# Wowza Streaming Engine

**URL:** https://community.wowza.com/c/wowza-streaming-engine/8.md?page=68

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**Page:** 69

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## [nDVR conversion to MP4 failing](https://community.wowza.com/t/ndvr-conversion-to-mp4-failing/53707)

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**Author:** [@Alex\_Lynch](https://community.wowza.com/u/Alex_Lynch)\
**Replies:** 1\
**Last updated:** [July 25, 2019, 11:24pm UTC](https://community.wowza.com/t/ndvr-conversion-to-mp4-failing/53707 "2019-07-25T23:24:34Z")

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Hi, I am trying to convert a single nDVR store using the REST API both with and without start/end parameters. When I query DVR converter status shortly after submitting the request, the state is SUCCESSFUL, but the resu…

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## [Best practice: Copy Live Application to new one](https://community.wowza.com/t/best-practice-copy-live-application-to-new-one/53703)

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**Author:** [@DFN\_VC](https://community.wowza.com/u/DFN_VC)\
**Replies:** 2\
**Last updated:** [July 25, 2019, 10:13pm UTC](https://community.wowza.com/t/best-practice-copy-live-application-to-new-one/53703 "2019-07-25T22:13:44Z")

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Have created a live application with additional Java modules and several configurations options. Now I want copy this application to a new one with different name and a few modifications. Is there a way to do this with…

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## [Wowza not releasing memory](https://community.wowza.com/t/wowza-not-releasing-memory/53706)

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**Author:** [@Sujit\_Patel](https://community.wowza.com/u/Sujit_Patel)\
**Replies:** 1\
**Last updated:** [July 25, 2019, 10:04pm UTC](https://community.wowza.com/t/wowza-not-releasing-memory/53706 "2019-07-25T22:04:59Z")

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Wowza streaming engine not releasing memory once start it just continue to consume memory as mush as possible even in idle state and after consuming all memory it stops working. i have already tried performance tuning re…

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## [WebRTC random connection loss issue](https://community.wowza.com/t/webrtc-random-connection-loss-issue/53702)

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**Author:** [@Darren\_Ong1](https://community.wowza.com/u/Darren_Ong1)\
**Replies:** 2\
**Last updated:** [July 25, 2019, 9:47pm UTC](https://community.wowza.com/t/webrtc-random-connection-loss-issue/53702 "2019-07-25T21:47:12Z")

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Hi, I have been working on building a live streaming application which will take live feed from Wowza. For my input stream, I am using RTMP to send live camera information to Wowza. On my web application, I am usin…

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## [How to have multiple WebRTC connections in a single web client.](https://community.wowza.com/t/how-to-have-multiple-webrtc-connections-in-a-single-web-client/53611)

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**Author:** [@Darren\_Ong1](https://community.wowza.com/u/Darren_Ong1)\
**Replies:** 2\
**Last updated:** [July 24, 2019, 5:02am UTC](https://community.wowza.com/t/how-to-have-multiple-webrtc-connections-in-a-single-web-client/53611 "2019-07-24T05:02:18Z")

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Hi, I have been trying to build a Web UI that will be able to display multiple camera streams in the same screen. Is there a way to modify the WebRTC code provided in the sample code to allow for that? Based on my under…

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## [Method to get mediafile duration in java API.](https://community.wowza.com/t/method-to-get-mediafile-duration-in-java-api/53691)

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**Author:** [@Smiley\_Fadel](https://community.wowza.com/u/Smiley_Fadel)\
**Replies:** 1\
**Last updated:** [July 22, 2019, 11:53pm UTC](https://community.wowza.com/t/method-to-get-mediafile-duration-in-java-api/53691 "2019-07-22T23:53:40Z")

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I’m trying to get the duration of a VOD stored in contents/ in an HTTProvider project. Is there an API method to do this?

