[Cin] System ffmpeg Vulkan video transcoding fails - while benchmarking works
Terje Hanssen
terjejhanssen at gmail.com
Sat Apr 26 21:34:35 CEST 2025
On 4/26/25 18:09, Andrew Randrianasulu wrote:
> On Sat, Apr 26, 2025 at 8:28 PM Terje Hanssen via Cin
> <cin at lists.cinelerra-gg.org> wrote:
>> I have yet to get my system ffmpeg vulkan video transcoding to work on
>> my machines, while benchmarking works.
>> Therefore I hope get verified if my code line is correct, and how to fix
>> possible syntax errors.
>>
>> -----------------
>>
>> Dell XPS 13-9370 ultrabook
>>
>> ffmpeg version 7.1.1 built with gcc 14 (SUSE Linux)
>>
>> inxi -CGSz
>> System:
>> Kernel: 6.12.24-1.0.2.sr20250402-longterm arch: x86_64 bits: 64
>> Desktop: GNOME v: 48.0 Distro: openSUSE Tumbleweed-Slowroll 20250402
>> CPU:
>> Info: quad core model: Intel Core i7-8550U bits: 64 type: MT MCP cache:
>> L2: 1024 KiB
>> Speed (MHz): avg: 900 min/max: 400/4000 cores: 1: 900 2: 900 3: 900
>> 4: 900
>> 5: 900 6: 900 7: 900 8: 900
>> Graphics:
>> Device-1: Intel UHD Graphics 620 driver: i915 v: kernel
>> Device-2: Realtek Integrated_Webcam_HD driver: uvcvideo type: USB
>> Display: wayland server: X.org v: 1.21.1.15 with: Xwayland v: 24.1.6
>> compositor: gnome-shell driver: gpu: i915 resolution: 3840x2160~60Hz
>> API: OpenGL v: 4.6 vendor: intel mesa v: 25.0.3 renderer: Mesa Intel UHD
>> Graphics 620 (KBL GT2)
>> API: Vulkan v: 1.4.309 drivers: N/A surfaces: xcb,xlib,wayland
>> API: EGL Message: EGL data requires eglinfo. Check --recommends.
>> Info: Tools: api: glxinfo,vulkaninfo x11: xprop,xrandr
>>
>> =========================
>>
>> export VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/intel_icd.x86_64.json
>> export ANV_VIDEO_DECODE=1
>> export ANV_VIDEO_ENCODE=1
>>
>>
>> Transcoding fails:
>>
>> ffmpeg -hide_banner -init_hw_device vulkan=vk:0 -filter_hw_device vk -i
>> hdv09_04_h264_qsv_8b420.mp4 -c:v hevc_vulkan test_hevc.mp4
>> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'hdv09_04_h264_qsv_8b420.mp4':
>> Metadata:
>> major_brand : isom
>> minor_version : 512
>> compatible_brands: isomiso2avc1mp41
>> encoder : Lavf61.1.100
>> Duration: 00:03:58.88, start: 0.000000, bitrate: 7671 kb/s
>> Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661),
>> yuvj420p(pc, smpte170m/unknown/unknown, progressive), 1440x1080 [SAR 4:3
>> DAR 16:9], 7536 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
>> Metadata:
>> handler_name : VideoHandler
>> vendor_id : [0][0][0][0]
>> Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
>> stereo, fltp, 129 kb/s (default)
>> Metadata:
>> handler_name : SoundHandler
>> vendor_id : [0][0][0][0]
>> Stream mapping:
>> Stream #0:0 -> #0:0 (h264 (native) -> hevc (hevc_vulkan))
>> Stream #0:1 -> #0:1 (aac (native) -> aac (native))
>> Press [q] to stop, [?] for help
>> Impossible to convert between the formats supported by the filter
>> 'Parsed_null_0' and the filter 'auto_scale_0'
>> [vf#0:0 @ 0x561e923dd540] Error reinitializing filters!
