# Wrong transcode device being used, resulting in error **URL:** \ **Category:** Plex Media Server\ **Tags:** server-linux, server-truenas\ **Created:** [November 25, 2025, 4:07am UTC](https://forums.plex.tv/t/wrong-transcode-device-being-used-resulting-in-error/933866 "2025-11-25T04:07:47Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![directhex](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/directhex/32/310201_2.png) [@directhex](https://forums.plex.tv/u/directhex)\ **Post date:** [November 25, 2025, 4:07am UTC](https://forums.plex.tv/t/wrong-transcode-device-being-used-resulting-in-error/933866/1 "2025-11-25T04:07:47Z")
Server Version#: 1.42.1.10069-cbf7ce637 (Forum preview build on TrueNAS) Player Version#: Android TV 10.30.6.4151 My server has two GPUs in it: an AMD iGPU, and an Intel Arc B580. I’ve had transcoding working for a while in Plex, and I know Battlemage support isn’t working yet, so I want to continue using the AMD iGPU. This is selected in the UI: ```auto [Req#d02/Transcode/9840b171682a485e-com-plexapp-android] Preparing driver rsv for GPU AMD Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] [Req#d02/Transcode/9840b171682a485e-com-plexapp-android/DriverDL/rsv] Skipping download; already exists ``` This is reflected in the FFmpeg invocation: ```auto [Req#d02/Transcode/9840b171682a485e-com-plexapp-android/JobRunner] Job running: FFMPEG_EXTERNAL_LIBS='/config/Library/Application\ Support/Plex\ Media\ Server/Codecs/5a45f5a-34a364f06232ef31ec8ebad0-linux-x86_64/' LIBVA_DRIVERS_PATH="/config/Library/Application Support/Plex Media Server/Cache/va-dri-linux-x86_64" X_PLEX_TOKEN=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx "/usr/lib/plexmediaserver/Plex Transcoder" -codec:0 h264 -analyzeduration 20000000 -probesize 20000000 -i "/mnt/video/XXXXX.mkv" -start_at_zero -copyts -fps_mode cfr -init_hw_device vaapi=vaapi:/dev/dri/renderD129 -filter_hw_device vaapi -y -nostats -loglevel quiet -loglevel_plex error -progressurl http://127.0.0.1:32400/video/:/transcode/session/9840b171682a485e-com-plexapp-android/21e3e941-9932-4c73-b54c-2f73316837a6/progress -filter_complex "[0:0]scale=w=1920:h=1080:force_divisible_by=4[0];[0]format=pix_fmts=nv12[1];[1]hwupload[2]" -map "[2]" -metadata:s:0 language=eng -codec:0 h264_vaapi -b:0 20000k -maxrate:0 20000k -bufsize:0 40000k -bsf:0 extract_extradata -r:0 23.975999999999999 -sei:0 -a53_cc -force_key_frames:0 "expr:gte(t,n_forced*1)" -map 0:1 -metadata:s:1 language=eng -codec:1 copy -copypriorss:1 0 -segment_format matroska -f ssegment -individual_header_trailer 0 -flags +global_header -segment_header_filename header -segment_time 1 -segment_start_number 0 -segment_time_delta 0.0625 -segment_list "http://127.0.0.1:32400/video/:/transcode/session/9840b171682a485e-com-plexapp-android/21e3e941-9932-4c73-b54c-2f73316837a6/manifest?X-Plex-Http-Pipeline=infinite" -segment_list_type csv -segment_list_size 5 -segment_list_separate_stream_times 1 -segment_list_unfinished 1 -segment_format_options output_ts_offset=10 -max_delay 5000000 -avoid_negative_ts disabled -map_metadata:g -1 -map_metadata:c -1 -map_chapters -1 "media-%05d.ts" ``` The device, vaapi:/dev/dri/renderD129, is the correct card: ```auto root@pandorica[~]# lspci | grep 30:00.0 30:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cezanne [Radeon Vega Series / Radeon Vega Mobile Series] (rev dc) root@pandorica[~]# ls -l /dev/dri/by-path | grep 129 lrwxrwxrwx 1 root root 13 Nov 23 20:06 pci-0000:30:00.0-render -> ../renderD129 ``` However, playback fails with Intel-specific complaints from VAAPI, mirroring Battlemage errors: ```auto [Req#df6/Transcode/9840b171682a485e-com-plexapp-android/21e3e941-9932-4c73-b54c-2f73316837a6] [AVHWDeviceContext @ 0x7f38fcd6ce40] libva: /config/Library/Application Support/Plex Media Server/Cache/va-dri-linux-x86_64/iHD_drv_video.so init failed [Req#e11/Transcode/9840b171682a485e-com-plexapp-android/21e3e941-9932-4c73-b54c-2f73316837a6] [AVHWDeviceContext @ 0x7f38fcd6ce40] Failed to initialise VAAPI connection: 18 (invalid parameter). [Req#e15/Transcode/9840b171682a485e-com-plexapp-android/21e3e941-9932-4c73-b54c-2f73316837a6] Device creation failed: -5. [Req#e18/Transcode/9840b171682a485e-com-plexapp-android/21e3e941-9932-4c73-b54c-2f73316837a6] Failed to set value 'vaapi=vaapi:' for option 'init_hw_device': I/O error [Req#e1b/Transcode/9840b171682a485e-com-plexapp-android/21e3e941-9932-4c73-b54c-2f73316837a6] Error parsing global options: I/O error ``` This seems like a bug - why is it even touching the Arc card (renderD128) enough to fail on initializing it? ---
**Author:** ![FordGuy61](https://avatars.discourse-cdn.com/v4/letter/f/22d042/32.png) [@FordGuy61](https://forums.plex.tv/u/FordGuy61)\ **Post date:** [November 25, 2025, 4:14am UTC](https://forums.plex.tv/t/wrong-transcode-device-being-used-resulting-in-error/933866/2 "2025-11-25T04:14:14Z")
> [@directhex](#): > > Battlemage support isn’t working yet If you care to experiment: [Battlemage Support - #120 by chris\_decker08](https://forums.plex.tv/t/battlemage-support/910409/120) ---
**Author:** ![directhex](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/directhex/32/310201_2.png) [@directhex](https://forums.plex.tv/u/directhex)\ **Post date:** [November 25, 2025, 5:15am UTC](https://forums.plex.tv/t/wrong-transcode-device-being-used-resulting-in-error/933866/3 "2025-11-25T05:15:23Z")
Let’s call that a partial success - on the one hand, transcoding is working again, on the other hand, it’s still ignoring my configuration and using the Battlemage card instead of the selected Cezanne iGPU ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [November 25, 2025, 5:37am UTC](https://forums.plex.tv/t/wrong-transcode-device-being-used-resulting-in-error/933866/4 "2025-11-25T05:37:15Z")
The new transcoder supports newer Intel CPUs & GPUs (BattleMage). Support for AMD has not been completed yet. The first step was to upgrade the main transcode and all Intel-centric GPUs Chris will be adding AMD GPU support. ---
**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\ **Post date:** [February 23, 2026, 5:37am UTC](https://forums.plex.tv/t/wrong-transcode-device-being-used-resulting-in-error/933866/5 "2026-02-23T05:37:18Z")
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