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## [wowza ndvr crashes every day](https://community.wowza.com/t/wowza-ndvr-crashes-every-day/53688)

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**Author:** [@Andrew\_Andrew2](https://community.wowza.com/u/Andrew_Andrew2)\
**Replies:** 1\
**Last updated:** [July 22, 2019, 6:20pm UTC](https://community.wowza.com/t/wowza-ndvr-crashes-every-day/53688 "2019-07-22T18:20:21Z")

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good day. We have a server where we write the ndvr archive using wowza streaming engine. CentOS release 6.7, Intel (R) Xeon (R) CPU E5530 @ 2.40GHz, 5gb ram, 1tb hdd, 1gb / s network. The last week, the wowza(java) proce…

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## [Correct gstreamer command to handle mpeg-ts SRT](https://community.wowza.com/t/correct-gstreamer-command-to-handle-mpeg-ts-srt/53663)

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**Author:** [@Daniel\_Rossi](https://community.wowza.com/u/Daniel_Rossi)\
**Replies:** 3\
**Last updated:** [July 22, 2019, 8:10am UTC](https://community.wowza.com/t/correct-gstreamer-command-to-handle-mpeg-ts-srt/53663 "2019-07-22T08:10:07Z")

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I’m just wondering if there is an example gstreamer receiver server command to handle the SRT mpeg-ts stream. My other comand produced blocky images so was wondering how it handles the mpeg-ts stream. I’ve got this so fa…

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## [Where is the file location of transcoded video fragments from the incoming video stream?](https://community.wowza.com/t/where-is-the-file-location-of-transcoded-video-fragments-from-the-incoming-video-stream/53637)

<div class="topic-metadata">

**Author:** [@Oscar\_WONG](https://community.wowza.com/u/Oscar_WONG)\
**Replies:** 1\
**Last updated:** [July 19, 2019, 11:49pm UTC](https://community.wowza.com/t/where-is-the-file-location-of-transcoded-video-fragments-from-the-incoming-video-stream/53637 "2019-07-19T23:49:35Z")

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Where is the file location of transcoded video fragments from the incoming video stream? I would like to check the size of those video fragments in my Win10 during the live stream. (I need to compare the size of transco…

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## [WebRTC + Safari](https://community.wowza.com/t/webrtc-safari/53683)

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**Author:** [@b4733274\_b4733274](https://community.wowza.com/u/b4733274_b4733274)\
**Replies:** 2\
**Last updated:** [July 19, 2019, 8:25pm UTC](https://community.wowza.com/t/webrtc-safari/53683 "2019-07-19T20:25:05Z")

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Hello guys! Is it possible to publish video/audio to Wowza using Safari for MacOS or iOS?

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## [Azure Wowza Streaming Engine Questions](https://community.wowza.com/t/azure-wowza-streaming-engine-questions/53666)

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**Author:** [@Michael\_Vanderhoudel](https://community.wowza.com/u/Michael_Vanderhoudel)\
**Replies:** 2\
**Last updated:** [July 19, 2019, 3:18pm UTC](https://community.wowza.com/t/azure-wowza-streaming-engine-questions/53666 "2019-07-19T15:18:18Z")

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Hello, We would like to stream 2 webcams 24/24 – 7d/7. For the moment we don’t have the choice to use Azure and the Wowza Streaming Engine available on the marketplace (due to some legal constraints). We already confi…

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## [SRT stream target without knowing the SRT receiver address ?](https://community.wowza.com/t/srt-stream-target-without-knowing-the-srt-receiver-address/53639)

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**Author:** [@Daniel\_Rossi](https://community.wowza.com/u/Daniel_Rossi)\
**Replies:** 13\
**Last updated:** [July 18, 2019, 9:51pm UTC](https://community.wowza.com/t/srt-stream-target-without-knowing-the-srt-receiver-address/53639 "2019-07-18T21:51:57Z")

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I have tested an SRT stream target distribution with gstreamer. Using something like this gst-launch-1.0 srtclientsrc uri=srt://ip:8081 ! decodebin ! autovideosink Is there a way for Wowza to allow for clients to pull …

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## [RTMPS and Wowza](https://community.wowza.com/t/rtmps-and-wowza/53665)

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**Author:** [@Quang\_Nguyen\_Hong1](https://community.wowza.com/u/Quang_Nguyen_Hong1)\
**Replies:** 5\
**Last updated:** [July 18, 2019, 2:45pm UTC](https://community.wowza.com/t/rtmps-and-wowza/53665 "2019-07-18T14:45:55Z")

