DGMPGDec 1.4.9 Final

[john3voltas]

I wonder whether third party encoding tools will be able to make use of this too?!
I've tried Aften inside BeHappy but I think I'm screwing up on something.
Can you try it on your end as well?
TIA
Cheers

[Guest]

The WAVs that I created with Demux Audio Only do not play and appear to be invalid.

[john3voltas]

I just ran a test.
I extracted an audio stream with "save project" (while the audio output was set to "decode ac3 to wav").
And then I extracted the same audio stream but this time using the "demux audio only" (again while the audio output was set to "decode ac3 to wav").
I got two 6-channels wav files with the exact same size.
Unfortunately I can't play any of them with foobar/mpc or even media player :(.
Does someone know a player that can play extended waves?
Then I compared both files MD5 hashes and SHA1 hashes.
Bummer! They don't match :(.
Exact same size, can't play any of them and the integrity hashes don't match...
Can somebody else run a quick test just to prove that it ain't my setup or hardware?
TIA
Cheers

[john3voltas]

The WAVs that I created with Demux Audio Only do not play and appear to be invalid.
Damn, you were quicker than me :lol:.
Anyway, can you play a decoded 6-channel wave extracted with the "save project"?
I can't either :?
Cheers

EDIT:
Ok, forget it.
You are right, I can play the decoded while saving project 6-channel wav but I can't play the demux audio only 6-channel wav.
But if their size is a perfect match I would bet that you could implement that in a flash.
Of course, when you are done with every other feature/bug that you are currently dealing with.
Thanks a lot.
Cheers

[SeeMoreDigital]

Yep... The same thing happens here...

But although the WAV created using the "Demux Audio Only" method does not play in MediaPlayer Classic and cant be read by GSpot. I was able to feed it into BeLight and generate a working 2Ch AAC, Lame etc encode from it ;)

However, I get the feeling the WAV file is 2Ch not 6Ch

[johnmeyer]

Using 1.4.9 Beta 7.

I decode track 1 to WAV and create d2v. Create the AVI file from d2v. Put resulting WAV and AVI files into Sony Vegas (I've done this in both version 6.0d and 7.0c).

I have now done this with exactly ten different DVDs. These DVDs were ripped using both DVD Decrypter and also, for some, DVD Shrink. I ripped using File mode, and ripped all files.

Problem:

1. During DGIndex decoding, I often get "audio error" message.

2. With 5.1 audio, the resulting WAV file is not the same length as the video (it is almost always shorter). I can time-stretch the audio, but it is not in sync. I have also demuxed to AC-3 and noted the offset, but even offsetting the audio by this amount and then stretching doesn't work.

3. The question, of course, is whether the WAV is the wrong length, the video is the wrong length, or both. I just tried another movie that is 1:35:54 in length, as reported when played in WinDVD. However, the AVI created from the d2v file is 1:36:00, and the WAV is 1:35:59. Thus neither is correct.

4. With two-channel audio, the program seems to work.

[Guest]

Try it again using IFO mode.

You don't need to time stretch the audio. You might need to offset it.

If you are getting audio errors then your stream is bad and that can cause sync problems. What happens if you decode the AC3 with an external decoder like BeSweet?

[johnmeyer]

--> Try it again using IFO mode.

I'll try that.

--> You don't need to time stretch the audio. You might need to offset it.

Nope. That doesn't work. I can sync at one point in the movie and then it is un-synced later (or earlier).

--> If you are getting audio errors then your stream is bad and that can cause sync problems.

Would I have a bad audio stream from ten different DVDs? I both rent and own DVDs and often put them on DVD+RW discs so I can return the DVD and view the movie at a later time, erasing the movie when I'm finished. As a result, I have temporarily backed up hundreds of movies. No problems at all. The reason I'm using this approach is that I want to do the same thing, except to iPod. If the disc has a 2-channel track, things work fine.

--> What happens if you decode the AC3 with an external decoder like BeSweet?

I'm going to try that in a moment. I just tried to demux to AC3 using this beta version, but it crashes immediately when I choose "demux audio only." If I save the project file, then it is OK. I'm doing that right now and the delay shown in the AC3 file name is 28ms which is about one frame. The audio sync problems are closer to one full second.

EDIT (added this a few minutes later)

OK, I did the IFO rip, and the audio is now exactly the correct length. The video, however, is still too long. Specifically the audio is 01:35:54.29 (the 29 at the end is the number of frames beyond 54 seconds), and the video is 01:36:00.14.

FURTHER EDIT

There are two huge glitches in the audio.

[Guest]

File mode ripping is fraught with peril due to multiangle stuff, etc.