>> [vf#0:0 @ 0x561e923dd540] Task finished with error code: -38 (Function
>> not implemented)
>> [vf#0:0 @ 0x561e923dd540] Terminating thread with return code -38
>> (Function not implemented)
>> [vost#0:0/hevc_vulkan @ 0x561e9243b200] Could not open encoder before EOF
>> [vost#0:0/hevc_vulkan @ 0x561e9243b200] Task finished with error code:
>> -22 (Invalid argument)
>> [vost#0:0/hevc_vulkan @ 0x561e9243b200] Terminating thread with return
>> code -22 (Invalid argument)
>> [out#0/mp4 @ 0x561e924a7a00] Nothing was written into output file,
>> because at least one of its streams received no packets.
>> frame= 0 fps=0.0 q=0.0 Lsize= 0KiB time=N/A bitrate=N/A speed=N/A
>> [aac @ 0x561e92cc4f80] Qavg: 208.809
>> Conversion failed!
>>
>> =====================
>
> ah, syntax was slightly different, you apparently need to "link"
> vulcan decode and filtering via common naming?
I am afraid I don't understand how to "link vulkan decode and filtering
via common naming?"
Could you possibly give me one or two examples to test with my code line?
>
> My line fails in similar way:
>
> ./bin/ffmpeg711-vulkan -init_hw_device vulkan=vk:0 -filter_hw_device
> vk -hwaccel vaapi -hwaccel_output_format vaapi -i
> ~/K38_sdcard1/Documents/iPhone11_4K-recorder_59.940HDR10.mov -vf
> libplacebo=colorspace=bt709:color_primaries=bt709:color_trc=bt709:range=tv
> -c:a copy -c:v hevc_vulkan -f avi /dev/null
> ffmpeg version 7.1.1 Copyright (c) 2000-2025 the FFmpeg developers
> built with gcc 11.2.0 (GCC)
> configuration: --enable-opencl --disable-debug --enable-libx265
> --enable-libx264 --enable-gpl --enable-libplacebo --enable-vulkan
> --enable-libshaderc --enable-libzimg --enable-libaom --enable-libdav1d
> --enable-libsoxr --enable-libfontconfig --enable-libfreetype
> --enable-libfribidi --enable-gnutls --enable-libass --enable-libbluray
> --enable-libcdio --enable-frei0r --enable-libgsm --enable-openal
> --enable-libopus --enable-librtmp --enable-libsnappy --enable-libspeex
> --enable-libssh --enable-libtheora --enable-libtwolame
> --enable-libv4l2 --enable-libvidstab --enable-libvorbis
> --enable-libvpx --enable-libwebp
> libavutil 59. 39.100 / 59. 39.100
> libavcodec 61. 19.101 / 61. 19.101
> libavformat 61. 7.100 / 61. 7.100
> libavdevice 61. 3.100 / 61. 3.100
> libavfilter 10. 4.100 / 10. 4.100
> libswscale 8. 3.100 / 8. 3.100
> libswresample 5. 3.100 / 5. 3.100
> libpostproc 58. 3.100 / 58. 3.100
> [aist#0:1/pcm_s16le @ 0xc4c4740] Guessed Channel Layout: stereo
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from
> '/home/guest/K38_sdcard1/Documents/iPhone11_4K-recorder_59.940HDR10.mov':
> Metadata:
> major_brand : qt
> minor_version : 0
> compatible_brands: qt
> creation_time : 2020-12-18T22:20:29.000000Z
> com.apple.quicktime.creationdate: 2020-12-18T17:20:29-0500
> com.apple.quicktime.location.ISO6709: +33.4233-084.5802/
> Duration: 00:00:19.16, start: 0.000000, bitrate: 69140 kb/s
> Stream #0:0[0x1](und): Video: hevc (Main 10) (hvc1 / 0x31637668),
> yuv420p10le(pc, bt2020nc/bt2020/smpte2084), 3840x2160, 64166 kb/s,
> 59.92 fps, 59.94 tbr, 600 tbn (default)
> Metadata:
> creation_time : 2020-12-18T22:20:29.000000Z
> handler_name : Core Media Video
> vendor_id : [0][0][0][0]
> encoder : HEVC
> Stream #0:1[0x2](und): Audio: pcm_s16le (lpcm / 0x6D63706C), 48000
> Hz, stereo, s16, 1536 kb/s (default)
> Metadata:
> creation_time : 2020-12-18T22:20:29.000000Z
> handler_name : Core Media Audio
> vendor_id : [0][0][0][0]
> File '/dev/null' already exists. Overwrite? [y/N] y
> Stream mapping:
> Stream #0:0 -> #0:0 (hevc (native) -> hevc (hevc_vulkan))
> Stream #0:1 -> #0:1 (copy)
> Press [q] to stop, [?] for help
> Impossible to convert between the formats supported by the filter
> 'graph -1 input from stream 0:0' and the filter 'auto_scale_0'
> [vf#0:0 @ 0xc4e1a00] Error reinitializing filters!
