due to some netwok related reasons and Wowza is deciding to drop the RTSP session completely after it even though Wowza is still receiving RTSP packets? is there a way to by-pass the ping if above is the case?