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Missing profiles for encoding/decoding with hwaccel for ffmpeg inside lxc container #4334

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miguelcarmona opened this issue Aug 22, 2023 · 3 comments
Open

Missing profiles for encoding/decoding with hwaccel for ffmpeg inside lxc container #4334

miguelcarmona opened this issue Aug 22, 2023 · 3 comments

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@miguelcarmona
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miguelcarmona commented Aug 22, 2023 •
edited

Required information

  • Distribution: Ubuntu
  • Distribution version: Focal 20.04
  • The output of
    • lxc-start --version
      4.0.12
    • lxc-checkconfig
LXC version 4.0.12
Kernel configuration not found at /proc/config.gz; searching...
Kernel configuration found at /boot/config-5.4.0-155-generic
--- Namespaces ---
Namespaces: enabled
Utsname namespace: enabled
Ipc namespace: enabled
Pid namespace: enabled
User namespace: enabled
Network namespace: enabled

--- Control groups ---
Cgroups: enabled
Cgroup namespace: enabled

Cgroup v1 mount points: 
/sys/fs/cgroup/systemd
/sys/fs/cgroup/blkio
/sys/fs/cgroup/cpu,cpuacct
/sys/fs/cgroup/net_cls,net_prio
/sys/fs/cgroup/cpuset
/sys/fs/cgroup/freezer
/sys/fs/cgroup/devices
/sys/fs/cgroup/hugetlb
/sys/fs/cgroup/rdma
/sys/fs/cgroup/perf_event
/sys/fs/cgroup/memory
/sys/fs/cgroup/pids

Cgroup v2 mount points: 
/sys/fs/cgroup/unified

Cgroup v1 clone_children flag: enabled
Cgroup device: enabled
Cgroup sched: enabled
Cgroup cpu account: enabled
Cgroup memory controller: enabled
Cgroup cpuset: enabled

--- Misc ---
Veth pair device: enabled, loaded
Macvlan: enabled, not loaded
Vlan: enabled, loaded
Bridges: enabled, loaded
Advanced netfilter: enabled, loaded
CONFIG_IP_NF_TARGET_MASQUERADE: enabled, not loaded
CONFIG_IP6_NF_TARGET_MASQUERADE: enabled, not loaded
CONFIG_NETFILTER_XT_TARGET_CHECKSUM: enabled, not loaded
CONFIG_NETFILTER_XT_MATCH_COMMENT: enabled, not loaded
FUSE (for use with lxcfs): enabled, not loaded

--- Checkpoint/Restore ---
checkpoint restore: enabled
CONFIG_FHANDLE: enabled
CONFIG_EVENTFD: enabled
CONFIG_EPOLL: enabled
CONFIG_UNIX_DIAG: enabled
CONFIG_INET_DIAG: enabled
CONFIG_PACKET_DIAG: enabled
CONFIG_NETLINK_DIAG: enabled
File capabilities: 

