Intel 265k support with Battlemage test build?

Server Version#: 1.43.1.10495

I am trying to get my Intel 265k working for hardware transcoding inside a Docker container.

I’d previously posted in another thread about hypothesized VAAPI version incompatibilities. However, since that just muddied things, I set up a new instance of Ubuntu 24.04 to rule that out. I still see the same behavior:

  1. Plex’s UI shows the adapter, but logs say no hardware decode accelerator found
  2. Running the Plex transcoder binary shows va_openDriver() return -1.
  3. An “apt install ffmpeg” copy (ffmpeg version 6.1.1-3ubuntu5) works fine with `ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i test_hevc.mp4 -c:v h264_vaapi -f null -`

Arrow Lake support was added in the Intel media driver in version 24.1.1. Battlemage was later, in 24.3.3. So, I’m surprised this isn’t working with that build.

Feb 28, 2026 23:27:41.821 [140105437305656] INFO - Plex Media Server v1.43.1.10495-10cfae054 - Docker Docker Container (LinuxServer.io) x86_64 - build: linux-x86_64 debian - GMT -08:00
Feb 28, 2026 23:27:41.821 [140105437305656] INFO - Linux version: 6.8.0-101-generic, language: en-US
Feb 28, 2026 23:27:41.821 [140105437305656] INFO - Processor: 12-core Intel(R) Core(TM) Ultra 7 265K
...
Feb 28, 2026 23:28:35.948 [140105370069816] DEBUG - [Req#308/Transcode/9af4475c-8902-412b-8393-6800ea7be833] Starting a transcode session 9af4475c-8902-412b-8393-6800ea7be833 at offset -1.0 (state=3)
Feb 28, 2026 23:28:35.958 [140105370069816] DEBUG - [Req#308/Transcode/9af4475c-8902-412b-8393-6800ea7be833] TPU: hardware transcoding: enabled, but no hardware decode accelerator found
Feb 28, 2026 23:28:35.959 [140105370069816] DEBUG - [Req#308/Transcode/9af4475c-8902-412b-8393-6800ea7be833] [Universal] Using local file path instead of URL: /path/to/example.mkv
Feb 28, 2026 23:28:35.959 [140105370069816] DEBUG - [Req#308/Transcode/9af4475c-8902-412b-8393-6800ea7be833] TPU: hardware transcoding: final decoder: , final encoder: 

Manual transcoder run:

