Hello, will try to explain detailed.
Mgcamd won't decrypt AC3 audio, Mp2 and aac are working ok.
This particular channel only has 1 single AC3 audio stream, so No sound , only video decrypted.
Box DM800HD with OpenPli 4.0 Mgcamd 1.35/1.38c + single N line (on local PC server just for test)...