Note : Before booting a new kernel, you can check its configuration
usage : CONFIG=/path/to/config /usr/bin/lxc-checkconfig
  • uname -a
Linux maestro 5.4.0-155-generic #172-Ubuntu SMP Fri Jul 7 16:10:02 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
  • cat /proc/self/cgroup
12:pids:/user.slice/user-0.slice/session-17181.scope
11:memory:/user.slice/user-0.slice/session-17181.scope
10:perf_event:/
9:rdma:/
8:hugetlb:/
7:devices:/user.slice
6:freezer:/user/root/0
5:cpuset:/
4:net_cls,net_prio:/
3:cpu,cpuacct:/user.slice
2:blkio:/user.slice
1:name=systemd:/user.slice/user-0.slice/session-17181.scope
0::/user.slice/user-0.slice/session-17181.scope
  • cat /proc/1/mounts
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs rw,nosuid,noexec,relatime,size=15850132k,nr_inodes=3962533,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,nodev,noexec,relatime,size=3179252k,mode=755 0 0
/dev/sda2 / ext4 rw,relatime 0 0
securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
tmpfs /sys/fs/cgroup tmpfs ro,nosuid,nodev,noexec,mode=755 0 0
cgroup2 /sys/fs/cgroup/unified cgroup2 rw,nosuid,nodev,noexec,relatime 0 0
cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,name=systemd 0 0
pstore /sys/fs/pstore pstore rw,nosuid,nodev,noexec,relatime 0 0
none /sys/fs/bpf bpf rw,nosuid,nodev,noexec,relatime,mode=700 0 0
cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0
cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpu,cpuacct 0 0
cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_cls,net_prio 0 0
cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset,clone_children 0 0
cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0
cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0
cgroup /sys/fs/cgroup/hugetlb cgroup rw,nosuid,nodev,noexec,relatime,hugetlb 0 0
cgroup /sys/fs/cgroup/rdma cgroup rw,nosuid,nodev,noexec,relatime,rdma 0 0
cgroup /sys/fs/cgroup/perf_event cgroup rw,nosuid,nodev,noexec,relatime,perf_event 0 0
cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0
cgroup /sys/fs/cgroup/pids cgroup rw,nosuid,nodev,noexec,relatime,pids 0 0
systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=28,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=16967 0 0
hugetlbfs /dev/hugepages hugetlbfs rw,relatime,pagesize=2M 0 0
mqueue /dev/mqueue mqueue rw,nosuid,nodev,noexec,relatime 0 0
debugfs /sys/kernel/debug debugfs rw,nosuid,nodev,noexec,relatime 0 0
tracefs /sys/kernel/tracing tracefs rw,nosuid,nodev,noexec,relatime 0 0
sunrpc /run/rpc_pipefs rpc_pipefs rw,relatime 0 0
configfs /sys/kernel/config configfs rw,nosuid,nodev,noexec,relatime 0 0
fusectl /sys/fs/fuse/connections fusectl rw,nosuid,nodev,noexec,relatime 0 0
lxcfs /var/lib/lxcfs fuse.lxcfs rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other 0 0
tmpfs /run/user/0 tmpfs rw,nosuid,nodev,relatime,size=3179248k,mode=700 0 0
tracefs /sys/kernel/debug/tracing tracefs rw,nosuid,nodev,noexec,relatime 0 0

Issue description

I have less profiles on vainfo inside lxc container.

vainfo output on main machine (ubuntu 20.04):

error: can't connect to X server!
libva info: VA-API version 1.7.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_7
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.7 (libva 2.6.0)
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 20.1.1 ()
vainfo: Supported profile and entrypoints
      VAProfileNone                   : VAEntrypointVideoProc
      VAProfileNone                   : VAEntrypointStats
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Simple            : VAEntrypointEncSlice
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointFEI
      VAProfileH264Main               : VAEntrypointEncSliceLP
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSlice
      VAProfileH264High               : VAEntrypointFEI
      VAProfileH264High               : VAEntrypointEncSliceLP
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointEncPicture
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
      VAProfileH264ConstrainedBaseline: VAEntrypointFEI
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
      VAProfileVP8Version0_3          : VAEntrypointVLD
      VAProfileHEVCMain               : VAEntrypointVLD
      VAProfileHEVCMain               : VAEntrypointEncSlice
      VAProfileHEVCMain               : VAEntrypointFEI

vainfo output on lxc container (ubuntu 20.04)

error: can't connect to X server!
libva info: VA-API version 1.7.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_7
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.7 (libva 2.6.0)
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 20.1.1 ()
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSliceLP
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSliceLP
      VAProfileJPEGBaseline           : VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointEncPicture
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
      VAProfileVP8Version0_3          : VAEntrypointVLD
      VAProfileHEVCMain               : VAEntrypointVLD

I have a Intel® Iris® 540 integrated GPU (i5-6260U Skylake)

