Den 13.08.2024 19:40, skrev Dennis Mungai:
On Tue, 13 Aug 2024 at 19:49, Andrew Randrianasulu<randrianas...@gmail.com>
wrote:
вт, 13 авг. 2024 г., 19:46 Terje J. Hanssen<terjejhans...@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?
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.
_______________________________________________
1) Thank you for your suspicion regarding almost zero GPUs implement
10-bit H.264 decode.
This is obviously true in my case, because when I tested a h264 8-bit
yuv420p file, the hwaccel
initialisation error was away. Full ffmpeg output report below using my
own encoded input file.
(Even with a h264 8-bit yuv422p input file ffmpeg did output the hwaccel
initialisation error)
2) However Intel Arc A-series should support HEVC (H.265) 10-bit 4:2:0
and 10-bit 4:2:2 decode and encode formats according to this page:
https://www.intel.com/content/www/us/en/support/articles/000098345/graphics.html
Also testing the corresponding input file in this format get the hwaccel
initialisation error, see the full ffmpeg output below.
What surprised me somewhat is relative little speed variation range
between these expected GPU and CPU tests:
8-bit h264: frame= 1780 fps=913 q=-0.0 Lsize=N/A time=00:01:11.20
bitrate=N/A speed=36.5x
10-bit hevc: frame= 1779 fps=750 q=-0.0 Lsize=N/A time=00:01:11.16
bitrate=N/A speed= 30x
Possibly because a relative powerful CPU(?)
inxi -CGz
CPU:
Info: 12-core (8-mt/4-st) model: 12th Gen Intel Core i7-12700KF
bits: 64
type: MST AMCP cache: L2: 12 MiB
Speed (MHz): avg: 800 min/max: 800/4900:5000:3800 cores: 1: 800
2: 800
3: 800 4: 800 5: 800 6: 800 7: 800 8: 800 9: 800 10: 800 11:
800 12: 800
13: 800 14: 800 15: 800 16: 800 17: 800 18: 800 19: 800 20: 800
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: Vulkan v: 1.3.290 drivers: N/A surfaces: xcb,xlib
API: EGL Message: EGL data requires eglinfo. Check --recommends.
-------------
vainfo | egrep 'H264|422_10'
libva info: VA-API version 1.22.0
libva info: Trying to open /usr/lib64/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_21
libva info: va_openDriver() returns 0
VAProfileH264Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointEncSliceLP
VAProfileH264High : VAEntrypointVLD
VAProfileH264High : VAEntrypointEncSliceLP
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
VAProfileHEVCMain422_10 : VAEntrypointVLD
VAProfileHEVCMain422_10 : VAEntrypointEncSliceLP
----------
vulkaninfo | egrep 'H264|H265|HEVC'
VIDEO_CODEC_OPERATION_DECODE_H264_BIT_KHR
VIDEO_CODEC_OPERATION_DECODE_H265_BIT_KHR
-------------
1) 72M h264_8bit_yuv420p.mp4
ffmpeg -hide_banner -init_hw_device "vulkan=vk:0" -hwaccel vulkan
-hwaccel_output_format vulkan -i h264_8bit_yuv420p.mp4 -f null - -benchmark
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'h264_8bit_yuv420p.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf61.1.100
Duration: 00:01:11.20, start: 0.000000, bitrate: 8464 kb/s
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661),
yuvj420p(pc, smpte170m/unknown/unknown, top first), 1920x1080 [SAR 1:1
DAR 16:9], 8462 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
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, vulkan(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 @ 0x55e45d48af40] video:765KiB audio:0KiB subtitle:0KiB
other streams:0KiB global headers:0KiB muxing overhead: unknown
frame= 1780 fps=913 q=-0.0 Lsize=N/A time=00:01:11.20 bitrate=N/A
speed=36.5x
bench: utime=0.589s stime=0.522s rtime=1.950s
bench: maxrss=217780KiB
--------------
2) 23M h265_yuv422p10le_SR.mp4
ffmpeg -hide_banner -init_hw_device "vulkan=vk:0" -hwaccel vulkan
-hwaccel_output_format vulkan -i h265_yuv422p10le_SR.mp4 -f null -
-benchmark
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'h265_yuv422p10le_SR.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
encoder : Lavf61.1.100
Duration: 00:01:11.16, start: 0.000000, bitrate: 2703 kb/s
Stream #0:0[0x1](und): Video: hevc (Rext) (hev1 / 0x31766568),
yuv422p10le(pc, smpte170m/unknown/unknown, top coded first (swapped)),
1920x1080 [SAR 1:1 DAR 16:9], 2700 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 (hevc (native) -> wrapped_avframe (native))
Press [q] to stop, [?] for help
** [hevc @ 0x55edf209fa40] Failed setup for format vulkan: hwaccel
initialisation returned error.
** [hevc @ 0x55edf209fa40] Unsupported film grain parameters. Ignoring
film grain.
Output #0, null, to 'pipe:':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2mp41
encoder : Lavf61.1.100
Stream #0:0(und): Video: wrapped_avframe, yuv422p10le(pc,
smpte170m/unknown/unknown, progressive), 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 @ 0x55edf207ff40] video:764KiB audio:0KiB subtitle:0KiB
other streams:0KiB global headers:0KiB muxing overhead: unknown
frame= 1779 fps=750 q=-0.0 Lsize=N/A time=00:01:11.16 bitrate=N/A
speed= 30x
bench: utime=15.892s stime=0.188s rtime=2.371s
bench: maxrss=411104KiB
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