dvd to divx sinc issue

[freddyfartbox]

now i know this subject has been discussed on this forum countless times, but i need help.i have ripped vob to divx5 with drdivx and a audio sinc issue arises over half way through and progressively gets worse.audio is ac3 192kbps 48000mhz. bitrate 1304 , fps 25.i have looked at vdubmod but i have no idea what im doing.im a newb at encoding.is it possible to fix sinc issues when the video and audio are ripped in one process.:confused:

[jokiin]

Suggest as a starting point you search the forums for posts by davidf he is perhaps the most knowledgeable on this subject and has posted plenty of good info previously. I'm sure if you get stuck beyond the advice he has already posted he would be able to offer some pointers.

[davidf]

now i know this subject has been discussed on this forum countless times, but i need help.i have ripped vob to divx5 with drdivx and a audio sinc issue arises over half way through and progressively gets worse.audio is ac3 192kbps 48000mhz. bitrate 1304 , fps 25.i have looked at vdubmod but i have no idea what im doing.im a newb at encoding.is it possible to fix sinc issues when the video and audio are ripped in one process.:confused:


http://phorums.tk/showthread.php?t=126363

Read thru this thread it should help you...

One problem you may have is the ac3, if it only ac3 2.1 then 192k sample rate is fine, if the audio is ac3 5.1 then you may have to do considerable work to get things right as the sample rate is way to low for 5.1 channel audio(hard to explain but has to do with the way decoders percieve the time required to decode and line up a/v frames).

If you have the original vob it may be worth while redoing the encode with something a little more compromising than DrDivx.

[freddyfartbox]

http://phorums.tk/showthread.php?t=126363

Read thru this thread it should help you...

One problem you may have is the ac3, if it only ac3 2.1 then 192k sample rate is fine, if the audio is ac3 5.1 then you may have to do considerable work to get things right as the sample rate is way to low for 5.1 channel audio(hard to explain but has to do with the way decoders percieve the time required to decode and line up a/v frames).

If you have the original vob it may be worth while redoing the encode with something a little more compromising than DrDivx.

origrnal audio is 2.0 ac3 so i kept that.i used gknot but aspect was all fucked,prob somethin i did or didnt do.put avi file thru avimux but then what.just created a c.c of original. dvd i ripped was ******** s01 with bout 5 eps. could the fact its 5 eps. instead of 1 whole movie cause this problem even tho the vobs were in sequqntial order? this is giving me a headache. and ive only just started.

[davidf]

origrnal audio is 2.0 ac3 so i kept that.i used gknot but aspect was all f***ed,prob somethin i did or didnt do.put avi file thru avimux but then what.just created a c.c of original. dvd i ripped was ******** s01 with bout 5 eps. could the fact its 5 eps. instead of 1 whole movie cause this problem even tho the vobs were in sequqntial order? this is giving me a headache. and ive only just started.

Ok , rule 1 don't mention titles...!!!!

Now lets say we were backing up a dvd with multiple titles the first thing we need to do is rip each title individually or if all the 'episodes' are referenced as one big title then we need to rip that as a movie.

Now the fun, when episodes are not separated into individual titles more often than not you will find that although the vob sequence is standard i.e. vts_01_1...vts_01_8 the episodes are not sequential in the vob set. You still need to create the 'movie' then once the encoding and muxing is done you need to use nandub or virtualdubmod > 1.5 to separate the episodes into individual avi's.

It seems to me that you would be better of starting from scratch, so you need to get a few things ready first

http://nic.dnsalias.com/XviD_Install.exe

http://nic.dnsalias.com/DVD2AVI_NIC.exe

http://voxel.dl.sourceforge.net/sourceforge/avisynth2/AviSynth_100705.exe

http://www-user.tu-chemnitz.de/~noe/Video-Zeug/AVIMux%20GUI/AVI-Mux_GUI-1.17.zip

http://www.moitah.net/download/latest/MPEG4Modifier.zip

http://ac3filter.sourceforge.net/test/ac3filter_1_02a_test8.exe

the following is ffdshow -
http://www.free-codecs.com/download_soft.php?d=921&s=50

With this set of tools you will find that you have a much higher success rate when encoding than most other offerings. Nic's DVD2avi includes dgdecode for mpeg2 frame serving and also nandub for working with avi video and audio.

Set all these tools up and have a play with dvd2avi to get an idea of how it works, I was working on a help file for the dvd2avi app but I'm working on my own app which is very similar so have not had time yet.

PS: Jokiin or Andw could you set up a sticky for A/V tools where links and simple guides could be kept.

[jokiin]

PS: Jokiin or Andw could you set up a sticky for A/V tools where links and simple guides could be kept.

