Replacing DTS audio and reauthoring.

[Gatts79]

Sorry for the late reply, works been a pain.

Anyway that sounds like a good plan. I was trying to do video with dvd decrypter, but it would break up the video file in 1 gig incriments; so I will try vobedit out. I believe it is the video myself. I took your earlier advice and made another *.ac3 file useing a differnt set of programs and tested it with ac3fix and it also checked out no problems.

You have been a great help and I will post my findings useing vobedit. Thanks in advance.

[Gatts79]

Update:

I have tried muxing only the video and I do get the excessive bitrate error on muxman. I have tested this with the PgcDemux video file i created and with the vobedit video file i created. Both files get the same errors on muxman.

So it looks like it is the video that continue's to get the errors. I am wondering If i should run the video through TmpegEnc to rectify this problem. Of course if everyone else has tried this method and are not having problems; it makes me wonder why I'm such the lucky one?...

Anymore suggestions would be great. I'm guessing we isolated my problem and it's the video; or possibly its a deeper problem and the video is fine? I'm actually wondering if it may be a codec issue to begin with? Any thoughts on that?

Thanks In Advance.

[manono]

Curiouser and curiouser. Yes, you've isolated the problem to the video. But VobEdit was supposed to give you a good M2V. I had a similar problem once when demuxing an M2V using DGIndex. I tried to author with it, and got the error. I thought at the time it was a problem confined to DGIndex, but now I don't think it was. Seems to be a problem with a lot of M2Vs, no matter how they are demuxed.

Not really knowing what I was doing at the time, I then ran that M2V through Pulldown again. For reasons I don't quite understand, it then authored with no problem. So, if you have Pulldown.exe with a GUI, run one of your M2Vs through it. Or use DGPulldown with the default 23.976->29.97 (I always uncheck the 2 boxes that come already checked). Then try and author just the M2V again. No guarantees, though.

It just seems a shame to have to reencode it to get it to author properly. I hope it doesn't come to that.

it makes me wonder why I'm such the lucky one?...

Everyone else is reencoding the video.

[Gatts79]

Update:

I rencoded the video with DGPulldown and that fixed the muxing problem (HELL YEAH!!). Of course now that I can mux it all together with muxman; I've run into yet another problem... the audio is very much out of sync.

Now the audio and the subpicture sync just fine from what I can tell. They just don't sync with the video. I am wondering if this has anything to do with converting the DTS to AC3? Strange thing is the begining audio from what I can tell syncs just fine I think. I'll check again to be sure.

Any thoughts on this dilema? Thanks again for all your help manono.

[manono]

So near yet so far.

I don't use the same programs you used to create the AC3, so I don't know if the length changed along the way. Since the subs seem to synch with the audio, it seems that the audio is OK.

First you need to figure out if the audio is off by the same amount all the way through. If so, you can adjust the delay to get it back in synch. If the asynch gets worse as it goes along, or perhaps jumps off at a certain place, then you have problems.

And this is an NTSC video, right (as opposed to PAL)? And it's originally film, right, like a movie? If it's native 29.97fps, then that will easily explain it. If this thing is supposed to be 29.97fps native, then I was wrong about the DGPulldown settings. You'll have to redo it with "No Change" ticked and the 2 boxes unchecked. What kind of a video is it? Actually, if it's an interlaced video, you shouldn't use DGIndex at all.

[Gatts79]

The video itself is from a NTSC5 retail Hong Kong DVD with DTS sound. I used DVD decryptor to rip the files to HD and did all the conversions from the HD files. Used DGCDemux to demux the vob file. Used Transcode and Besweet to creat the AC3 from DTS. Used DGPulldown to redo my video as per suggested.

As I said the audio and subpicture sync exactly. It would seem I would need a delay in audio to fix the video audio sync, but i would think everything would have been synced to begin with. I will try changing the DGPulldown settings as per suggested. I see there is a delay option when muxing in muxman for audio. I wonder if that will help, but as u pointed out that if the sync is off progressively then it will not be of help. I will test and post, thanks bro.

