The formats are constantly changing, I'm producing and delivering to television broadcasting stations in different markets. Here are the specs for the file that I'm dealing with now.
File Extension: .mov
Center-cut Safety: Required
Compression Codec: H.264
Resolution: 1920x1080 (1080p) (center-cut safe)
Frame Rate: 29.97 fps (constant/fixed)
Video Bit Rate: 30Mb/s — if possible, select "Restrict to 30Mb/s" in the Data Rate pane
Scan Type: Progressive (1080p)
Audio Specs (AAC option):
Audio Type: AAC
2 Channel Stereo (Ch1, Ch2)
No SAP or Descriptor Audio
Sample Rate: 48khz
Bit Rate: 250Kbps-384kbps
I'm spot on with the video specs unfortunately I'm having nothing but difficulties with the audio.
A couple of more questions if I could:
Are you working with an H.264 sequence in FCP?
If you mark a short range in your timeline and export that as a master file, do you have sound if played in QT Player?
In Compressor, what h.264 preset did you use – or which one served as the basis for a custom preset? (There are several ways to build a custom preset in Compressor.)
In the Video Settings tab, is audio enabled?
Could you post a screen shot of your summary pane from the Inspector?
Guess that's more than a couple.