Silent / Mute AC3 track after encoding in Compressor 2

Hi,
I exported audio from a 2hr 27min time line in FCP 4.5 to create an .aif file.
I then transcoded it to an .AC3 file on my macbook using Compressor 2. When I listen to it in VLC, it all sounds perfectly fine. But when I import it into DVD Studio Pro 3, it is silent / mute.
I have looked back over this forum and found several people reporting similar problems, without any solution.
Grateful for any suggestions.
Thanks
Jamie

Here is another possibility. If you added you ac3 to a menu or track and then made additional corrections in FCP and recompressed them to the same name, DVDSP has a bit of trouble updating sometimes....not sure why, but a quick solution is to re compress again, but with a different name. then relpace the old one with the new one in DVDSP. same thing happens with video sometimes.
g4 duel 1 gig

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You might get better responses in the DVD Studio Pro or Compressor forum?

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General
Complete name : /Users/tester/Movies/export-tests/test24trailer.mpg
Format : MPEG-PS
File size : 12.9 MiB
Duration : 12s 576ms
Overall bit rate mode : Variable
Overall bit rate : 8 614 Kbps
Video
ID : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@High
Format settings, BVOP : Yes
Format settings, Matrix : Default
Format settings, GOP : Variable
Duration : 12s 533ms
Bit rate mode : Variable
Bit rate : 7 995 Kbps
Maximum bit rate : 38.8 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Active Format Description : Letterbox 16:9 image
Frame rate : 59.940 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.145
Stream size : 11.9 MiB (92%)
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ID : 189 (0xBD)-128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Format settings, Endianness : Big
Muxing mode : DVD-Video
Duration : 12s 576ms
Bit rate mode : Constant
Bit rate : 448 Kbps
Channel(s) : 6 channels
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I have a project with stereo music and mono announce track "left filled" onto the right also.
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http://DingDingMusic.com/Manuals/
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GIGO does not apply in this case
I bet it does...
the AVI was only 1hr 45min so it's not too long
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DSP3.0.2
QT6.5.2
I been using DSP3 for years and haven't encountered this rather odd problem before.
I have a basic DVD with menu and 3 tracks. Each track is about 30 mins. I've placed a chapter marker at 5 min intervals throughout each track and one chapter marker 1 second before the end of each track.
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Building Project Ghost Stories 2007_01
21/01/07 10:25:00
Build Folder /Volumes/Video02/x05-DVD_Movies/Built Projects/GhostStories2007-01
Starting DVD Build GHOST_STOPRIES...
Compiler Initializing...
Precompiling Project GHOST_STOPRIES
Compiling VMG Information...
Created 17 PGCs in VTSM1
Created 5 PGCs in VTSM2
Created 5 PGCs in VTSM3
Created 8 PGCs in VMG.
4 Menu(s) will be created...
Compiling Menu PGCs...
Compiling Menu#1 (dummy 1)...
dummy 1 : No Buttons defined!
Compiling Menu#2 (Copyright)...
Copyright : No Buttons defined!
Compiling Menu#3 (dummy 2)...
dummy 2 : No Buttons defined!
Compiling Menu#4 (Main Menu 2)...
Rendering Menu:Main Menu 2,Language:1...
Generating Transition: VTSM #01, VOB #1...
Generating Transition: VTSM #01, VOB #2...
Writing VIDEO_TS.VOB
Compiling Menu PGCs...
Writing VTS020.VOB
Compiling Menu PGCs...
Writing VTS030.VOB
3 VTSs and 3 Titles will be created...
Compiling VTS#1 (001)...
Muxing VTS011.VOB
Done.
Compiling VTS#2 (002)...
Writing VTS020.VOB
Muxing VTS021.VOB
Done.
Compiling VTS#3 (003)...
Writing VTS030.VOB
Muxing VTS031.VOB
Done.
Linking VMG...
Linking VTS#1...
Linking VTS#2...
Linking VTS#3...
Writing VTS#1...
Writing VTS#2...
Writing VTS#3...
Writing VMG...
Writing Layout Info...
Build Warning: Compiled project is 1717.2 MB too large for currently selected disc media.
Compile Completed Successfully

Thanks Jason.
I may have explained it poorly, but the original m2v file didn't have any footage repeated at the end after encoding the MOV footage. What you describe is obviously possible, but it isn't what was happening here.
The repeated footage only appeared after the project build. It as though something in the build process decided to go back and repeat some footage at the end of that track. Weird.
Anyway I eventually re-encoded all the m2v from the project, (after deleting all the original), using the same settings as before, same bit rate etc, and tried again. This time the build didn't repeat any footage atthe end of the track.
So all is fine now, but as to what caused the problem, I have no idea.

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Igor,
Always glad to help, even if not directly.
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Silent / Mute AC3 track after encoding in Compressor 2

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