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Hi, Base on following link, I can success to send RTMP stream to Wowza engine and run well using test player https://www.wowza.com/docs/how-to-set-up-live-streaming-using-an-rtmp-based-encoder But how to send RTMPS st…

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## [Can't restream m3u8 (HLS)](https://community.wowza.com/t/cant-restream-m3u8-hls/53669)

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**Author:** [@Silencer](https://community.wowza.com/u/Silencer)\
**Replies:** 1\
**Last updated:** [July 17, 2019, 9:16pm UTC](https://community.wowza.com/t/cant-restream-m3u8-hls/53669 "2019-07-17T21:16:03Z")

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Hi, I can re-stream unprotected hls stream using from wowza stream file (media caster type : applehls). But I can’t re-stream the following hls stream : (link :http://yangon1.akamaized.net/live/19daddcf-0f46-4a14-988e…

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## [dockerize wowza for multiple wowza instances](https://community.wowza.com/t/dockerize-wowza-for-multiple-wowza-instances/53657)

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**Author:** [@Ryan\_Lee4](https://community.wowza.com/u/Ryan_Lee4)\
**Replies:** 1\
**Last updated:** [July 16, 2019, 10:20pm UTC](https://community.wowza.com/t/dockerize-wowza-for-multiple-wowza-instances/53657 "2019-07-16T22:20:49Z")

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HI I managed to setup docker in my ubuntu server, next can we have 2-3 wowza running on the same server? i tried to run 2 wowza instances using INSTANCE 1 sudo docker run -it --name wowza11 --restart always --expose …

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## [How to create an thumbnail image from video file (mp4)](https://community.wowza.com/t/how-to-create-an-thumbnail-image-from-video-file-mp4/53660)

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**Author:** [@Arian\_Eghtessadi](https://community.wowza.com/u/Arian_Eghtessadi)\
**Replies:** 1\
**Last updated:** [July 16, 2019, 9:09pm UTC](https://community.wowza.com/t/how-to-create-an-thumbnail-image-from-video-file-mp4/53660 "2019-07-16T21:09:48Z")

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For Livestreaming there is the HTTPProviderGenerateThumbnail class. What about VOD? How can I create a thumbnail image there?

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## [VOD HLS Buffering and cupertinoChunkDurationTarget](https://community.wowza.com/t/vod-hls-buffering-and-cupertinochunkdurationtarget/53653)

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**Author:** [@Michael\_Doble](https://community.wowza.com/u/Michael_Doble)\
**Replies:** 4\
**Last updated:** [July 16, 2019, 1:16pm UTC](https://community.wowza.com/t/vod-hls-buffering-and-cupertinochunkdurationtarget/53653 "2019-07-16T13:16:12Z")

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I’ve got a 15 second video that has a keyframe interval of 2. I’ve set my cupertinoChunkDurationTarget setting to 6000. The video takes a hot second to load (using Clappr for playback) and when it does, the video gets to…

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## [I want to prevent the wowza server from starting automatically when the Linux server restarts.](https://community.wowza.com/t/i-want-to-prevent-the-wowza-server-from-starting-automatically-when-the-linux-server-restarts/53632)

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**Author:** [@sunny\_park](https://community.wowza.com/u/sunny_park)\
**Replies:** 3\
**Last updated:** [July 15, 2019, 8:13pm UTC](https://community.wowza.com/t/i-want-to-prevent-the-wowza-server-from-starting-automatically-when-the-linux-server-restarts/53632 "2019-07-15T20:13:42Z")

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I want to prevent the wowza server from starting automatically when the Linux server restarts. When I install the wowza streaming engine server, it asks if wowza should be started automatically when the server is restar…

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## [How can I stream my video (video, audio, metadata) with RTSP?](https://community.wowza.com/t/how-can-i-stream-my-video-video-audio-metadata-with-rtsp/53643)

