[FFmpeg-user] Failed setup for format vulkan: hwaccel initialisation returned error for Arc A750

[Dennis Mungai]

On Tue, 13 Aug 2024 at 19:49, Andrew Randrianasulu <randrianasulu at gmail.com>
wrote:

> вт, 13 авг. 2024 г., 19:46 Terje J. Hanssen <terjejhanssen at gmail.com>:
>
> > Hi,
> >
> > I try to test Vulkan h264 or h265 decoding according to test command at
> > https://trac.ffmpeg.org/wiki/HWAccelIntro#Vulkan
> > ffmpeg -init_hw_device "vulkan=vk:0" -hwaccel vulkan
> > -hwaccel_output_format vulkan -i INPUT -f null - -benchmark
> >
> > but get the following output error:
> > [h264 @ 0x55952760cf40] Failed setup for format vulkan: hwaccel
> > initialisation returned error.
> > or
> > [hevc @ 0x5580e96e8c80] Failed setup for format vulkan: hwaccel
> > initialisation returned error.
> >
> > Any suggestion how to solve it?
> >
>
>
> Honestly, no idea .. try ffmpeg matrix/irc channel or ffmpeg-user?
>
> >
> > ------------------------------
> >
> > vulkaninfo | grep GPU
> >          GPU id = 0 (Intel(R) Arc(tm) A750 Graphics (DG2))
> >          GPU id = 1 (llvmpipe (LLVM 18.1.8, 256 bits))
> >          GPU id = 0 (Intel(R) Arc(tm) A750 Graphics (DG2))
> >          GPU id = 1 (llvmpipe (LLVM 18.1.8, 256 bits))
> >          GPU id = 0 (Intel(R) Arc(tm) A750 Graphics (DG2))
> >          GPU id = 1 (llvmpipe (LLVM 18.1.8, 256 bits))
> > GPU id : 0 (Intel(R) Arc(tm) A750 Graphics (DG2)):
> > GPU id : 1 (llvmpipe (LLVM 18.1.8, 256 bits)):
> > GPU0:
> >      deviceType        = PHYSICAL_DEVICE_TYPE_DISCRETE_GPU
> > GPU1:
> >
> >
> > export ANV_VIDEO_DECODE=1
> >
> > vulkaninfo | grep VK_KHR_video
> >      VK_KHR_video_decode_h264                      : extension revision 9
> >      VK_KHR_video_decode_h265                      : extension revision 8
> >      VK_KHR_video_decode_queue                     : extension revision 8
> >      VK_KHR_video_queue                            : extension revision 8
> >
> >
> > MESA_VK_DEVICE_SELECT=list vulkaninfo
> > selectable devices:
> >    GPU 0: 8086:56a1 "Intel(R) Arc(tm) A750 Graphics (DG2)" discrete GPU
> > 0000:03:00.0
> >    GPU 1: 10005:0 "llvmpipe (LLVM 18.1.8, 256 bits)" CPU 0000:00:00.0
> >
> > This is on openSUSE Tumbleweed-Slowroll with ffmpeg-7.0, Intel, Vulkan,
> > Mesa drivers etc.
> >
> > Full ffmpeg sample output as follows:
> >
> > ffmpeg -hide_banner -init_hw_device "vulkan=vk:0" -hwaccel vulkan
> > -hwaccel_output_format vulkan -i h264_10bit_yuv422p10le.mp4 -f null -
> > -benchmark
> > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'h264_10bit_yuv422p10le.mp4':
> >    Metadata:
> >      major_brand     : isom
> >      minor_version   : 512
> >      compatible_brands: isomiso2avc1mp41
> >      encoder         : Lavf61.1.100
> >    Duration: 00:01:11.20, start: 0.000000, bitrate: 9366 kb/s
> >    Stream #0:0[0x1](und): Video: h264 (High 4:2:2) (avc1 / 0x31637661),
> > yuv422p10le(pc, smpte170m/unknown/unknown, top first), 1920x1080 [SAR
> > 1:1 DAR 16:9], 9364 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
> >        Metadata:
> >          handler_name    : VideoHandler
> >          vendor_id       : [0][0][0][0]
> > Stream mapping:
> >    Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native))
> > Press [q] to stop, [?] for help
> > [h264 @ 0x55952760cf40] Failed setup for format vulkan: hwaccel
> > initialisation returned error.
> > Output #0, null, to 'pipe:':
> >    Metadata:
> >      major_brand     : isom
> >      minor_version   : 512
> >      compatible_brands: isomiso2avc1mp41
> >      encoder         : Lavf61.1.100
> >    Stream #0:0(und): Video: wrapped_avframe, yuv422p10le(pc,
> > smpte170m/unknown/unknown, top coded first (swapped)), 1920x1080 [SAR
> > 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 25 tbn (default)
> >        Metadata:
> >          handler_name    : VideoHandler
> >          vendor_id       : [0][0][0][0]
> >          encoder         : Lavc61.3.100 wrapped_avframe
> > [out#0/null @ 0x5595275c8f40] video:765KiB audio:0KiB subtitle:0KiB
> > other streams:0KiB global headers:0KiB muxing overhead: unknown
> > frame= 1780 fps=767 q=-0.0 Lsize=N/A time=00:01:11.20 bitrate=N/A
> > speed=30.7x
> > bench: utime=20.985s stime=0.185s rtime=2.319s
> > bench: maxrss=391544KiB
>


This has to do with your input file. Your log indicates that you're
attempting to decode 10-bit H.264, and from my suspicion, almost zero GPUs
implement 10-bit H.264 decode.
You can verify via vainfo's output to see the decoder limitation(s) for
H.264 levels, etc.
Try decoding any of the sample file from Kodi's H.264 sample collection:
https://kodi.wiki/view/Samples#Codecs,_Framerates,_Black-levels_and_Subtitles
And report back.