The slight difference in lengths is not unusual. You should be able to sync them using a proper offset. It's all about PTS timestamps, but I haven't time to discuss it in detail.

I don't know why your audio is showing errors. Are you saying all your DVDs show audio errors?

This is stable code that hasn't been touched in a long time.

Again, try decoding the audio externally to see if there is any difference.

[johnmeyer]

--> I don't know why your audio is showing errors. Are you saying all your DVDs show audio errors?

With the old DVD2AVI I never got audio errors decoding to WAV. With DGIndex (including the 1.4.8 version), I seem to get it on some, but not all DVDs. I can't remember at the moment whether the errors only happen with 5.1 AC3 or whether they happen when decoding stereo as well.

The other error I referred to were brief glitches, which show up on the timeline in Sound Forge or Vegas as a 0dB impulse (i.e., full volume) of approximately 0.037 seconds in duration. This is pretty close to 1/23.976, which is the duration of one frame.

[Guest]

The AC3 decoding code in DGIndex is the same as the old DVD2AVI. Why don't you try the suspect stream with the old DVD2AVI?

[johnmeyer]

I don't want to take up any more of your time with this. You are nice to try to help, but since no one else is having problems, I am obviously doing something very wrong.

And I sure have tried a LOT of different things.

I just tried using the 1.4.9 Beta 7 version again, this time using the "Honor Flag" instead of "Force Film" for the video (to see if the resulting video length would match what is reported by both DVD Decrypter and WinDVD). After DGIndex was finished, I used VFAPIConv to create the AVI signpost from the D2V file (which is what I always do). However, the resulting video file is identical in length to what I got with forced film (i.e., it was about six seconds longer than it should be). However, with this approach, the decoded WAV file is only about half the length of the movie. It just truncates. Totally useless.

Since my goal in all of this is to create mp4 files for iPod, I'm just going to buy one of the "all in one" tools and do it that way. I will continue to use DGIndex (I've been using it for a long time, and DVD2AVI before it) in order to edit DVDs that I've created, using Vegas (which is totally brain-dead in dealing with MPEG-2 files, even in the latest 7.0c version). I also use Womble MPEG VCR for cuts-only editing (with no recompression), when I can do that.

Anyway, thanks for the help. If I do stumble across a way to make this work, I'll let you know.

[Guest]

VFAPI has been deprecated for a long time.

You must be doing something wrong because Honor Pulldown versus Force Film does not affect audio decoding/demuxing. If that is really happening, we should try to get to the bottom of it.

[johnmeyer]

--> VFAPI has been deprecated for a long time.

So what should I use instead to convert to AVI? Perhaps this is the reason why the video portion of the process is coming up with the wrong length. I just did another movie which, according to DVD Decrypter and WinDVD, is 2:03:41. This is 7,421 seconds. However, the length on the Vegas timeline is 2:03:48 which is 7,428 seconds. 7,428/7,421 = 1.00094 which is almost exactly 1.001. Thus, it looks like the movie is being converted to 24 fps instead of 23.976. Here's the header from the d2v file created by DGIndex 1.4.9 Beta 7:
DGIndexProjectFile14
4
L:\THE_NOTEBOOK_4X3\VIDEO_TS\VTS_01_1.VOB
L:\THE_NOTEBOOK_4X3\VIDEO_TS\VTS_01_2.VOB
L:\THE_NOTEBOOK_4X3\VIDEO_TS\VTS_01_3.VOB
L:\THE_NOTEBOOK_4X3\VIDEO_TS\VTS_01_4.VOB

Stream_Type=1
MPEG_Type=2
iDCT_Algorithm=6
YUVRGB_Scale=1
Luminance_Filter=0,0
Clipping=0,0,0,0
Aspect_Ratio=4:3
Picture_Size=720x480
Field_Operation=1
Frame_Rate=23976 (24000/1001)
Location=0,0,3,6D573
Thus, according to the header, it is 23.976, but the actual video seems to be timed for 24 fps (although it is reported at 23.976).

So, it looks like VFAPIConv might be the problem, eh? Let me know what I should use instead (as I mentioned above). I'll poke around right now and see if I can find the right thing on my own ...

[Edit - a few minutes later]

OK, I am confused (I confuse easily). I just read the DGIndex readme and it says:The procedure is as follows:

1. Place the files as described above.
2. Run DGIndex and verify that when you pull down
the Help menu the VFAPI Plugin item is checked.
You don't have to check it; it is checked automatically
if the files are placed in the right place. Generate your
D2V project file as usual.
3. Ensure that the VFAPI reader codec is installed.
4. Run the VFAPI Converter, select the D2V
file, and hit OK.
5. Hit Convert to create the "fake" AVI file.This is what I've been doing, so I don't know what you mean when you say VFAPI has been deprecated.

