# Failed to stream from Ubuntu desktop 14.04.2 lts 64-bit
**URL:** https://community.wowza.com/t/failed-to-stream-from-ubuntu-desktop-14-04-2-lts-64-bit/44798
**Category:** Wowza Streaming Engine
**Created:** [February 24, 2015, 12:24am UTC](https://community.wowza.com/t/failed-to-stream-from-ubuntu-desktop-14-04-2-lts-64-bit/44798 "2015-02-24T00:24:52Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Jens\_Lund](https://community.wowza.com/u/Jens_Lund)
#### Post date: [February 24, 2015, 12:24am UTC](https://community.wowza.com/t/failed-to-stream-from-ubuntu-desktop-14-04-2-lts-64-bit/44798/1 "2015-02-24T00:24:52Z")
I have installed Wowza Streaming Engine on Ubuntu desktop 14.04.2 lts 64-bit and I’m trying to livestream from an Aver SF2111H-BR camera.
When I try to view the stream it’s only a black screen even when it says that it is playing.
I have managed to get this working on my local Mac computer. It seems like some package is missing?
I have also tried to preview the stream in VLC with no success.
Log file:
```auto
#Version: 1.0
#Start-Date: 2015-02-24 00:00:01 CET
#Software: Wowza Streaming Engine 4.1.1 build13180
#Date: 2015-02-24
#Fields: date time tz x-event x-category x-severity x-status x-ctx x-comment x-vhost x-app x-appinst x-duration s-ip s-port s-uri c-ip c-proto c-referrer c-user-agent c-client-id cs-bytes sc-bytes x-stream-id x-spos cs-stream-bytes sc-stream-bytes x-sname x-sname-query x-file-name x-file-ext x-file-size x-file-length x-suri x-suri-stem x-suri-query cs-uri-stem cs-uri-query
2015-02-24 00:00:01 CET comment server INFO 200 - NetConnectionConnection.connect: Failed to connect[address:192.168.1.115:1935 SSL:false] - - - 25244.309 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCaster[ef/_definst_] Stream not healthy [stream startup timeout]: mp4:cam1.stream - - - 25244.345 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - MediaCasterStreamValidator.onValidateMediaCastersStop[ef/_definst_] Reset stream [mediaCaster]: mp4:cam1.stream - - - 25244.347 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - RTPMediaCaster.resetConnection[1554466890:ef/_definst_:cam1.stream]: - - - 25244.348 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - RTPMediaCaster.closeRTPSession[1554466890:ef/_definst_:cam1.stream] - - - 25244.349 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - RTPSessionDescriptionDataProviderBasicRTSPWorker.close closeSession - - - 25244.35 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - RTPSessionDescriptionDataProviderBasicRTSPWorker.onClose - - - 25244.351 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET unpublish stream INFO 200 cam1.stream - _defaultVHost_ ef _definst_ 20.169 - 80 null 127.0.0.1 rtsp - known 1060766034 3978612 0 1190 0 3978612 0 cam1.stream - - - - - null null - null -
2015-02-24 00:00:01 CET comment server INFO 200 - RTPSessionTracker.remove[rtsp://192.168.1.115]: 0:true - - - 25244.352 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - MediaCasterStreamValidator.removeMonitor[ef/_definst_/cam1.stream] _defaultVHost_ ef _definst_ 25244.359 - 80 null 127.0.0.1 rtsp - known 1060766034 3978612 0 - - - - - - - - - - - - - null -
2015-02-24 00:00:01 CET destroy stream INFO 200 cam1.stream - _defaultVHost_ ef _definst_ 20.177 - 80 null 127.0.0.1 rtsp - known 1060766034 3978612 0 1190 0 3978612 0 cam1.stream - - - - - null null - null -
2015-02-24 00:00:01 CET comment server INFO 200 - RTPMediaCaster.Reconnector[1554466890:ef/_definst_:cam1.stream]: start: 1191 - - - 25244.362 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - RTPSessionDescriptionDataProviderBasicRTSPWorker.doConnect: rtsp://192.168.1.115:554 - - - 25244.464 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - RTPSessionTracker.add[rtsp://192.168.1.115]: 1 - - - 25244.47 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - RTPSessionDescriptionDataProviderBasicRTSPWorker.buildSDPData: sessionId:6C04B4E0 sessionTimeout:60000 - - - 25244.487 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET comment server INFO 200 - RTPSessionDescriptionDataProviderBasic.getStreamInfo[ef/_definst_]: RTSP/RTP re-streaming. Success, received SDP data. - - - 25244.718 - - - - - - - - - - - - - - - - - - - - - - - - -
2015-02-24 00:00:01 CET create stream INFO 200 - - _defaultVHost_ ef _definst_ 0.001 - 80 null 127.0.0.1 rtsp - known 784456372 0 0 1191 0 0 0 cam1.stream - - - - - null null - null -
2015-02-24 00:00:01 CET comment server WARN 200 - Failed to find an appropriate depacketizer for this track (vnd.onvif.metadata) _defaultVHost_ ef _definst_ 25244.723 - 80 null 127.0.0.1 rtsp - known 784456372 0 0 - - - - - - - - - - - - - null -
2015-02-24 00:00:01 CET comment server WARN 200 - Failed to find an appropriate depacketizer for this track (H264) _defaultVHost_ ef _definst_ 25244.726 - 80 null 127.0.0.1 rtsp - known 784456372 0 0 - - - - - - - - - - - - - null -
2015-02-24 00:00:01 CET comment server WARN 200 - Failed to find an appropriate depacketizer for this track (PCMU) _defaultVHost_ ef _definst_ 25244.727 - 80 null 127.0.0.1 rtsp - known 784456372 0 0 - - - - - - - - - - - - - null -
```
Please tell me if you want some more information!
---
### Author:  [@Jens\_Lund](https://community.wowza.com/u/Jens_Lund)
#### Post date: [February 24, 2015, 4:19am UTC](https://community.wowza.com/t/failed-to-stream-from-ubuntu-desktop-14-04-2-lts-64-bit/44798/2 "2015-02-24T04:19:45Z")
I got it working on my Ubuntu machine by disabling the audio on the IP-camera.
Has anybody any idea why it did not work with audio enabled?
---
### Author:  [@Daren\_Johnson](https://community.wowza.com/u/Daren_Johnson)
#### Post date: [February 24, 2015, 11:52pm UTC](https://community.wowza.com/t/failed-to-stream-from-ubuntu-desktop-14-04-2-lts-64-bit/44798/3 "2015-02-24T23:52:51Z")
Hi,
It suggest that the audio is incompatible, but that said the audio from the camera (looking at the specs) is G.711 / G.726 audio compression.
Wowza can ingest streams with such audio, but playback is limited to only a few players. RTMP Flash player being one. I don’t believe the audio gets passed though to restream for
RTSP playback. You can disable the audio in the [stream file, from the Manager](https://www.wowza.com/docs/how-to-specify-per-stream-settings-in-stream-files#rtspstreams) by setting rtspStreamAudioTrack to false. Alternatively use the [Transcoder](https://www.wowza.com/docs/how-to-set-up-and-run-wowza-transcoder-for-live-streaming#config_encode) to convert the audio to a more compatible AAC codec.
Daren