Avi (not Mpeg) Sync Problem

[n1koolkat]

I have downloaded a 1.3Gb avi film (with ac3 audio) which originally was dowloaded as 2, 700+Mb CDs. I joined both together with nandud and recoded the 1.3Gb file with the same parameters but a smaller bitrate using virtual dub so that it can fit on to a single 80min CD. I have succeeded and the quality of the new smaller file is not noticeably different from the original. There is however a problem in that the new avi file is now slightly out of sync by about 2 secs. Even when i tried converting the 1.3Gb file, it was also out of sync by 2 secs. (Meanwhile both the video and the extracted wav file are exactly the same size)

I read in the forum that it can be done from within Sonic Foundry's Vegas Video but when i saw how complicated the application looked, i bauked!

Is there any other way of amending the sync problem within the avi file rather than converting to mpg and trying to amend the problem from there? Any help would be appreciated :o

[Tommyknocker]

Why not load the AVI file into TMPGEnc, select Setting-->Advanced tab-->
Source Range. Adjust the Audio gap to the value you need, select OK. Select File-->Output to File-->AVI File. Select your format, new file name.

[0 kewl]

Why not load the AVI file into TMPGEnc, select Setting-->Advanced tab-->
Source Range. Adjust the Audio gap to the value you need, select OK. Select File-->Output to File-->AVI File. Select your format, new file name.

n1koolkat,

Just in case you've never used TMPGEnc before - you'll have to double click on Source Range to open up Source Range Window for adjusting your audio.

[DRfrankenpimp]

load the avi into virtual dub,select direct stream copy...select frame rate...select audio video duration match...resave your avi see if it's in sync...if not select audio...interleaving...audio skew and try a number like 300 or 500 ms delay,i have a sycronizer program that does both if this does not work i will send you the file

[easydvd]

can I have that file too, please

[n1koolkat]

:D Thanks for the posting. I've never actually used Tmpgenc for anything other than straight conversion to mpg. I'll give it a go and let you know how it went.

[n1koolkat]

Thanks DRfrankenpimp, it worked perfectly ad i learnt something new as well. I would'nt mind having a copy of the synchroniser program though. especially if it gives some idea of the actual time difference between audio and video.