I have tried several configurations for lxc container:

  1. Only in container/config
lxc.cgroup.devices.allow = c 226:0 rwm
lxc.cgroup.devices.allow = c 226:128 rwm
lxc.mount.entry = /dev/dri dev/dri none bind,create=dir
  1. With a external script
  • In container/config
lxc.cgroup.devices.allow = c 226:0 rwm
lxc.cgroup.devices.allow = c 226:128 rwm
lxc.hook.autodev = /var/lib/lxc/gpu.autodev
  • In /var/lib/lxc/gpu.autodev
#!/bin/bash
cd ${LXC_ROOTFS_MOUNT}/dev
mkdir dri
mknod -m 0666 dri/renderD128 c 226 128
mknod -m 0666 dri/card0 c 226 0

I always have the same result.

I have check on another container with the jammy version (22.04) of ubuntu with same exact result.

lxc-create -n ffmpeg2 -t ubuntu -B dir -- --release jammy --arch amd64 --user ffmpeg --packages "htop,net-tools,nano,screen,wget,curl,bind9-dnsutils"

On all machines I always use the root user

Steps to reproduce

  1. Install lxc in main machine (ubuntu 20.04)
apt install lxc lxc-templates
  1. Create lxc container
lxc-create -n ffmpeg -t ubuntu -B dir -- --release focal --arch amd64 --
user ffmpeg --packages "htop,net-tools,nano,screen,wget,curl,bind9-dnsutils"
  1. Update lxc container config file as in the previous steps.
  2. Install vainfo inside lxc container

Information to attach

  • Any relevant kernel output (dmesg)
[1058720.119937] br0: port 5(veth2PNGX0) entered disabled state
[1058720.120000] device veth2PNGX0 entered promiscuous mode
[1058720.120109] br0: port 5(veth2PNGX0) entered blocking state
[1058720.120110] br0: port 5(veth2PNGX0) entered forwarding state
[1058720.122096] br0: port 5(veth2PNGX0) entered disabled state
[1058720.123217] eth0: renamed from vethDb1VRX
[1058720.148653] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[1058720.148688] IPv6: ADDRCONF(NETDEV_CHANGE): veth2PNGX0: link becomes ready
[1058720.148735] br0: port 5(veth2PNGX0) entered blocking state
[1058720.148736] br0: port 5(veth2PNGX0) entered forwarding state

  • Container log (The file from running lxc-start -n <c> -l TRACE -o <logfile> )
    lxc-start.log

  • The containers configuration file

# Template used to create this container: /usr/share/lxc/templates/lxc-ubuntu
# Parameters passed to the template: --release focal --arch amd64 --user ffmpeg --packages htop,net-tools,nano,screen,wget,curl,bind9-dnsutils
# For additional config options, please look at lxc.container.conf(5)

# Uncomment the following line to support nesting containers:
#lxc.include = /usr/share/lxc/config/nesting.conf
# (Be aware this has security implications)


# Common configuration
lxc.include = /usr/share/lxc/config/ubuntu.common.conf

# Container specific configuration
lxc.rootfs.path = dir:/var/lib/lxc/ffmpeg/rootfs
lxc.uts.name = ffmpeg
lxc.arch = amd64

# Network configuration
lxc.net.0.type = veth
lxc.net.0.link = br0
lxc.net.0.flags = up
lxc.net.0.hwaddr = 00:16:3e:c3:57:fb

lxc.apparmor.profile=unconfined

lxc.cgroup.devices.allow = c 226:0 rwm
lxc.cgroup.devices.allow = c 226:128 rwm
lxc.mount.entry = /dev/dri dev/dri none bind,create=dir
@miguelcarmona miguelcarmona changed the title Less vainfo profiles inside lxc container Missing profiles for encoding/decoding with hwaccel for ffmpeg inside lxc container Aug 22, 2023
@miguelcarmona
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miguelcarmona commented Aug 22, 2023 •
edited

With ffmpeg, I can decode/encode with all profiles but not inside lxc:
No usable encoding entrypoint found for profile VAProfileHEVCMain (17).