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**Author:** [@hdd\_sdd](https://community.wowza.com/u/hdd_sdd)\
**Replies:** 1\
**Last updated:** [July 15, 2019, 3:38pm UTC](https://community.wowza.com/t/how-can-i-stream-my-video-video-audio-metadata-with-rtsp/53643 "2019-07-15T15:38:08Z")

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Hi, I’d like to know how can I stream my video (video, audio, metadata) with RTSP? In my video (mpegts), there are video, audio and metadata content. I want to stream all content with RTSP. I want to stream like thi…

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## [Is there any way to switch multiple streams on server side?](https://community.wowza.com/t/is-there-any-way-to-switch-multiple-streams-on-server-side/53645)

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**Author:** [@Luke\_Stanley](https://community.wowza.com/u/Luke_Stanley)\
**Replies:** 1\
**Last updated:** [July 15, 2019, 3:34pm UTC](https://community.wowza.com/t/is-there-any-way-to-switch-multiple-streams-on-server-side/53645 "2019-07-15T15:34:23Z")

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Hello! I’m working on live streaming project and it has to provide multiple(up to 3) streams per a game and they can be switched in main view. Currently I’m loading every streams when the administrator change the strea…

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## [UDP streams lagging after transcoding](https://community.wowza.com/t/udp-streams-lagging-after-transcoding/53648)

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**Author:** [@Aleksandar\_Stojcevsk](https://community.wowza.com/u/Aleksandar_Stojcevsk)\
**Replies:** 1\
**Last updated:** [July 12, 2019, 7:04pm UTC](https://community.wowza.com/t/udp-streams-lagging-after-transcoding/53648 "2019-07-12T19:04:06Z")

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Hi, I have 20 smooth incoming UDP streams. I use transcoder with 3 bitrates (720p, 480p and 240p) My configuration is: -Ubuntu Server 18.04 NVIDIA Quadro K5000 Intel® Core™ i7-8700K CPU @ 3.70GHz RAM 16GB A…

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## [WSE Module Development - When deploying new modules, old modules seem to stay in memory?](https://community.wowza.com/t/wse-module-development-when-deploying-new-modules-old-modules-seem-to-stay-in-memory/53652)

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**Author:** [@Rich\_Sokol](https://community.wowza.com/u/Rich_Sokol)\
**Replies:** 1\
**Last updated:** [July 12, 2019, 7:01pm UTC](https://community.wowza.com/t/wse-module-development-when-deploying-new-modules-old-modules-seem-to-stay-in-memory/53652 "2019-07-12T19:01:12Z")

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We are devloping custom modules for our WSE deployment on CentOS7, it seems as though simply restarting the services via the WSE Manager does not release the old version of the module? Is there a command that can be exec…

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## [QuickSync on Xeon (Windows)](https://community.wowza.com/t/quicksync-on-xeon-windows/53592)

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**Author:** [@David\_Wilkins](https://community.wowza.com/u/David_Wilkins)\
**Replies:** 4\
**Last updated:** [July 11, 2019, 4:50pm UTC](https://community.wowza.com/t/quicksync-on-xeon-windows/53592 "2019-07-11T16:50:11Z")

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Hi, we have Wowza on a Xeon E5-2670, and have been trying the transcoder using QuickSync. I’m encountering a few issues: Periodically the framerate drops for a few seconds, and then recovers. Sometimes this is accompa…

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## [Where is the file location of transcoded video fragments from the incoming video stream?](https://community.wowza.com/t/where-is-the-file-location-of-transcoded-video-fragments-from-the-incoming-video-stream/53609)

<div class="topic-metadata">

**Author:** [@Oscar\_WONG](https://community.wowza.com/u/Oscar_WONG)\
**Replies:** 2\
**Last updated:** [July 10, 2019, 10:41am UTC](https://community.wowza.com/t/where-is-the-file-location-of-transcoded-video-fragments-from-the-incoming-video-stream/53609 "2019-07-10T10:41:21Z")

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Where is the file location of transcoded video fragments from the incoming video stream? I would like to check the size of those video fragments in my Win10 during the live stream. (I need to compare the size of transco…

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## [Streaming Cloud vs Streaming Engine](https://community.wowza.com/t/streaming-cloud-vs-streaming-engine/53629)

