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Friday 28.11.2025 / 14:37
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afterdawn.com > forums > archived forums > mpeg-1 and mpeg-2 encoding (avi to dvd) > troblems with audio delay
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troblems with audio delay
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tirofijo
Newbie
_ 		24. May 2005 @ 07:17 _ Link to this message    Send private message to this user   
having problems encoding avi to dvd....its an avi with ac3 sound. extracted the sound using virtualdub. use tmpegenc wizard. get m2v. use tmpegenc dvd author and when its all done, the sound is behind about 3 seconds. have tried adding a delay with dvdlab but i have had no luck....any help will be greatly appreciated.

thanks
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-LoNeR-
Senior Member
_ 		24. May 2005 @ 14:32 _ Link to this message    Send private message to this user   
how u encodin the video?

why u extractin audio first?

why u using TMPEG writer?
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tirofijo
Newbie
_ 		24. May 2005 @ 18:27 _ Link to this message    Send private message to this user   
going from AVI to dvd. i am extracting audio with VirtualDub first. save file as xxx.AC3. using tmpegenc to make m2v file (ntsc)..authoring dvd with tmpegenc dvd author....no luck yet...the AVI is PAL with AC3 sound.

thanks
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aldaco12
AfterDawn Addict
_ 		24. May 2005 @ 23:29 _ Link to this message    Send private message to this user   
Alas, in the DVDs the audio stream often has a constant delay with respect to the video. In the ripping .TXT info file you usually see something like:

- AC3 5.1 ch-english, delay = 386 ms

Usually you can fix this in the authoring application, telling it that 'the sound has a delay of 386 ms'.
Otherwise, if your authoring app doesn't allow you to do that, you'll need to convert those streams with a proper application (HeadAC3he or BeSweet allow you to set a constant 'delay' between the input end the output file) which allows you to delay your stream to set A/V to zero.
But I'm sure that a correct 'authoring' application allows you to have A/V in sync in a VOB video (or an ISO image containing that) using unsync Audio and Video streams. For example, ReJig allows that.
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This message has been edited since posting. Last time this message was edited on 24. May 2005 @ 23:35
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-LoNeR-
Senior Member
_ 		25. May 2005 @ 07:42 _ Link to this message    Send private message to this user   
i understood three quarters of that, lol

my suggestion? just encode the file without extractin audio, if u have your computer set up right and stuff - it will be fine
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