How long does it takes to switch a FTA channel on your system? In my case DVB-S.
I wonder if this timing sounds ok to you (I think its kind of slow): 1.7.1 + ext64-livebuffer + xinelibout
2 channels on the same transponder - about 2 seconds - video and sound playing right after the switch. 2 channels on different transponders - about 4 seconds - sound is playing right after the switch, image is shown, but start moving about 1 more second later.
Please let me know what is your status on that (including version you're using).
yes, currently I have the same situation as you. vdr 170 + cvs xineliboutput + svn ffmpeg
Goga