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Old 12-20-2004, 07:41 PM
m1abrams's Avatar
m1abrams m1abrams is offline
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Posts: 445
Audio Sync Issue with just DVDs and DVD files

I have noticed with 2 different audio decoders that the audio is delayed when playing back a DVD on disc or a DVD from file.

I have tried both nvidias audio decoder and ac3filter. Both are set to spdif pass-thru, and the delay happens when using either DD or DTS tracks. The delay seems to be about the same amount with both decoders. I have tried playing with the lip/sync time in the decoders using radlight but that does not seem to affect anything. The audio seems to be behind the video.

Now if I play the same movie thru WinDVD5 with passthru it is fine. I tried using Intervideos decoders but they seem to only ouput PCM when not used through WinDVD (note I can get spdif pass thru with WinDVD5, just not with using its decoders in SageTV).

Any tricks to fixing this, I have searched the forums and tried a few things but nothing seems to help. It is also very time consuming, playing the video t o a good ref. point test, change a decoder/setting replay the video to the same ref. point, rinse and repeat.
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Old 12-22-2004, 07:42 AM
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m1abrams m1abrams is offline
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Ok no one has any suggestions.

Well would using ReClock help my situation?
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Old 12-22-2004, 08:03 AM
Lucas Lucas is offline
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I use reclock with ac3filter and Sonic Decoder with no problems.
I believe you should try reclock anyway.
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Old 12-22-2004, 06:34 PM
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m1abrams m1abrams is offline
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Posts: 445
Well tried ReClock and that seemed to fix my issues

What I find strange is that Reclock does fix it, because the videos with audio delay issues were ones where the audio decoder just did a passthru and reclock confirmed that. So Reclock could not adjust the timing on the spdif data. I guess it can still do tricks with the video side of things.

Anyhow it seems to be working now.
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