# Transcoder stops unexpectedly
**URL:** https://community.wowza.com/t/transcoder-stops-unexpectedly/43246
**Category:** Wowza Streaming Engine
**Created:** [June 20, 2014, 2:24pm UTC](https://community.wowza.com/t/transcoder-stops-unexpectedly/43246 "2014-06-20T14:24:18Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Juan\_Soberanis](https://community.wowza.com/u/Juan_Soberanis)
#### Post date: [June 20, 2014, 2:24pm UTC](https://community.wowza.com/t/transcoder-stops-unexpectedly/43246/1 "2014-06-20T14:24:18Z")
I’m running Wowza on an EC2 instance. After 32 minutes of live streaming, the transcoder stopped unexpectedly. I’ve seen an issue on this forum that the driver for the graphics card could cause this. However, I would think EC2 isn’t graphics accelerated. Does anyone have any insight into this?
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2014-06-18 01:14:57 UTC comment server INFO 200 - LiveStreamPacketizerCupertino.endChunkTS[livecf/_definst_/felder-forum\_240p]: Add chunk: id:11 mode:TS[H264,AAC] a/v/k:52/165/11 duration:9764 - - - 2008684.38 - - - - - - - - - - - - - - - - - - - - - - - - -2014-06-18 01:46:46 UTC comment server INFO 200 - TranscodingSession.close[livecf/_definst_/felder-forum] - - - 2010593.418 - - - -
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- -2014-06-18 01:46:46 UTC unpublish stream INFO 200 felder-forum - _defaultVHost_ livecf _definst_ 2019.43 [any] 1935 rtmp://ec2-54-188-95-252.us-west-2.c
[ompute.amazonaws.com/livecf](http://ompute.amazonaws.com/livecf) 104.35.118.46 rtmp [http://www.pherver.com/static/backstage/swf/pherver\_stage.swf](http://www.pherver.com/static/backstage/swf/pherver_stage.swf) MAC 14,0,0,125 1601968006 152585146 7505 1 0 152394831 0 felder-forum - - - 0 0.0 rtmp://ec2-54-188-95-252.us-west-2.compute.amazonaws.com/livecf/felder-forum rtmp://ec2-54-188-95-252.us-west-2.compute.amazonaws.com/liv
ecf/felder-forum - rtmp://ec2-54-188-95-252.us-west-2.compute.amazonaws.com/livecf -2014-06-18 01:46:46 UTC comment server INFO 200 - TranscoderStreamNameGroup.removeInternal[_defaultVHost_:livecf/_definst_/felder-forum]: Remove name group: felder-forum\_all - - - 2010593.424 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC destroy stream INFO 200 felder-forum - _defaultVHost_ livecf _definst_ 2019.43 [any] 1935 rtmp://ec2-54-188-95-252.us-west-2.compute.amazonaws.com/livecf 104.35.118.46 rtmp [http://www.pherver.com/static/backstage/swf/pherver\_stage.swf](http://www.pherver.com/static/backstage/swf/pherver_stage.swf) MAC 14,0,0,125 1601968006 152585146 7505 1 0 152394831 0 felder-forum - - - 0 0.0 rtmp://ec2-54-188-95-252.us-west-2.compute.amazonaws.com/livecf/felder-forum rtmp://ec2-54-188-95-252.us-west-2.compute.amazonaws.com/livecf/felder-forum - rtmp://ec2-54-188-95-252.us-west-2.compute.amazonaws.com/livecf -
2014-06-18 01:46:46 UTC comment server INFO 200 - TranscodingSession.shutdown[livecf/_definst_/felder-forum] - - - 2010593.427 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC decoder-video-stop transcoder INFO 200 felder-forum - - - - 2010593.427 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC decoder-audio-stop transcoder INFO 200 felder-forum - - - - 2010593.428 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC encoder-video-stop transcoder INFO 200 felder-forum {name: “480p”} - - - 2010593.428 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC encoder-audio-stop transcoder INFO 200 felder-forum {name: “480p”} - - - 2010593.428 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC encoder-video-stop transcoder INFO 200 felder-forum {name: “240p”} - - - 2010593.428 