Is it possible to use with ffmpeg?

[wyup]

Hi,
I'd like to use openJPH with ffmpeg instead of libopenjpeg jpeg2000 codec.
Is it possible to include it in Media Audobuild Suite script?

[aous72]

Hi wyup,

I do not know. I never tried it.
Perhaps, you can try and let us know.

Cheers,
Aous.

[wyup]

Does it need CUDA to work?

[aous72]

No CUDA needed.

[wyup]

My intention is to use openJPH for decoding.
I've got a i5-13500 with UHD770 iGPU with OpenCL 3.0 NEO Full Profile. Does openJPH use OpenCL for decoding acceleration or just the CPU?
By curiosity, how does it compare to Kakadu and libopenjpeg for J2K decoding?

[aous72]

It uses CPU only, in single thread mode.
Kakadu and libopenjpeg are multi-threaded.
Kakadu is faster, even in single threaded mode.
OpenJPH should be faster than libopenjpeg in single-threaded decoding. For multi-threading, not sure about libopenjpeg.
libopenjpeg does not have HTJ2K encoding, yet.