How to encode a PNG (lossless) to JPEG?

[S3Y3D]

Hi guys,
I need to convert Kodak dataset PNG files into JPEG files at specific bitrate to see the results.
How can I do that using CompressAI?

Thanks 🌻

[harleyzhang]

You don't need compress AI. Any jpeg encoder can do that, for example, JPEG XT. https://jpeg.org/jpegxt/software.html

[S3Y3D]

Thanks @harleyzhang 🌻
But which one is the standard JPEG encoder? JPEG 1, JPEG XL, JPEG XS, JPEG XT , ... ?
I mean the one used in CompressAI's Image below.

[fracape]

That is basic JPEG that ships with Pillow. The codecs referenced in this figure are run using compressai.utils.bench. In particular JPEG here

[S3Y3D]

Thanks 🌻