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**Author:** [@Manny\_Lewis](https://community.wowza.com/u/Manny_Lewis)\
**Replies:** 2\
**Last updated:** [July 10, 2019, 12:34am UTC](https://community.wowza.com/t/streaming-cloud-vs-streaming-engine/53629 "2019-07-10T00:34:48Z")

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I am documenting a 10K with a drone and will be using a RTMP stream to send the footage to the finish line. Would it make sense to use the Streaming Cloud with the 30 second latency or try bringing a laptop and using th…

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## [Adaptive Bitrate Streaming: What it is and Why it Matters](https://community.wowza.com/t/adaptive-bitrate-streaming-what-it-is-and-why-it-matters/53631)

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**Author:** [@Rose\_Power-Wowza\_Com](https://community.wowza.com/u/Rose_Power-Wowza_Com)\
**Replies:** 0\
**Last updated:** [July 9, 2019, 11:58pm UTC](https://community.wowza.com/t/adaptive-bitrate-streaming-what-it-is-and-why-it-matters/53631 "2019-07-09T23:58:07Z")

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To connect with users — no matter where they are — you need adaptive bitrate streaming. That way, you can deliver high-quality streams to users with outstanding bandwidth and processing power, while also accommodating t…

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## [how to make 2 tracks stay in the same group on DASH?](https://community.wowza.com/t/how-to-make-2-tracks-stay-in-the-same-group-on-dash/53623)

<div class="topic-metadata">

**Author:** [@Oscar\_WONG](https://community.wowza.com/u/Oscar_WONG)\
**Replies:** 3\
**Last updated:** [July 9, 2019, 5:35pm UTC](https://community.wowza.com/t/how-to-make-2-tracks-stay-in-the-same-group-on-dash/53623 "2019-07-09T17:35:43Z")

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manifes.txt \<- mpd file by DASH playback URL May I ask for your help, please? I am using my created Transcoder presets to encode a 720p and a 240p video to stream out to audience mobile. However, those videos formats ar…

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## [Application.xml does not exist](https://community.wowza.com/t/application-xml-does-not-exist/53621)

<div class="topic-metadata">

**Author:** [@Eli\_Richey](https://community.wowza.com/u/Eli_Richey)\
**Replies:** 17\
**Last updated:** [July 9, 2019, 5:21pm UTC](https://community.wowza.com/t/application-xml-does-not-exist/53621 "2019-07-09T17:21:43Z")

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I’ve been working on a streaming app. After starting my Wowza Streaming Engine server, I get the following error in xCode console: An error occurred when trying to connect to host. So I looked in the server logs and fou…

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## [playback security - Include client Ip in hash generation -want to exclude last digit](https://community.wowza.com/t/playback-security-include-client-ip-in-hash-generation-want-to-exclude-last-digit/53628)

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**Author:** [@Silencer](https://community.wowza.com/u/Silencer)\
**Replies:** 0\
**Last updated:** [July 9, 2019, 12:41pm UTC](https://community.wowza.com/t/playback-security-include-client-ip-in-hash-generation-want-to-exclude-last-digit/53628 "2019-07-09T12:41:35Z")

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Hi, I use wowza secure token v2 + include client ip in hash generation. Seem work well but some of our mobile internet user said they have a error and stream didn’t load. I check the log and their last ip digit mismat…

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## [Wowza serving mpeg-dash manifest.mpd behind an apache proxy](https://community.wowza.com/t/wowza-serving-mpeg-dash-manifest-mpd-behind-an-apache-proxy/53619)

<div class="topic-metadata">

**Author:** [@charles\_mackay](https://community.wowza.com/u/charles_mackay)\
**Replies:** 2\
**Last updated:** [July 9, 2019, 7:42am UTC](https://community.wowza.com/t/wowza-serving-mpeg-dash-manifest-mpd-behind-an-apache-proxy/53619 "2019-07-09T07:42:33Z")

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I have a very simple situation that i am struggling to solve. I have one server hosting both apache and wowza streaming engine. Apache is listening to port 443 and serving web content. I have wowza serving secure strea…

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