> [vf#0:0 @ 0xc4e1a00] Task finished with error code: -38 (Function not
> implemented)
> [vf#0:0 @ 0xc4e1a00] Terminating thread with return code -38 (Function
> not implemented)
> [vost#0:0/hevc_vulkan @ 0xc43b780] Could not open encoder before EOF
> [vost#0:0/hevc_vulkan @ 0xc43b780] Task finished with error code: -22
> (Invalid argument)
> [vost#0:0/hevc_vulkan @ 0xc43b780] Terminating thread with return code
> -22 (Invalid argument)
> [out#0/avi @ 0xc43be00] Nothing was written into output file, because
> at least one of its streams received no packets.
> frame= 0 fps=0.0 q=0.0 Lsize= 0KiB time=N/A bitrate=N/A speed=N/A
> Conversion failed!
> bash-5.1$
>
>
>
>> Benchmarking works:
>>
>> ffmpeg -hide_banner -init_hw_device "vulkan=vk:0" -hwaccel vulkan
>> -hwaccel_output_format vulkan -i hdv09_04_h264_qsv_8b420.mp4 -f null -
>> -benchmark
>> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'hdv09_04_h264_qsv_8b420.mp4':
>> Metadata:
>> major_brand : isom
>> minor_version : 512
>> compatible_brands: isomiso2avc1mp41
>> encoder : Lavf61.1.100
>> Duration: 00:03:58.88, start: 0.000000, bitrate: 7671 kb/s
>> Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661),
>> yuvj420p(pc, smpte170m/unknown/unknown, progressive), 1440x1080 [SAR 4:3
>> DAR 16:9], 7536 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
>> Metadata:
>> handler_name : VideoHandler
>> vendor_id : [0][0][0][0]
>> Stream #0:1[0x2](eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
>> stereo, fltp, 129 kb/s (default)
>> Metadata:
>> handler_name : SoundHandler
>> vendor_id : [0][0][0][0]
>> Stream mapping:
>> Stream #0:0 -> #0:0 (h264 (native) -> wrapped_avframe (native))
>> Stream #0:1 -> #0:1 (aac (native) -> pcm_s16le (native))
>> Press [q] to stop, [?] for help
>> Output #0, null, to 'pipe:':
>> Metadata:
>> major_brand : isom
>> minor_version : 512
>> compatible_brands: isomiso2avc1mp41
>> encoder : Lavf61.7.100
>> Stream #0:0(und): Video: wrapped_avframe, vulkan(pc,
>> smpte170m/unknown/unknown, progressive), 1440x1080 [SAR 4:3 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 : Lavc61.19.101 wrapped_avframe
>> Stream #0:1(eng): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
>> (default)
>> Metadata:
>> handler_name : SoundHandler
>> vendor_id : [0][0][0][0]
>> encoder : Lavc61.19.101 pcm_s16le
>>
>>
>>
>> --
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>> Cin at lists.cinelerra-gg.org
>> https://lists.cinelerra-gg.org/mailman/listinfo/cin
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