# HW transcoding stopped working

**URL:** <https://forums.plex.tv/t/hw-transcoding-stopped-working/879595>\
**Category:** Plex Media Server\
**Tags:** server-docker\
**Created:** [June 8, 2024, 3:14am UTC](https://forums.plex.tv/t/hw-transcoding-stopped-working/879595 "2024-06-08T03:14:56Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![augsburgere](https://avatars.discourse-cdn.com/v4/letter/a/ce73a5/32.png) [@augsburgere](https://forums.plex.tv/u/augsburgere)\
**Post date:** [June 8, 2024, 3:14am UTC](https://forums.plex.tv/t/hw-transcoding-stopped-working/879595/1 "2024-06-08T03:14:56Z")

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Server Version#:1.40.2.8395  
recently HW transcoding stopped working on my server setup in a docker on unraid, I noticed it as I was watching a movie on a kindle tablet and doing some other work on my home server. the sever cpu was running at 80 to 90 percent so i checked the plex dashboard and sure enough plex was using the cpu to transcode this movie. After some reading if found this in the log, see below, I am unsure of how to get this to work again I have tried going back a version and that just gave me a database error.

Jun 07, 2024 19:51:46.103 [23153896524600] Debug — [Req#777b/Transcode] Codecs: hardware transcoding: opening hw device failed - probably not supported by this system, error: I/O error  
Jun 07, 2024 19:51:46.103 [23153896524600] Debug — [Req#777b/Transcode] Could not create hardware context for hevc  
Jun 07, 2024 19:51:46.111 [23153896524600] Debug — [Req#777b/Transcode] Codecs: testing hevc (decoder) with hwdevice vaapi  
Jun 07, 2024 19:51:46.112 [23153896524600] Debug — [Req#777b/Transcode] Codecs: hardware transcoding: testing API vaapi for device ‘/dev/dri/renderD128’ (Alder Lake-S GT1 [UHD Graphics 730])  
Jun 07, 2024 19:51:46.113 [23153896524600] Error — [Req#777b/Transcode] [FFMPEG] - Failed to initialise VAAPI connection: -1 (unknown libva error).

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<div class="post-metadata">

**Author:** ![augsburgere](https://avatars.discourse-cdn.com/v4/letter/a/ce73a5/32.png) [@augsburgere](https://forums.plex.tv/u/augsburgere)\
**Post date:** [June 10, 2024, 6:40pm UTC](https://forums.plex.tv/t/hw-transcoding-stopped-working/879595/2 "2024-06-10T18:40:02Z")

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I did not find what cause the issue to arise but I renamed the app data folder and removed the docker container, Next i started a fresh install and all is right in my world again. Not sure but something in app datta cause the connection to no complete.

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**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\
**Post date:** [September 8, 2024, 6:40pm UTC](https://forums.plex.tv/t/hw-transcoding-stopped-working/879595/3 "2024-09-08T18:40:48Z")

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