In the designer I selected STM32L496G-DISCO. But no success.I know it will only support software decoding, but still I will try it for my application. (small display and low fps).
https://support.touchgfx.com/docs/development/touchgfx-hal-development/scenarios/scenarios-video-decoding/#software-decodingThe software decoding solution requires that the LibJPEG middleware is enabled from CubeMX, as specified in TouchGFX Generator...