Hello @g4guo Charles and @f5oeo Everiste,
I have been doing some broadcast using the “LimeSDRExpress” and finding some interesting situations, If I have a static image filling the entire screen, it starts to deteriorate the picture, if I have a ticker tape running across the screen the deterioration is sometimes non existent and other time the ticker tape becomes a smudge along the screen until I presume GOP fixes things up. The GOP repair only seems to have an effect when there is motion on the screen. I played with the GOP value in DATVExpress and tried lowering the starting value of 10 to 3 which seemed to help with static images, but then motion seems to become blocky. I do use 5Msymboles to access our local repeater so I guess data rates are higher than other uses of the DATV Express software.
I downloaded your latest version seeing that you had check boxes to allow selection of output device (DATV Express, Pluto. LimeSDR etc) only to find it is only valid for Pluto operation.
I am just curious as to whether either of you two guru have done any investigation into having the DATV Express software incorporate the LimeSDR functionality?
Regards,
Bevan