[manono]

OK, a Hong Kong DVD. Probably non-progressive and my DGPulldown instructions were for progressive 23.976fps sources. You can't use DGPulldown for the job as it sets the progressive frame flag and you have a 29.97fps interlaced source most likely. Just as a test, open one of the vobs in DGIndex and go File->Preview. In the new window that opens up on the right, it'll probably say Video/Interlaced. You'll need Pulldown.exe, and GUI Pulldown:

http://www.digital-digest.com/dvd/downloads/showsoftware_pulldown_gui_248.html

After you get it set up, open the M2V in it and tick Each Frame->Interlaced, and check the "No Pulldown" box. Leave the rest alone. Then hit "Go". Now, with any luck, the new M2V can be authored OK. Sorry about my assuming you had a progressive source.

[Gatts79]

Thinking that it was the audio being out of sync I began delaying the audio useing muxman, but that was alot more difficult than it seems and after 10 or so muxes with delay in audio I gave up.

I didn't really put any thought in it being the video source. But now that you mention it, maybe that is why the earlier video demuxes wouldn't mux properly?? I will try Pulldown instead of the DPG and see what happens. I'll post what transpires upon completion.

Thanks again for your wisdom and continued help

[manono]

Yeah, the vast majority of the DVDs I've seen out of Hong Kong have used obsolete or cheap encoders and have used an already telecined 29.97fps source, and kept it that way. No IVTC, and no 23.976fps progressive with pulldown. On many progressive displays such as computer monitors and HDTVs, depending on the DVD player used, they look like crap as they just get deinterlaced. I usually reencode the damn things myself. They'll play fine on standard interlaced CRT TV sets, except for the wasted bits/compromised quality because of encoding it as 29.97fps. If it's a DVD5 and has a DTS track, this thing may not look so good to begin with.

[Gatts79]

Update:

Alot more curious things are happening. Might want to take a seat and take a deep breath before reading onwared...

I used Pulldown.exe with GUI as per suggested with the settings you noted. Unfortunately the video I get won't mux with muxman. I am now again getting the error of dropped frames / excessive bitrates. Now I played around with the options and did the interlace option to the frames, but left out the 2:3 pulldown. It is muxing at the moment just fun, but who's to say the audio will not be out of sync like last time. As soon as the mux is done and i can test the file (should be a few minutes) I'll post the results (crosses fingers).

[Gatts79]

Findings:

So it would seem the video will not mux in muxman if i do not have pulldown on. If I redo the video useing pulldown with the said options clicked i get a video file but it does exactly what the original files where doing... dropping frames when muxing and getting the excesive bitrate error on muxman.

I'm pondering how the video will turn out if i recode using TmpegEnc... Never really failed me before when making complient video, but just so damn long to compile. Not even close to the speed as these programs I've been useing thus far.

So I'm wondering what the best route is now? Redo the video so the audio syncs? or find another way to redo audio to resync to video. From just testing and listening and reading the digital readout of seconds on teh film with out of sync audio; it would seem that the movie starts off about 6+ seconds off sync and then ends up about 1 minute off sync after 10 mins in... just my guestimate.

What are your 2 cents on the subject?

[manono]

Hi-

So it would seem the video will not mux in muxman if i do not have pulldown on.

I've done a bunch of interlaced MPVs with those settings, and they all muxed just fine. However, mine had been reencoded. I found something else to try. A friend was having a similar problem today, and fixed it with FixVTS. You'll have to run it on the original DVD files (the whole DVD or just the VTS containing the movie) on the hard drive, and then Demux with PGCDemux. Then try and author.

If that doesn't work, then I'm just about out of ideas. I sure wish I had this DVD on my hard drive so I could play around with it. Yes, you may wind up reencoding it. By doing that though, you can IVTC it back to being progressive, if that's what it was originally.