Nandub And Audio

[REIGN_]

nandub doesn't mix my video with audio correct! i use lame to make vbr mp3 audio but i doesn't seem to work with :( nandub

[cofferscuffs]

Do you mean the sync is off, or you get no sound at all? Please post more info than this.

[REIGN_]

look i do everything correct only when i try to view it it messes up with the audio! i hear for 1-2 secinds everything correctly and then hell! i goes back and forward all the time and i cannot make out anything!

[manono]

When you play the MP3 by itself (like in WinAmp or something), it's OK? Are you using the default interleaving settings? Are you loading the audio into Nandub with the (VBR)MP3 Audio selection? Just checking.

[REIGN_]

now i tried a new movie and in the begining it delays the audio almost 4 seconds and then in the middle 8 and inthe end almost 18 what is going on? the interleave options are 500ms proload every1 frame and delay 0 ms

[REIGN_]

the vbr audio works perfectly but i always have problems with the audio
by the way what is a bemuxer?

[Pikoa]

Sounds like you have a stretched audio. Go to web address below to address the issue

http://168.144.91.167/nickyguides/audio-synch.htm

Just wondering... did you use DVD2AVI to extract the sound? Audio synch is somewhat rare with DVD2AVI. Good luck...:)

[REIGN_]

i use dvd2avi for the video but not for the audio! i use be sweet for the audio:)

[Pikoa]

What I've meant was did you extract the ac3 file from DVD2AVI? DVD2AVI is a nice ac3 (Dolby digital) extraction tool as it will also calculate the phase difference for you (lag or gain in ms). In case you have not used it before, here's the procedure for extraction with DVD2AVI

1. Select track [Audio -> Track Number]. This information is available in the "vts_01_INFO.txt" file generated by smartripper. It will indicate which track is English, French, etc.

2. Select format [Audio -> Channel Format -> Auto select]. Let DVD2AVI figure it out or you can select "Dolby Digital"

3. Select DeMux mode [Audio -> Dolby Digital -> Demux or Demux all tracks]. "Demux" will only extract ac3 data from tracks selected in item 1. "Demux all" will extract all available ac3 data in source file. "Demux all" will take slighly longer.

4. Process the extracted ac3 file in BeSweet, Azid, or you favourite downmixer. Don't forget to halve the subwoofer channel (LFE -3db) if the source is 5.1 channel (*3_2c.ac3).

Note: Bear in mind that audio data are matched to a particular DVD2AVI file. So in order to play it safe, do not mix and match ac3 data from different DVD2AVI files. Update this post and let me know how things turned out for you.

Pikoa :)

[REIGN_]

ok thanks i will do it to day and i will post again tommorow or even today!i think this will work! but do i have to extract the video again? smart ripper has already done this for me:)

[Pikoa]

No, you can use the existing VOB (Video Object) file extracted by smartripper. You just need to regenerate a new d2v file (DVD2AVI) along with the desired ac3 track. If you're lucky, the newly extracted ac3 file MAY be in synch with your old avi file (After downmixing to Wav of course). If they're not, it may be a good idea to re-encode the source again using the new d2v file (I hate synching audio to video manually, very tiring to look at lips for 30-60 minutes). Good luck!!

Pikoa :)

[krasschen]

I just finished my first completed attempt at Nandub/SBC. My first finished AVI had the EXACT same problem you're refering to...the movie starts out syncronized but after a minute in, it's out-of-sync, specifically, the Audio lags behind the Video (You SEE it then you HEAR it?), plus, the longer the movie went on the more out it was out-of-sync. I noticed that my finished AVI had a length of 1:39:11, but, when I opened up my MP3 soundtrack it was 1:39:17...? I decided to trust the Length of the my MP3 Soundtrack, since I've been using the same methods sucessfully for some time (I'm not new to DivX, just Nandub). So, I opened up the Dummy AVI file that VFAPI made and sure enough, it was 1:39:11. Hmmm, what could have changed the Length of the movie? "Force FILM"....I used DVD2AVI's Force FILM setting to do IVTC in the Movie. To Test this Theory, I saved another project without the Force FILM setting and checked its length in Nandub...1:39:17. I went back and re-encoded the movie with DVD2AVI's Force FILM setting disabled (using a combination of Nandub's deinterlace filter and Smart Smoother plug-in instead) and my movie was the correct length (1:39:17). I had no Sync issues with my VBR MP3 soundtrack. Hope this helps.