I have an HDTV project all shot and set up with 5.1 channel audio. But when I open the Media Encoder (to encode for Blue Ray) all I see is Stereo in the Audio section. I see no way to encode it with the 5.1 audio. Please advise.
Well, first, the only way that PP can encode 5.1 AC3 audio is using SurCode which is included with PP as a trial. You have 3 uses and after that you have to buy it.
Second, as far as I can tell, it only turns up as an option when you select ether MPEG-2 DVD or MPEG-2 BluRay as your output options, but not when you select H.264 Blu-Ray. There is a way around this however.
You just need to export the audio and the video separately. Select MPEG-2 Blu-Ray and export just the audio, (uncheck the "export video" checkbox) then select H.264 Blu-Ray and export just the video.
You can marry the two back together in Encore and output the disk.
Sorry I can't help you get around the 3 trial uses... you'll have to ether buy it or use another program after that.