Quite happy to set something up for you if you would like to put some stuff together, you seem to be emerging as our resident encoding expert;)

[Jason_SSS]

freddy: as someone who likes to take the complication out of encoding I would suggest AUTOGK - there are less options to choose from but the end result is fantastic. You pop in your decrypted dvd files to the selected dir, choose from divx or xvid, choose how big you want the file and there are choices of mp3 or ac3. the best thing is after that your job is done, come back in 2 or so hours and you have a fantastic encode of the movie you have on dvd.

You can get it here http://www.free-codecs.com/AutoGK_download.htm

[andw]

Quite happy to set something up for you if you would like to put some stuff together, you seem to be emerging as our resident encoding expert;)
He certainly is!!
I pinned a topic a while back that started out as just a Divx Test CD thread, but then tools started to get put in it...
Anyway, to cut a long story short, I've renamed the thread to "Mpeg4 Test CDs and Tools", and it is pinned at the top, so feel free to add to it with various tools and a brief description... http://phorums.tk/showthread.php?t=116421

[freddyfartbox]

well i guess i will start again.i thought ripping each vob individually may help so i will try that.im sure to need more help at some stage so ill post here with any more issues.thanx for the links.i'm such a noob.:dD

[freddyfartbox]

davidf, the mpeg4modifier.exe from that link wont launch, so you know. also have a problem trying to delete an avi ripped with drdivx. says cant delete, is being used.i've already deleted the log, could this be the cause.:o

[andw]

davidf, the mpeg4modifier.exe from that link wont launch, so you know. also have a problem trying to delete an avi ripped with drdivx. says cant delete, is being used.i've already deleted the log, could this be the cause.:o
mpeg4modifier requires .NET
The other error is sometimes caused by XP...
from http://www.techfreaks.org/articles/faq.shtml
Why won't this .avi file delete?
This is a common problem among Windows XP users; I even experienced it. You're trying to delete an .avi file (usually one huge in size), but Windows displays the error that the file is in use. You reboot to no avail, the .avi file won't go away. Today, a solution.


*please note that editing your registry is dangerous and TechFreaks takes no responsibility for anything you do within your registry.*

1. Start -> Run regedit
2. Navigate to:


HKEY_LOCAL_MACHINE \ SOFTWARE \ Classes \ CLSID \ {87D62D94-71B3-4b9a-9489-5FE6850DC73E}

3. Delete the InProcServer32 key
4. Reboot

Now, you should be able to delete the .avi file. The reason it wouldn't delete before is that Windows tries to read the corrupt .avi file before allowing you to delete it. The removal of the InProcServer32 prevents Windows from reading the files before you play/edit/delete them.


also, another fix http://www.pcmag.com/article2/0,1895,1206400,00.asp

[freddyfartbox]

cheers andw that got rid of it. i ripped the first of 5 vob's with drdivx again but still ended up with the same sinc problem. would this mean autogk will have the same issue?

[andw]

I know there are people that don't like the "all in one" solutions, but when I do one, I use DVDx http://dvdx.sourceforge.net/
It gives you quite a bit of control (although no AC3 on the version I'm using -2.2) over all the encoding parameters, including bitrates, cropping etc.

[freddyfartbox]

am ripping 1 vob with autogk atm.if that doesnt work ill try suggested software.

[freddyfartbox]

used autogk resulting in same sinc problem, plus crap picture.im guessing then that this has more to do with the source file than output settings or such.i really dont understand this process anywhere near enough to not use all in one programs, but im sure i will with experience.will try dvdx and see what happens.

[Jason_SSS]

sorry to hear that freddy

are you working off a ratio of every 45 mins should be 350mb of video and audio or something similar? - to rule out lack of file size.

[freddyfartbox]

correct.strangely the sinc is out whether i rip all 5 vob's at once or 1 at a time.easily corrected though im told.

[jokiin]

By any chance are you converting PAL frame rates to NTSC or vice versa? In other words are you keeping the same frame rates as the source for the output (assuming the program you are using has this option of course) I recall getting caught out with something similar a while ago as most of these programs are designed with NTSC users in mind and the PAL material that I was converting would not come out correctly, some hidden setting sorted it out but it had me stumped at the time. I don't do a lot of encoding anyway so I may be way off the mark:eek: might not be related to your problem at all but no harm in checking:p

[freddyfartbox]

actually i didnt check that. i dont have the original dvd's on hand anymore but i would assume being region4 its pal.

[davidf]

actually i didnt check that. i dont have the original dvd's on hand anymore but i would assume being region4 its pal.

If you want to play with my very experimental avi creator let me know and i'll give you a link, its specifically for pal stuff so as long as you have the vobs even if they are encrypted/macro-visioned there shouldn't be a problem.