How do I strip audio and replace with other?

[lordanubis]

I encoded a movie of mine with dvdx 2.2 and divx 4.12 and when I finished I saw that the audio was full of problems in the first 10 minutes and in the last 10 minutes of the movie. I was wondering if there was a way to take out the bad audio with errors and then replace it with a different audio to the movie. And is there a way to encode just the audio of a movie so that I can do this? I wouldn't want to encode the video again because it would take too long. I imagine that just the audio would not be that long. Any help would be appreciated. Thanks for looking.

[jimmalenko]

I'm gathering you pulled it from a DVD ?

If so, demux just the audio stream using either DVDDecrypter or smartripper and convert to WAV, or even decode to WAV directly using DVD2AVI.

In VirtualDub, open your current AVI and go to Video > Direct Stream Copy. Go to Audio > Full Processing then go to Audio > WAV Audio. This should then allow you to specify the new WAV file as your audio. Go to Audio > Compression and set the compression that you want. Then go to File > Save as AVI.

[lordanubis]

Thanks for your reply. I did pull it from a dvd. The thing is that the dvd I got it from is damaged and does not play anymore so ripping it again directly from the dvd won't work. I do however have a big 300gb hard drive so the original files from when I first ripped it are still there. I ripped it with dvd decrypter in "File" Mode not "IFO" Mode. Can I still do what I want with just the files of the dvd on my hard drive using some program? Thanks.

[jimmalenko]

You can feed the files you have on your Hard Drive through smartripper and do what I said to do above.

[johns0]

Use vobedit to strip the audio,much easier and faster.

[jimmalenko]

Use vobedit to strip the audio,much easier and faster.

Only problem with VOBEdit is you can't differentiate between titles though.

[johns0]

Sure,just feed the first vob of the title.

[jimmalenko]

Have you ever seen DVDs that have all titles in VTS_01_1.VOB - VTS_01_7.VOB ?

[johns0]

If he needs the audio from the main movie and nothing else all he has to do is choose the the main vob set.

[jimmalenko]

That's exactly the point I'm trying to make. Not all DVDs have JUST one feature in a VOB set. I have seen some that have 6 titles, all in VTS_01.

Therefore you need to use something that can seperate the titles, like smartripper.

[johns0]

I have yet to see a vob set that contained more than just the main movie.

[jimmalenko]

OK

I can't expect you to know about something you haven't seen before. Trust me when I say it can happen and that it doesn't hurt to be aware of it.

Using smartripper gets around it because you pick up the title from the IFO.

Not to worry though...

[johns0]

Thanks for the tip ,ill keep my eye out for that,ive seen dvds where if you rip with smartripper it will skip the first 2 or 3 vobs due to the way the ifo file tells how to play the vobs,steven kings rose red is one such dvd that you dont rip with smartripper in ifo mode.The movie start with vob3 goes to vob5 and then finishes with vob 1&2.The second dvd of rose red is normal.

[jimmalenko]

Thanks for the tip ,ill keep my eye out for that,ive seen dvds where if you rip with smartripper it will skip the first 2 or 3 vobs due to the way the ifo file tells how to play the vobs,steven kings rose red is one such dvd that you dont rip with smartripper in ifo mode.The movie start with vob3 goes to vob5 and then finishes with vob 1&2.The second dvd of rose red is normal.

Bloody non standard DVDs !

I guess they've gotta find ways to test our expertise.

Does the jumping around affect demuxing the audio ?

I'm guessing that you'd have to demux the audio from each vob then join it in the same order ?

[johns0]

The trick was just to rename the vobs from vob4 to vob1 and rename vob1 to vob6 and vob2 to vob7 and vob 3 to vob 8 plus vob4 had to be spliced with vstrip because the movie starts at about 5 minutes towards the end of that vob,after the vobs were sorted out i then used dvd2svcd to encode without the ifo.This was before dvd burners were cheap enough.I thought it was vob 3 but if i remember right rose red starts with vob 4 of the main title set.

[jimmalenko]

The trick was just to rename the vobs from vob4 to vob1 and rename vob1 to vob6 and vob2 to vob7 and vob 3 to vob 8 plus vob4 had to be spliced with vstrip because the movie starts at about 5 minutes towards the end of that vob,after the vobs were sorted out i then used dvd2svcd to encode without the ifo.This was before dvd burners were cheap enough.I thought it was vob 3 but if i remember right rose red starts with vob 4 of the main title set.

Holy crap

Shouldn't (I'm not saying whether it does or doesn't) Smartripper (and/or DVDDecrypter for that matter) in IFO mode with stream processing traverse the VOBs in the correct order according to the IFO ?

[johns0]

With these types of movies its best just to shrink and burn in file mode,ifo ripping mode is just too much darn work Smartripper just couldn't rip all the vobs in ifo mode properly,it always left out the first 2 or 3 vobs.

[jimmalenko]

Interesting. I'll have to try it out some time.

[johns0]

One thing you have to know is the movie(Rose Red) is 4 hours and 14 minutes long on 2 dvds,besides The Stand(6 hours long) this was the hardest movie to back up.just hope lordanubis's audio is easier to replace.

[lordanubis]

Thanks again for the reply. I did as you said and demuxed just the audio file with smartripper and vobedit and tried to replace it into the defective one. But it didn't fix the movie. I noticed that the audio would be like 7 seconds ahead of the video and then at other points it would speed up to about 14 seconds and slow back down. I don't know what else I can do with that.

I was going to encode it again using dvdx 2.2 but right at the beginning it tells me that "Sample not found or audio decoding error. It happens sometimes at beginning or end of movie. Select continue will fill audio buffer with blank. Continue? Yes No?"

That is how I got the first audio problem that I tried to fix. I tried encoding the movie with Auto Gordian and that is where the audio is all out of sync at many different speeds. Is it possible that this movie can't be encoded? I am about ready to give up. Is there some other encoding method that I can try that never fails? Your help is very appreciated. Thanks.