вс, 11 янв. 2026 г., 20:21 Terje J. Hanssen via Cin <cin@lists.cinelerra-gg.org>:

Den 10.01.2026 21:57, skrev Phyllis Smith via Cin:

No vulkan render formats have been added. I do not have the hardware to test either (I really need a new kick-axx computer!)

But because you have Andrey's package installed, maybe you test yourself (only not sure about the first line):

1. cd <wherever the package is installed>/bin/ffmpeg/video

2. cp hevc_vaapi_10b420.mp4 hevc_vulkan_10b420.mp4

3. edit hevc_vulkan_10b420.mp4 and change the first line from "mp4 hevc_vaapi" to "mp4 hevc_vulkan".

4. restart CinGGG

cd /usr/share/cin/ffmpeg/video

Copied and edited the preset

cat h264_vulkan_8b420.mp4

mp4 h264_vulkan
# Requires specific GPU hardware encoding capability
# as well as required software implementation.
cin_hw_dev=vulkan
cin_pix_fmt=nv12
profile=high
# global_quality=22

but using this cause a Cinelerra error and no rendering:

int FFMPEG::open_encoder(const char*, const char*):
Cant find codec h264_vulkan:/Videoklipp/VULKAN/hdv1080i50_cin_h264_vulkan_8b420.mp4

--------

Is Vulkan enabled via Cingg's built-in ffmpeg, or is there other reasons it won't work?

I think if you use cingg with internal ffmpeg libs you should pass newly-added --enable-vulkan configure switch? If vulkan sdk is new enough this should tell ffmpeg to enable various encoders and decoders based on Vulkan video. I think I tied libshaderc (shader compiler) to libplacebo enable, while it theory it can have its own switch. but only Vulkan-shaders based decoders and encoders depend on that (compared to driving dedicated hw blocks via Vulkan) so right now at ffmpeg-8.0 I think this is not really limiting. You can try to install libplacebo/libzimage devel libs, enable all three switches and see if it compiles/runs fine?

-----

In comparison my system ffmpeg-8 works on my machines with Intel iGPU UHD 620 and also HD 530 (but unhappily not yet on the most powerful Arch A750 (DG2) for unknown reasons).

ffmpeg -hide_banner -init_hw_device "vulkan=vk:0" -hwaccel vulkan -hwaccel_output_format vulkan -i hdv1080i50.m2t -vf "format=nv12,hwupload" -c:v h264_vulkan -y hdv1080i50_h264_vulkan_nv12_vk0.mp4
.....
frame= 123 fps=0.0 q=-0.0 Lsize= 16876KiB time=00:00:05.30 bitrate=26065.5kbits/s speed=12.6x elapsed=0:00:00.41
[aac @ 0x56359d824b40] Qavg: 217.60

---------

Adding "-global_quality 25" (rather than -profile) reduce the file size to 1/5

du -sh hdv1080*
20M hdv1080i50_h264_main_vulkan_nv12_vk0.mp4
10M hdv1080i50_h264_vaapi_nv12.mp4
3.4M hdv1080i50_h264_vulkan_gq25_nv12_vk0.mp4
17M hdv1080i50_h264_vulkan_nv12.mp4
17M hdv1080i50_h264_vulkan_nv12_vk0.mp4
16M hdv1080i50.m2t
On Sat, Jan 10, 2026 at 12:50 PM Terje J. Hanssen via Cin <cin@lists.cinelerra-gg.org> wrote:

Den 02.12.2025 16:39, skrev Andrew Randrianasulu:
> On Tue, Dec 2, 2025 at 6:20 PM Terje J. Hanssen via Cin
> <cin@lists.cinelerra-gg.org> wrote:
>> Late 2024 onevpl support was added for the buildsystem with various
>> presets using cin_hw_dev=vaapi.
>>
>> Maybe I simplify too much, but is it possible that current
>> CinGG-20251121-x86_64.AppImage with ffmpeg-8 is ready to test vulkan the
>> same way, just by replacing "vaapi" with "vulkan" in the presets?
> I have no hardware to test, but I think if/when latest patches by me
> lands and it will be confirmed new appimage copies vulkan loader and
> it works on different systems ...
>
> Then you can play with new Vulkan encoding presets :)
>
> Moment, about to send second patch

I have the latest CinGG-20251231-x86_64.AppImage and
cinelerra-5.1-20260106.susetw.x86_64.rpm installed on openSUSE Tw-Slowroll.

Shift-Render and Video-Wrench Compression list the previous vaapi and
qsv hwaccel methods.

Shouldn't we also see a base Vulkan tag here to start experimenting with
presets?

>
>> hevc_vaapi_8b420.mp4
>>
>> mp4 hevc_vaapi
>> cin_hw_dev=vaapi
>> cin_pix_fmt=nv12
>> profile=main
>> # global_quality=22
>>
>>
>> hevc_vaapi_10b420.mp4
>>
>> mp4 hevc_vaapi
>> cin_hw_dev=vaapi
>> cin_pix_fmt=p010le
>> profile=main10
>> # global_quality=22
>>
>>
>> hevc_vaapi_10b422.mp4
>>
>> mp4 hevc_vaapi
>> cin_hw_dev=vaapi
>> cin_pix_fmt=y210le
>> profile=rext
>> # global_quality=22
>>
>>
>> Terje J. Hanssen
>>
>>
>> _______________________________________________
>> Cin mailing list -- cin@lists.cinelerra-gg.org
>> To unsubscribe send an email to cin-leave@lists.cinelerra-gg.org

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