ffmpeg force libx265 using GPU

[kucing]

sorry for my bad English,

it about this :
https://forum.videohelp.com/threads/403540-Why-the-default-libx265-is-much-more-effici..._nvenc-encoder

for input i use :
Big Buck Bunny 60fps 4K - Official Blender Foundation Short Film
h264, 720p, Size on disk : 153 MB (161.193.984 bytes)

ffmpeg -i "Big Buck Bunny 60fps 4K - Official Blender.mp4" -c:v libx265 -c:a copy libx265.mp4
ffmpeg -i "Big Buck Bunny 60fps 4K - Official Blender.mp4" -c:v hevc_nvenc -c:a copy hevc_nvenc.mp4

libx265
average ffmpeg speed : 1x
ffmpeg time spend : 810 seconds 
CPU temp : 80-85C
GPU temp : 38C
Size on disk : 69,2 MB (72.564.736 bytes)

hevc_nvenc
average ffmpeg speed : 12x
time spend : 54 seconds
CPU temp : 65C
GPU temp : 44C
Size on disk : 168 MB (176.164.864 bytes)

my question is : is there a way to put this libx265 to GPU powered but not hevc_nvenc?

[bettergenes]

1. libx265 is a strictly software encoder that uses you CPU to encode videos

2. hevc_nvenc is a strictly hardware encoder that uses your GPU to encode videos

3. you can't encode videos with libx265 using your GPU, because it's a strictly software encoder

[kucing]

i mean, there an alternative beside ffmpeg to use libx265 but use GPU, but not hevc_nvenc?

[dietboby]

I'm not sure if I understand this correctly.
But what you looking for seems to be a hybrid that uses both. CPU and GPU.
The only software that crossed my mind is the Mainconcept Hybrid HEVC encoder, which is payware but has a trial version.

https://www.mainconcept.com/ffmpeg#try-free

[kucing]

I'm not sure if I understand this correctly.
But what you looking for seems to be a hybrid that uses both. CPU and GPU.
The only software that crossed my mind is the Mainconcept Hybrid HEVC encoder, which is payware but has a trial version.

https://www.mainconcept.com/ffmpeg#try-free

thank you for the reply,
i look that page and found this

Hybrid GPU-accelerated HEVC encoding modes on NVIDIA RTX boards

my GPU is Low-End GTX

[dietboby]

I did re read and when I scroll down it lists

Hardware-accelerated encoding powered by AMD AMF, Intel Quick
Sync Video and NVIDIA NVENC

I'll give it a test run later

[ProWo]

If it should be x265, then you can use hevc_amf (AMD hardware) or hevc_qsv (Intel hardware) in addition to hevc_nvenc (nVidia hardware), both with or without hardware decoding support.
Try them with clever FFmpeg-GUI, if the hardware support is missing, you will get an error message.


[Attachment 85280 - Click to enlarge]

[kucing]

@dietboby To be honest, I don't understand how this FFmpeg Plugins work,
usually i download exe(s) and it ready to go,
i read the manual and see this words : Github, SDKs, Applications, Plugins,
and this Hybrid HEVC Encoder Plugin for $99, I should give up on this