No audio, full version VS11, AC3 filiter installed

[formaldehyde]

I have recorded a HDTV stream in native mpeg format. I can watch it in windows media player and winamp fine, but when I preview it in videostudio I get no audio. I have the full version of Videostudio 11 (upgrade from 8SE) and have installed AC3 filter.

AC3 details

Input format: AC3 - 48000
User format: PCM16 2/0 (stereo) 0
Output format: PCM16 Dolby Surround 48000

Decoding chain:
(AC3 - 48000) -> Decoder -> (Linear PCM Dolby Surround 48000) -> Processor -> (PCM16 Dolby Surround 48000) -> Dejitter -> (PCM16 Dolby Surround 48000)

Filters info (in order of processing):

Decoder:
Stream format: AC3 Dolby Surround 48000Hz
Bitstream type: byte stream
Frame size: 1536
Samples: 1536
Bitrate: 384kbps
SPDIF stream type: 0x1
Frame interval: 1536
Actual bitrate: 384kbps
AC3
speakers: Dolby Surround
sample rate: 48000Hz
bitrate: 384kbps
stream: 8 bit
frame size: 1536 bytes
nsamples: 1536
bsid: 8
clev: 0.0dB (1.0000)
slev: 0.0dB (1.0000)
dialnorm: -27dB
bandwidth: 20kHz/20kHz

Processor:
(Linear PCM Dolby Surround 48000) -> Input levels -> (Linear PCM Dolby Surround 48000) -> Mixer -> (Linear PCM Dolby Surround 48000) -> Bass redirection -> (Linear PCM Dolby Surround 48000) -> AGC -> (Linear PCM Dolby Surround 48000) -> Delay -> (Linear PCM Dolby Surround 48000) -> Output levels -> (Linear PCM Dolby Surround 48000) -> Linear->PCM converter -> (PCM16 Dolby Surround 48000)

[Ken Berry]

Can you tell us exactly why you installed AC3 filter? Did VS11's native capacity to handle Dolby surround (if that is the audio format you are capturing) not work?

Can you also advise whether you have VS11 or VS11+...

[formaldehyde]

I have VS11+

The audio to the track isn't being recognised by VS, I got the details from winamp. VS just has the audio as "none". I thought that maybe there was some aspect of the audio stream that VS wasn't handling properly, so I installed AC filter based on recommendations in this forum for previous versions of VS.