and if you have two identical DVB devices (which use the very same interface), just select the index of device you want to use (right above "show all devices" check-box).

you may try to switch OFF playback (renderless mode) while recording.
Looks like your PC is not fast enough to do both jobs simultaneously.

you do not need DVB-s application to watch recordings.
You need a player.
There are plenty of free players to do that: Media Player Classic, VLC, etc.

you can run two instances of DVB Dream (you may want to install them in separate folders - each installation will remember the tuner you used last time).

the SDK you provided is for B2C2.
you probably have to find why B2C2 interface is not working with your card first.

So u mean there is no solution for my problem ?! there is a solution. You either need 1) to use DVB-s card from the list of supported devices or 2) write your own interface for this card (or find a person who can write this interface; or ask manufacturer for SDK for this card, upload it here, and s...

since it's happening only at H polarity, one may think that this is hardware related problem. are you sure your LNB is OK? Have you tried different receiver with it? Or, it may be related to your DVB-s card (which generates unstable 18V LNB voltage). Have you measured the voltage (under usual load)?...

diseqc support was not included into original BDA standard (it was added later, in PBDA standard). Thus, generally speaking, BDA drivers do not work with diseqc devices (switches and motors). Unless the application is aware of the way how to use non-documented features of particular BDA driver. whic...

are you sure that this is NOT happening only when you switch satellites?
for instance, your diseqc switching is glitchy (most often because of incorrect dish grounding).
This would explain why switching within a satellite is reliable but between satellites is not.

did you enable "use double click to change channel" in preferences?

codec selection in DVB Dream have no affect on recorded file. What format did you use to record the file, mpg or TS? Try TS, it has better compatibility with other programs. And make Audio Sync = 0 ms (in the same tab). Your VirtualDub may have incorrectly read the audio-video delay from recorded fi...

and you know that you can not tune DVB-S2 transponders with this card, right?

can you reproduce such behavior when all plug-ins are disabled?
have you tried different codecs? or switch to render-less mode before exiting from the program?

From the device manager, I tried updating the driver, and does not recognize those files "skystar_hd2_1.1.1.901.rar"

file with "rar" extension is archive file.
You need the program like WinRAR to extract files from this archive.