root@docker-host-gpu2:/# export FFMPEG_EXTERNAL_LIBS=‘/config/Library/Application\ Support/Plex\ Media\ Server/Codecs/74455c4-9fe5eca0444574ce58668b07-linux-x86_64/’
root@docker-host-gpu2:/# /usr/lib/plexmediaserver/Plex\ Transcoder -loglevel verbose -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi   -i test_hevc.mp4   -c:v h264_vaapi -f null -
ffmpeg version 74455c4-9fe5eca0444574ce58668b07 Copyright (c) 2000-2025 the FFmpeg developers
built with Plex clang version 11.0.1 (https://plex.tv 9b997da8e5b47bdb4a9425b3a3b290be393b4b1f)
configuration: --disable-static --enable-shared --disable-libx264 --disable-hwaccels --disable-protocol=concat --external-decoder=h264 --enable-debug --enable-muxers --enable-libxml2 --fatal-warnings --disable-gmp --disable-avdevice --disable-bzlib --disable-sdl2 --disable-decoders --disable-devices --disable-encoders --disable-ffprobe --disable-ffplay --disable-doc --disable-iconv --disable-lzma --disable-schannel --disable-linux-perf --disable-mediacodec --enable-eae --disable-protocol=‘udp,udplite’ --arch=x86_64 --target-os=linux --strip=true --cc=x86_64-linux-musl-clang --pkg-config=/home/runner/_work/plex-conan/plex-conan/plexconantool/plex-pkg-config --pkg-config-flags=–static --windres=llvm-windres --enable-cuda-llvm --enable-libdrm --disable-beignet --enable-opencl --enable-cross-compile --ar=llvm-ar --nm=llvm-nm --ranlib=llvm-ranlib --extra-ldflags=‘-Wl,-rpath,/home/runner/_work/plex-conan/plex-conan/.conan/data/libpciaccess/0.17-7/cdecker08/bump-drivers/package/7763a87432c78a82fd36373080b064286892cea3/lib -Wl,-rpath,/home/runner/_work/plex-conan/plex-conan/.conan/data/libdrm/2.4.120-6/cdecker08/bump-drivers/package/678777ee2ca8706ca90cf805e0dd88235f6d7f05/lib -Wl,-rpath,/home/runner/_work/plex-conan/plex-conan/.conan/data/intel-gmmlib/22.8.1-0/cdecker08/bump-drivers/package/d7d5d1f35ff92a8c39da6b47605055e839a42a9c/lib -Wl,-rpath,/home/runner/_work/plex-conan/plex-conan/.conan/data/libva/2.22.0-0/cdecker08/bump-drivers/package/f0f4893209b867ce448a96e25ef4d6b158311557/lib -Wl,-rpath,/home/runner/_work/plex-conan/plex-conan/.conan/data/iconv/1.16-37/cdecker08/bump-drivers/package/da4999666f4b1709dd93ae40fffdb2c6f130b23f/lib -Wl,-rpath,/home/runner/_work/plex-conan/plex-conan/.conan/data/openssl/3.1.1-2cf4e90-6/cdecker08/bump-drivers/package/121b5d655884b039b2c06c747f3d73ef7b698b66/lib 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--enable-decoder=pcm_s16be_planar --enable-decoder=pcm_s16le --enable-decoder=pcm_s16le_planar --enable-decoder=pcm_s24be --enable-decoder=pcm_s24le --enable-decoder=pcm_s24le_planar --enable-decoder=pcm_s32be --enable-decoder=pcm_s32le --enable-decoder=pcm_s32le_planar --enable-decoder=pcm_s8 --enable-decoder=pcm_s8_planar --enable-decoder=pcm_u16be --enable-decoder=pcm_u16le --enable-decoder=pcm_u24be --enable-decoder=pcm_u24le --enable-decoder=pcm_u32be --enable-decoder=pcm_u32le --enable-decoder=pcm_u8 --enable-decoder=pcm_alaw --enable-decoder=pcm_mulaw --enable-decoder=ass --enable-decoder=dvbsub --enable-decoder=dvdsub --enable-decoder=ccaption --enable-decoder=pgssub --enable-decoder=jacosub --enable-decoder=microdvd --enable-decoder=movtext --enable-decoder=mpl2 --enable-decoder=pjs --enable-decoder=realtext --enable-decoder=sami --enable-decoder=ssa --enable-decoder=stl --enable-decoder=subrip --enable-decoder=subviewer --enable-decoder=text --enable-decoder=vplayer --enable-decoder=webvtt --enable-decoder=xsub --enable-decoder=eac3_eae --enable-decoder=truehd_eae --enable-decoder=mlp_eae --enable-encoder=flac --enable-encoder=alac --enable-encoder=libvorbis --enable-encoder=libopus --enable-encoder=mjpeg --enable-encoder=png --enable-encoder=rawvideo --enable-encoder=wrapped_avframe --enable-encoder=ass --enable-encoder=dvbsub --enable-encoder=dvdsub --enable-encoder=movtext --enable-encoder=ssa --enable-encoder=subrip --enable-encoder=text --enable-encoder=webvtt --enable-encoder=xsub --enable-encoder=pcm_f32be --enable-encoder=pcm_f32le --enable-encoder=pcm_f64be --enable-encoder=pcm_f64le --enable-encoder=pcm_s8 --enable-encoder=pcm_s8_planar --enable-encoder=pcm_s16be --enable-encoder=pcm_s16be_planar --enable-encoder=pcm_s16le --enable-encoder=pcm_s16le_planar --enable-encoder=pcm_s24be --enable-encoder=pcm_s24le --enable-encoder=pcm_s24le_planar --enable-encoder=pcm_s32be --enable-encoder=pcm_s32le --enable-encoder=pcm_s32le_planar 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-I/home/runner/_work/plex-conan/plex-conan/.conan/data/libdrm/2.4.120-6/cdecker08/bump-drivers/package/678777ee2ca8706ca90cf805e0dd88235f6d7f05/include/libdrm -I/home/runner/_work/plex-conan/plex-conan/.conan/data/libxml2/2.9.11-e1bcffea-19/cdecker08/bump-drivers/package/33406d37abb556848190dcd6097a9849aa894baf/include -I/home/runner/_work/plex-conan/plex-conan/.conan/data/libxml2/2.9.11-e1bcffea-19/cdecker08/bump-drivers/package/33406d37abb556848190dcd6097a9849aa894baf/include/libxml2 -I/home/runner/_work/plex-conan/plex-conan/.conan/data/freetype2/2.12.1-32/cdecker08/bump-drivers/package/82a00e1e4cc2e8878bb79ae9b5e2235fd8280e6a/include -I/home/runner/_work/plex-conan/plex-conan/.conan/data/expat/2.6.4-1/cdecker08/bump-drivers/package/64edc78a49b81c2615dad7b22a9ac90cc029860a/include -I/home/runner/_work/plex-conan/plex-conan/.conan/data/libuuid/1.0.3-33/cdecker08/bump-drivers/package/841d526523d3550ac4d52807df94cbbedce37e2c/include -I/home/runner/_work/plex-conan/plex-conan/.conan/data/libpciaccess/0.17-7/cdecker08/bump-drivers/package/7763a87432c78a82fd36373080b064286892cea3/include -I/home/runner/_work/plex-conan/plex-conan/.conan/data/bzip2/1.0.6-43/cdecker08/bump-drivers/package/618bb3c469051b52e1349cf1a297263df374d15a/include -I/home/runner/_work/plex-conan/plex-conan/.conan/data/libpng/1.6.37-47/cdecker08/bump-drivers/package/33406d37abb556848190dcd6097a9849aa894baf/include -I/home/runner/_work/plex-conan/plex-conan/.conan/data/zlib/1.2.11-37/cdecker08/bump-drivers/package/64edc78a49b81c2615dad7b22a9ac90cc029860a/include -DLIBXML_STATIC -DFRIBIDI_LIB_STATIC -DNDEBUG’
libavutil      58. 29.100 / 58. 29.100
libavcodec     60. 31.102 / 60. 31.102
libavformat    60. 16.100 / 60. 16.100
libavfilter     9. 12.100 /  9. 12.100
libswscale      7.  5.100 /  7.  5.100
libswresample   4. 12.100 /  4. 12.100
Rescanning for external libs: ‘/config/Library/Application\ Support/Plex\ Media\ Server/Codecs/74455c4-9fe5eca0444574ce58668b07-linux-x86_64/’
Loading external lib /config/Library/Application Support/Plex Media Server/Codecs/74455c4-9fe5eca0444574ce58668b07-linux-x86_64/libhevc_decoder.so
Loading external lib /config/Library/Application Support/Plex Media Server/Codecs/74455c4-9fe5eca0444574ce58668b07-linux-x86_64/libdca_decoder.so
Selecting decoder ‘hevc’ because of requested hwaccel method vaapi
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ‘test_hevc.mp4’:
Metadata:
major_brand     : isom
minor_version   : 512
compatible_brands: isomiso2mp41
title           : Big Buck Bunny, Sunflower version
artist          : Blender Foundation 2008, Janus Bager Kristensen 2013
composer        : Sacha Goedegebure
encoder         : Lavf58.10.100
comment         : Creative Commons Attribution 3.0 - http://bbb3d.renderfarming.net
genre           : Animation
Duration: 00:00:10.00, start: 0.000000, bitrate: 4201 kb/s
Stream #0:00x1: Video: hevc (Main), 1 reference frame (hev1 / 0x31766568), yuv420p(tv, progressive, left), 1920x1080 [SAR 1:1 DAR 16:9], 4195 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
Metadata:
handler_name    : VideoHandler
vendor_id       : [0][0][0][0]
[out#0/null @ 0x7cef0482da80] No explicit maps, mapping streams automatically…
[vost#0:0/h264_vaapi @ 0x7cef049ea2c0] Created video stream from input stream 0:0
[AVHWDeviceContext @ 0x7cef048f33c0] libva: VA-API version 1.22.0
[AVHWDeviceContext @ 0x7cef048f33c0] libva: User environment variable requested driver ‘iHD’
[AVHWDeviceContext @ 0x7cef048f33c0] libva: Trying to open /home/runner/_work/plex-conan/plex-conan/.conan/data/libva/2.22.0-0/cdecker08/bump-drivers/build/f0f4893209b867ce448a96e25ef4d6b158311557/install/lib/dri/iHD_drv_video.so
[AVHWDeviceContext @ 0x7cef048f33c0] libva: va_openDriver() returns -1
[AVHWDeviceContext @ 0x7cef048f33c0] Failed to initialise VAAPI connection: -1 (unknown libva error).
Device creation failed: -5.
No device available for decoder: device type vaapi needed for codec hevc.
[vist#0:0/hevc @ 0x7cef06ae9340] Hardware device setup failed for decoder: I/O error
[vost#0:0/h264_vaapi @ 0x7cef049ea2c0] Error initializing a simple filtergraph
Error opening output file -.
Error opening output files: I/O error
[AVIOContext @ 0x7cef06ae9040] Statistics: 187435 bytes read, 0 seeks