[Guest]

That is from the DGVfapi help file, not the DGIndex help file.

You should read the quick start guide included in the DGMPGDec package. The preferred path is via Avisynth, not via VFAPI.

[johnmeyer]

--> The preferred path is via Avisynth, not via VFAPI.

I use AVISynth almost every day. Unfortunately, Vegas cannot read AVS files (well, there is a VERY kludgy way via Debugmode's Wax plugin, but it doesn't always work). Vegas doesn't expose its codecs to other programs, so I can't use VirtualDub to read the AVS and then encode to MP4.

[johnmeyer]

OK, one last time. This time I tried to do everything by the book:

1. I rip the DVD ("The Notebook", a movie I own) using DVD Decrypter, in IFO mode.

2. I open the resulting VOB files in DGIndex 1.4.9 Beta 7.

3. I select "Forced Film" in the Video menu.

4. I select "Decode AC3 Track to WAV" and select Track 1 (no other tracks selected). Dynamic Range Control is Normal, Dolby Surround Downmix is Unchecked. 48->44.1 kHz is Off. Normalization is not checked. Track 1 is AC3 six channel (or 5.1, or 3:2, depending on what nomenclature you want to use).

5. Correct Field Order, Use Full Paths, and Use Directdraw Overlay are the only options checked (this is the default, I believe).

I then select Save Project [F4] and save to the d2v file. About ten minutes later I have a d2v and a WAV file.

I then follow the instructions in the readme file in the DGMPGDec package and create this AVISynth script:LoadPlugin("C:\Program Files\Video\dgdecode.dll")
mpeg2source("D:\Notebook_P.d2v")I open this in VirtualDub. In VirtualDub, I then select Audio->Wav Audio ... and select the WAV file created by DGIndex.

The movie plays and I get audio, but it is not synchronized.

So, I go to the beginning of the movie and use the "Delay Audio Track By" setting found under Audio -> Interleaving... to get the audio to be in sync. However, if I then go to any point later in the movie, the audio drifts further out of sync.

If I scroll to the end of the timeline in VirtualDub, the time at the end of the movie shows as 2:03:48, just like it did in Vegas, which is 7 seconds longer than the real length of the movie.

I spend about ten hours a day editing audio and video and most everything works as expected. Thus, while it is possible that my computer is messed up in some way, it sure isn't showing itself with other AVISynth plugins, VirtualDub plugins, Sound Forge, Vegas, or various Nero editing utilities.

Most likely it is cockpit error, which is why I provided such a detailed step-by-step description above. Hopefully someone will step forward to tell me I am an idiot, an epithet I will gladly accept if it will help me finally get this working.

[Guest]

That looks good.

I would like you to just demux the audio and then convert it with BeSweet. Everything else the same.

If it still does that and you are keen on solving it, I'll give you my address to snail mail an ISO copy of the DVD.

You might also try another ripper, like RipIt4Me.

[Guest]

Oh, you are not playing back the AVS to assess sync are you? You should do an encode and play that.

[johnmeyer]

--> Oh, you are not playing back the AVS to assess sync are you? You should do an encode and play that.

OK, I encoded ten seconds from the beginning, another ten from the middle, and ten more from near the end of the movie. The sync problems are identical to what I see/hear on the timeline in VirtualDub: Almost synced at the start, but then poorly synced in the middle, and then many seconds out of sync at the end.

I encoded using the MainConcept DV codec, a codec with which I have encoded literally hundreds of different projects over the past five years, and therefore whose idiosyncrasies I am know well.

[DSP8000]

Since my goal in all of this is to create mp4 files for iPod

There are so many ways how to create playable files for your iPod.
As neuron2 suggested, use besweet to do the transcoding for your audio.

Be carefull with the delay settings!!!
If you want you can try makeAVIS in ffdshow & see if that works in Vegas. You're not using the built in x264 encoder in Vegas, are you?

MeGUI will do an excellent job as well.
DVD-RB latest version adds support for mobile(iPod) usage based on ffmpeg. That may be your true one click solution.
Oh, & yes use RipIt4Me for cleaner DVD structure.

Hope this helps.
DSP8000

[SeeMoreDigital]

There are so many ways how to create playable files for your iPod.
As neuron2 suggested, use besweet to do the transcoding for your audio.Indeed...

You may want to look at AutoMKV (http://forum.doom9.org/showthread.php?t=113811)... It's a GUI that uses DGIndex, BeSweet, DelayCut and other apps to generate encodes with MPEG-4 (Part-2/Part10) video and AAC or MP3 audio into MP4 or MKV.