Launching this command:

ffmpeg -vaapi_device /dev/dri/renderD128 -i infile.mkv -vf 'format=nv12,hwupload' 
-map 0:0 -c:v hevc_vaapi -map 0:a -c:a copy -rc_mode CQP -global_quality 20 -profile:v main -v verbose outfile.mkv
  • On main machine:
ffmpeg version 4.2.7-0ubuntu0.1 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disabl
e-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-li
bcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp
3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-
libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx2
65 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-l
ibdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
[AVHWDeviceContext @ 0x558b6f904a00] libva: VA-API version 1.7.0
[AVHWDeviceContext @ 0x558b6f904a00] libva: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
[AVHWDeviceContext @ 0x558b6f904a00] libva: Found init function __vaDriverInit_1_7
[AVHWDeviceContext @ 0x558b6f904a00] libva: va_openDriver() returns 0
[AVHWDeviceContext @ 0x558b6f904a00] Initialised VAAPI connection: version 1.7
[AVHWDeviceContext @ 0x558b6f904a00] VAAPI driver: Intel iHD driver for Intel(R) Gen Graphics - 20.1.1 ().
[AVHWDeviceContext @ 0x558b6f904a00] Driver not found in known nonstandard list, using standard behaviour.
[h264 @ 0x558b6f9594c0] Reinit context to 1920x816, pix_fmt: yuv420p
[matroska,webm @ 0x558b6f91c340] Could not find codec parameters for stream 8 (Subtitle: hdmv_pgs_subtitle (pgssub)): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Guessed Channel Layout for Input Stream #0.2 : 5.1
Input #0, matroska,webm, from 'infile.mkv':
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> hevc (hevc_vaapi))
  Stream #0:1 -> #0:1 (copy)
  Stream #0:2 -> #0:2 (copy)
  Stream #0:3 -> #0:3 (copy)
  Stream #0:4 -> #0:4 (copy)
Press [q] to stop, [?] for help
[h264 @ 0x555ffc8f4440] Reinit context to 1920x816, pix_fmt: yuv420p
[graph 0 input from stream 0:0 @ 0x558b702f6c40] w:1920 h:804 pixfmt:yuv420p tb:1/1000 fr:24000/1001 sar:1/1 sws_param:flags=2
[auto_scaler_0 @ 0x558b702f6180] w:iw h:ih flags:'bicubic' interl:0
[Parsed_format_0 @ 0x558b702f5a00] auto-inserting filter 'auto_scaler_0' between the filter 'graph 0 input from stream 0:0' and the filter 'Parsed_format_0'
[auto_scaler_0 @ 0x558b702f6180] w:1920 h:804 fmt:yuv420p sar:1/1 -> w:1920 h:804 fmt:nv12 sar:1/1 flags:0x4
[hevc_vaapi @ 0x558b6f981880] Input surface format is nv12.
[hevc_vaapi @ 0x558b6f981880] Using VAAPI profile VAProfileHEVCMain (17).
[hevc_vaapi @ 0x558b6f981880] Using VAAPI entrypoint VAEntrypointEncSlice (6).
[hevc_vaapi @ 0x558b6f981880] Using VAAPI render target format YUV420 (0x1).
[hevc_vaapi @ 0x558b6f981880] RC mode: CQP.
[hevc_vaapi @ 0x558b6f981880] RC quality: 20.
[hevc_vaapi @ 0x558b6f981880] RC framerate: 24000/1001 (23.98 fps).
[hevc_vaapi @ 0x558b6f981880] Using intra, P- and B-frames (supported references: 3 / 1).
[hevc_vaapi @ 0x558b6f981880] All wanted packed headers available (wanted 0xd, found 0x1f).
[hevc_vaapi @ 0x558b6f981880] Using level 4.
Output #0, matroska, to 'outfile.mkv':
......