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC encoder-audio-stop transcoder INFO 200 felder-forum {name: “240p”} - - - 2010593.428 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC encoder-video-stop transcoder INFO 200 felder-forum {name: “360p”} - - - 2010593.428 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC encoder-audio-stop transcoder INFO 200 felder-forum {name: “360p”} - - - 2010593.429 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC encoder-audio-stop transcoder INFO 200 felder-forum {name: “PassthroughAAC”} - - - 2010593.429 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC encoder-video-stop transcoder INFO 200 felder-forum {name: “160p”} - - - 2010593.429 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC encoder-audio-stop transcoder INFO 200 felder-forum {name: “160p”} - - - 2010593.429 - - - - - - - - - - - - - - - - - - - - - - - - -
2014-06-18 01:46:46 UTC unpublish stream INFO 200 felder-forum\_480p - - - - 2019.276 - - - - - - - - - - 62 0 225608545 0 felder-forum\_480p - - - 0 0.0 /felder-forum\_480p /felder-forum\_480p - - -
2014-06-18 01:46:46 UTC destroy stream INFO 200 felder-forum\_480p - - - - 2019.277 - - - - - - - - - - 62 0 225608545 0 felder-forum\_480p - - - 0 0.0 /felder-forum\_480p /felder-forum\_480p - - -
2014-06-18 01:46:46 UTC disconnect session INFO 200 1601968006 - _defaultVHost_ livecf _definst_ 2019.608 [any] 1935 rtmp
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### Author:  [@Jason\_Hilton](https://community.wowza.com/u/Jason_Hilton)
#### Post date: [June 23, 2014, 12:02pm UTC](https://community.wowza.com/t/transcoder-stops-unexpectedly/43246/2 "2014-06-23T12:02:33Z")
Hi,
You can have hardware acceleration using EC2, please see the guide below.
[How to configure NVIDIA NVENC accelerated encoding on Amazon EC2 (G2, NVENC)](https://www.wowza.com/docs/how-to-configure-nvidia-nvenc-accelerated-encoding-on-amazon-ec2-g2-nvenc%28G2-NVENC%29)
How many inbound streams are you transcoding and how many renditions are being created?
Ensure that the server is not overwhelmed and is able to transcode the streams you’re sending.
Check the logs for any “SKIP” messages, this indicates that the server is unable to perform the required transcoding tasks due to the hardware not being powerful enough.
Example:
```auto
comment server INFO 200 - TranscodingSession.updateBehindFilter[live/_definst_:myStream]: Video behind filter state change. New state: SKIP1FRAME
comment server INFO 200 - TranscodingSession.updateBehindFilter[live/_definst_:myStream]: Video behind filter state change. New state: SKIP2FRAME
comment server INFO 200 - TranscodingSession.updateBehindFilter[live/_definst_:myStream]: Video behind filter state change. New state: ALLFRAMESON
```
For an idea on how many transcodes you’re able to get please see the benchmark article below.
[Wowza Transcoder AddOn Performance Benchmark](https://www.wowza.com/docs/wowza-transcoder-performance-benchmark)
If the issue persists and you’re not getting the above skip messages, please open a ticket by emailing support@wowza.com.
Please include a detailed description of the issue, a link to this thread for reference and a zipped copy of the following directories:
[Wowza-Install]/conf/
[Wowza-Install]/logs/
[Wowza-Install]/transcoder/
[Wowza-Install]/manager/logs/
Please do make sure you provide logs which show Wowza server starting.
If you are not sure how to get this information please see the following tutorial.
[https://www.wowza.com/docs/how-to-create-a-compressed-zip-file-in-windows-os-x-and-linux](https://www.wowza.com/docs/how-to-create-a-compressed-zip-file-in-windows-os-x-and-linux)
Regards,
Jason