[Cin] Testing Nvidia Nvenc encoding

[Terje J. Hanssen]

Continued and extracted from
[Cin] Video accelerators support, builds and use
https://lists.cinelerra-gg.org/pipermail/cin/2024-December/009226.html

Den 12.12.2024 00:54, skrev Terje J. Hanssen:
>
> Den 11.12.2024 23:56, skrev Andrew Randrianasulu:
>>
>> чт, 12 дек. 2024 г., 00:43 Terje J. Hanssen via Cin 
>> <cin at lists.cinelerra-gg.org>:
>>
>>     To clarify some pieces once again, I put up some basic statements
>>     or questions:
>>
..........snip
>>
>>
>>         So what happened when adding oneVPL (qsv) support to the
>>         build system; dynamic linked to system or static added
>>         embedded into the build?
>>
>>
>>     dynamic
>>
>>     .....snip
>>
>>         Could in principle similar methods be extended to include
>>         broader video acceleration support for AMD/amf and NVIDIA/nvenc?
>>
>>
>>     nvenc already supported, I think? At some point I tried it with
>>     GF710 on livedvd and it was working for me. try to test it if you
>>     have proprietary nvidia drivers.
>>

Apparently Cingg then should supports NVENC via some dynamic linked 
external Nvidia lib, equivalent to what we did for for QSV via oneVPL 
support.
While h264_nvenc.mp4 rendering works, h265_nvenc.mp4 fails with the 
following errors, see detail below:

[hevc_nvenc @ 0x7ff79c015640] No capable devices found
FFMPEG::open_encoder  err: Generic error in an external library


>
> Yes, seemingly:
> Cin/bin/ffmpeg/video> ls *nvenc*
> h264_nvenc.mp4  h264_nvenc.qt  h265_nvenc.mp4

NVENC Presets

cat h264_nvenc.mp4
mp4 h264_nvenc
# encode for nvidia graphics hw only
preset medium
profile main

cat h265_nvenc.mp4
mp4 hevc_nvenc
# encode for nvidia graphics hw only
preset medium
profile main

>
> Maybe I can do an attempt later, if I get life in the old GeForce GTX 
> 960 in my Skylake workstation.
>

Setup
----------
Booted BIOS and checked that the integrated Intel gpu and multimonitor 
setup were  enabled.
Installed the suse-prime package for nvidia/intel gpu selection (for 
NVIDIA optimus laptops with bbswitch support) and could then run the command

prime-select on-demand

and verified that both the Intel and Nvidia drivers were available

inxi -G
Graphics:
   Device-1: Intel HD Graphics 530 driver: i915 v: kernel
   Device-2: NVIDIA GM206 [GeForce GTX 960] driver: nvidia v: 550.135
   Display: wayland server: X.org v: 1.21.1.14 with: Xwayland v: 24.1.4
     compositor: gnome-shell v: 47.2 driver: X: loaded: modesetting,nvidia
     unloaded: fbdev,vesa dri: iris gpu: i915 resolution: 1920x1080~60Hz
   API: OpenGL v: 4.6 vendor: intel mesa v: 24.3.1 renderer: Mesa Intel HD
     Graphics 530 (SKL GT2)
   API: EGL Message: EGL data requires eglinfo. Check --recommends.

==============


Test h264_nvenc.mp4
-------------------
OK

./CinGG-20241120-x86_64.AppImage
Cinelerra Infinity - built: Nov 20 2024 22:06:05

Loads hdv09_04.m27
Shift-R
mp4
h264_nvenc (video preset)
pixels: yuv420p (default)

** rendered 5972 frames in 27.391 secs, 218.028 fps

ffprobe -hide_banner hdv09_04_h264_nvenc_yuv420p.mp4
   Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), 
yuvj420p(pc, smpte170m/unknown/unknown), 1440x1080 [SAR 4:3 DAR 16:9], 
2156 kb/s, 25 fps, 25 tbr, 12800 tbn (default)

-------

Tried also h264_nvenc with
pixels: nv12
which for slowed down to 45% speed !?

Render::render_single: Session finished.
** rendered 5972 frames in 60.368 secs, 98.927 fps

ffprobe -hide_banner hdv09_04_h264_nvenc_nv12.mp4
   Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), 
yuvj420p(pc, smpte170m/unknown/unknown), 1440x1080 [SAR 4:3 DAR 16:9], 
2154 kb/s, 25 fps, 25 tbr, 12800 tbn (default)

===================

Test h265_nvenc.mp4
-------------------

Did not render, neither with pixels yuv420p nor nv12:
FFMPEG::open_encoder err: Generic error in an external library

[hevc_nvenc @ 0x7ff79c015640] No capable devices found
FFMPEG::open_encoder  err: Generic error in an external library
int FFMPEG::open_encoder(const char*, const char*):
open failed 
hevc_nvenc:/run/media/terje/video/hdv09_04_h265_nvenc_yuv420p.mp4
Render::render_single: Session finished.

===================

GeForce GTX 960 (GM206) should be capable to manage NVENC h265/hevc YUV 
420 encoding
https://en.wikipedia.org/wiki/Nvidia_NVENC#Third_generation,_Maxwell_GM20x
https://developer.nvidia.com/video-encode-and-decode-gpu-support-matrix-new

Tested hevc_nvenc full transcoding with FFmpeg 7.1

ffmpeg -hide_banner -hwaccel cuda -hwaccel_output_format cuda -i 
hdv09_04.m2t -c:v hevc_nvenc hdv09_04_ff_hevc_nvenc.mp4

frame= 5963 fps=270 q=34.0 Lsize=   64316KiB time=00:03:58.77 
bitrate=2206.6kbits/s speed=10.8x
[aac @ 0x55a38d4c4d40] Qavg: 488.890

------------------

ffprobe -hide_banner hdv09_04_ff_hevc_nvenc.mp4
Stream #0:0[0x1](und): Video: hevc (Main) (hev1 / 0x31766568), 
yuv420p(tv, bt709, top coded first (swapped)), 1440x1080 [SAR 4:3 DAR 
16:9], 2074 kb/s, 24.99 fps, 25 tbr, 12800 tbn (default)





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