[Cin] h264 vulkan encoding

[Terje J. Hanssen]

Den 11.08.2024 23:30, skrev Andrea paz:
> I could never get decoding to work with vulkan (h264), problems with
> the "device."

I also get

    [h264 @ 0x560566feda40] Device does not support the
    VK_KHR_video_decode_queue extension!
    [h264 @ 0x560566feda40] Failed setup for format vulkan: hwaccel
    initialisation returned error.

when I test Vulkan decoding with my system ffmpeg-7 according to
https://trac.ffmpeg.org/wiki/HWAccelIntro#Vulkan

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 @ 0x560566feda40] Device does not support the
    VK_KHR_video_decode_queue extension!
    [h264 @ 0x560566feda40] 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 @ 0x560566f981c0] video:765KiB audio:0KiB subtitle:0KiB
    other streams:0KiB global headers:0KiB muxing overhead: unknown
    frame= 1780 fps=771 q=-0.0 Lsize=N/A time=00:01:11.20 bitrate=N/A
    speed=30.9x
    bench: utime=21.156s stime=0.154s rtime=2.307s
    bench: maxrss=327376KiB


Testing with a h265 input file I get

    [hevc @ 0x5570ad2efb80] Device does not support the
    VK_KHR_video_decode_queue extension!
    [hevc @ 0x5570ad2efb80] Failed setup for format vulkan: hwaccel
    initialisation returned error.
    [hevc @ 0x5570ad2efb80] Unsupported film grain parameters. Ignoring
    film grain.
    ........
    frame= 1779 fps=756 q=-0.0 Lsize=N/A time=00:01:11.16 bitrate=N/A
    speed=30.2x
    bench: utime=15.973s stime=0.172s rtime=2.353s
    bench: maxrss=347452KiB

This is ffmpeg-7 v. 7.0-1699.5.0.6.pm.1 from Packman on openSUSE 
Tw-Slowroll, which is a bit behind this Tumbleweed built version
https://opensuse.pkgs.org/tumbleweed/packman-x86_64/ffmpeg-7-7.0-1699.6.pm.3.x86_64.rpm.html

Graphics and drivers;

    lspci | grep VGA
    03:00.0 VGA compatible controller: Intel Corporation DG2 [Arc A750]
    (rev 08)

    inxi -G
    Graphics:
       Device-1: Intel DG2 [Arc A750] driver: i915 v: kernel
       Device-2: Microdia Camera driver: snd-usb-audio,uvcvideo type: USB
       Display: x11 server: X.org v: 1.21.1.12 with: Xwayland v: 24.1.1
    driver:
         X: loaded: modesetting unloaded: fbdev,vesa dri: iris gpu: i915
         resolution: 2560x1440~60Hz
       API: OpenGL v: 4.6 vendor: intel mesa v: 24.1.2 renderer: Mesa
    Intel Arc
         A750 Graphics (DG2)
       API: EGL Message: EGL data requires eglinfo. Check --recommends.





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