# Transcoder not working - TranscodingSession.shutdown

**URL:** <https://community.wowza.com/t/transcoder-not-working-transcodingsession-shutdown/49789>\
**Category:** Wowza Streaming Engine\
**Tags:** transcoder\
**Created:** [September 29, 2017, 3:46pm UTC](https://community.wowza.com/t/transcoder-not-working-transcodingsession-shutdown/49789 "2017-09-29T15:46:52Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Philipp\_Pavelka1](https://avatars.discourse-cdn.com/v4/letter/p/919ad9/32.png) [@Philipp\_Pavelka1](https://community.wowza.com/u/Philipp_Pavelka1)\
**Post date:** [September 29, 2017, 3:46pm UTC](https://community.wowza.com/t/transcoder-not-working-transcodingsession-shutdown/49789/1 "2017-09-29T15:46:52Z")

</div>

Hi,

we are still using Wowza 3.5.0 with CentOS x64 and I wanted to use the transcoder add-on again now after a long time.

Unfortunately, I failed to get it working.

```auto
2017-09-28	19:34:23	CEST	comment	server	INFO	200	-	JNI:VideoEncoderH264VAAPI[global]: QuickSync on Linux: vaGetDisplay failed.	-	-	-	1899772.627	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2017-09-28	19:34:23	CEST	comment	server	INFO	200	-	JNI:TranscoderSession.isCUDAAvailable[_defaultVHost_:live-trans/_definst_/live]: NVidia CUDA hardware acceleration is NOT available on Linux	-	-	-	1899772.627	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2017-09-28	19:34:23	CEST	comment	server	INFO	200	-	JNI:TranscoderSession.isQuickSyncAvailable[_defaultVHost_:live-trans/_definst_/live]: Intel Quick Sync hardware acceleration is NOT available.	-	-	-	1899772.627	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2017-09-28	19:34:23	CEST	comment	server	INFO	200	-	TranscodingSession.shutdown[live-trans/_definst_/live]	-	-	-	1899772.628	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2017-09-28	19:34:23	CEST	comment	server	INFO	200	-	TranscodingSession.shutdown[live-trans/_definst_/live]	-	-	-	1899772.628	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

```

```auto
2017-09-28	19:58:10	CEST	comment	server	WARN	200	-	HTTPStreamerCupertinoIndexPlaylist.indexFile[live-trans/_definst_/ngrp:live_all]: MediaList is empty.	-	-	-	1063.006	

```

These are related lines in the log file. Apparently the transcoder immediately shuts down.

Unfortunately I am clueless.

Anyone got any clues?

Thanks in advance!

Philipp