[FFmpeg-user] Decoding performance, 6.1.1 vs. 4.4.4

[Carl Zwanzig]

On 1/10/2024 4:18 AM, Ren� J. V. Bertin wrote:
> (sorry for the linebreaks, I'm posting via a newsgroup app.)

(Use an email program instead?)

> To me this looks like there's been a regression that causes an increased
> overhead in getting the content onto and/or off the GPU.

Have you controlled for the graphics drivers (same for each build)?
Also, try doing both builds with the same compiler.


> Is that possible? Could it have to do with the fact that FFmpeg6 auto-enables
> support for hw-acceleration via Vulkan (a moot selling point on this hardware)
> and if so would it help to disable that support?

Definitely disable it for a better comparison, there may be extra steps in 
the data pathways which could affect the speed.

Later,

z!