Works ok and recode with hw acceleration at 4x (checked with intel_gpu_top).
Without hwaccel, I have 0,5x

  • On container:
ffmpeg version 4.2.7-0ubuntu0.1 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
[AVHWDeviceContext @ 0x5586d3111a00] libva: VA-API version 1.7.0
[AVHWDeviceContext @ 0x5586d3111a00] libva: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
[AVHWDeviceContext @ 0x5586d3111a00] libva: Found init function __vaDriverInit_1_7
[AVHWDeviceContext @ 0x5586d3111a00] libva: va_openDriver() returns 0
[AVHWDeviceContext @ 0x5586d3111a00] Initialised VAAPI connection: version 1.7
[AVHWDeviceContext @ 0x5586d3111a00] VAAPI driver: Intel iHD driver for Intel(R) Gen Graphics - 20.1.1 ().
[AVHWDeviceContext @ 0x5586d3111a00] Driver not found in known nonstandard list, using standard behaviour.
[h264 @ 0x5586d3163740] Reinit context to 1920x816, pix_fmt: yuv420p
[matroska,webm @ 0x5586d314b040] Could not find codec parameters for stream 8 (Subtitle: hdmv_pgs_subtitle (pgssub)): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Guessed Channel Layout for Input Stream #0.2 : 5.1
Input #0, matroska,webm, from 'infile.mkv':
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> hevc (hevc_vaapi))
  Stream #0:1 -> #0:1 (copy)
  Stream #0:2 -> #0:2 (copy)
  Stream #0:3 -> #0:3 (copy)
  Stream #0:4 -> #0:4 (copy)
Press [q] to stop, [?] for help
[h264 @ 0x5586d324a680] Reinit context to 1920x816, pix_fmt: yuv420p
[graph 0 input from stream 0:0 @ 0x5586d3b02100] w:1920 h:804 pixfmt:yuv420p tb:1/1000 fr:24000/1001 sar:1/1 sws_param:flags=2
[auto_scaler_0 @ 0x5586d3aff240] w:iw h:ih flags:'bicubic' interl:0
[Parsed_format_0 @ 0x5586d3b00ec0] auto-inserting filter 'auto_scaler_0' between the filter 'graph 0 input from stream 0:0' and the filter 'Parsed_format_0'
[auto_scaler_0 @ 0x5586d3aff240] w:1920 h:804 fmt:yuv420p sar:1/1 -> w:1920 h:804 fmt:nv12 sar:1/1 flags:0x4
[hevc_vaapi @ 0x5586d36f4e40] Input surface format is nv12.
[hevc_vaapi @ 0x5586d36f4e40] Using VAAPI profile VAProfileHEVCMain (17).
[hevc_vaapi @ 0x5586d36f4e40] No usable encoding entrypoint found for profile VAProfileHEVCMain (17).
Error initializing output stream 0:0 -- Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height
[AVIOContext @ 0x5586d318aec0] Statistics: 0 seeks, 0 writeouts
[AVIOContext @ 0x5586d3126540] Statistics: 5065722 bytes read, 2 seeks
Conversion failed!

Fail and exit

@mihalicyn
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Hi Miguel,

unfortunately I can't give a specific instructions for your case. But I can give you a hint that allows to find a way :)

First of all you need to understand what your application needs and does, easiest way is to use strace.
You can run it like that strace -f -e open,openat -o strace.log ffmpeg -vaapi_device /dev/dri/renderD128 -i infile.mkv -vf 'format=nv12,hwupload',
this will allow you to see which files/devices ffmpeg opens. It's quite obvious that you need to passthrough /dev/dri/renderD128 somehow. But who knows, may be there is something else.

@hallyn
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hallyn commented Oct 4, 2023

If you find the fix for your issue, please do detail it here for the next person (https://xkcd.com/979/)

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