By-the-way, there's an audio application called BeLight (http://forum.doom9.org/showthread.php?t=85566) that can accept 6Ch AC3 streams and convert them into 6Ch AAC streams.... Without the user having to create a 6Ch WAV stream first!


Cheers

[Terranigma]

neuron2. Will you be adding this version over @ your homepage anytime soon? That's where I've been getting DGINDEX from. All This time I had no idea that there was a version 1.4.9 'til now. :)

[ultrabrutal]

I think there is something wrong with DGIndex's demuxing of AC3 tracks.

I have recorded several HD movies via sat running at 1920x1080i @ 25 fps. The TS files work fine and are in sync on PC.
I have tried both stable and beta7 of DGIndex and using the following AVS script:

LoadPlugin("DGDecode.dll")
LoadPlugin("Decomb.dll")
LoadPlugin("ColorMatrix.dll")
mpeg2source("<project>.d2v")
Telecide(guide=2,post=0)
BicubicResize(1280,544)
ColorMatrix(mode="Rec.709->Rec.601")

Using VirtualDubMod and muxing in the AC3 which was demuxed via DGIndex.
I encode to Xvid keeping the AC3 5.1 track intact.

When viewing the encode the movie plays at around three times the speed but audio is fine. Playback on Xbox freezed/goes crazy shortly after start.
When demuxing the AC3 from the encode and then adding it again, the duration of the AC3 is about one third of the movie length. This seems to be the cause of the fastforward playback.

mpeg2repair finds a shitload of problems with the TS.
AC3Fix finds a shitload of problems with the AC3.

When using the AC3Fix'ed AC3 when encoding the encode works fine initially. What happens then is at around 39:30 into the movie, the video fast forwards for about 1 second. Afterwards the audio is out of sync for the rest of the movie. This happens both with one and two passes.
The TS file does not have this problem at 39:30 and is in sync for the duration.

I have spent countless hours on getting this process to work. Now I will try to post here to see if anyone knows the problem or is capable of looking through any logs I can produce. Also willing to share the TS (14.7 gb) if anyone competent will have a look.

Tnx for the help and for a very cool application.

[ultrabrutal]

When demuxing the AC3 from the encode and then adding it again, the duration of the AC3 is about one third of the movie length. This seems to be the cause of the fastforward playback.


oh btw, when playing back the result of the remux the video plays at normal speed but ofcourse the audio stops about one third into the movie.

[jmac698]

I've had similar problems. I just use virtualdub and encode directly now.
Anyhow, neuron2, is it possible for dgindex to return the true 4:2:2 of the video?
I have a case where video is 4:2:2 which is upsized, then encoded to 4:2:0. It is also filmrate. In this case:

R=red, B=blue, M=magenta (red+blue), G=green
original frame, 4:2:2, diagram of 4lines each two pixels:
RR
BB
GG
BB
fields top, bottom:
RR BB
GG BB
4:2:0 of fields:
MM BB
MM BB
deinterlaced again:
MM
BB
MM
BB
Now we have a repeated top field, this is frame 2:
RR RR
GG GG
(an object is moving downwards in this case..)
and 4:2:0 version, frame 2:
MM MM
MM MM

ok that doesn't work... I thought there might be a way to subtract repeated fields to find a higher resolution, obviously upsampling can't be done here without motion estimation..

However, still one could take a >=2x height video, convert to yv12 (point interpolated), resize to 1x, and have proper yuy2 video recovered..

[G_M_C]

Hey neuron2, i've got a question:

I'trying to make a CD out of a Live-music DVD. The music DVD is authored so that every seperate chapter is 1 song. So in the end i hoped to use DGIndex to demux the AC3, but split up in segements relative to the chapter-number.

Is there a way to do this, or might this be a feature the would be interesting to implement ?

[TripleA]

If you use DVD Decrypter's IFO mode to rip the DVD, there is an option to split by chapter. Check under IFO in settings.

I believe even SmartRipper had a similar option, but it's been years since I last used it, may it R.I.P., so I could be mistaken.

[G_M_C]

If you use DVD Decrypter's IFO mode to rip the DVD, there is an option to split by chapter. Check under IFO in settings.

I believe even SmartRipper had a similar option, but it's been years since I last used it, may it R.I.P., so I could be mistaken.

Cool, thx for the tip. I'll give it a tryout this weekend, when i've got the time :)

[Isochroma]

Using both b3 and b7 on two different machines, with two different DVDs (one in a Daemon Tools drive, the other in an LG GSA-H22N, DGIndex closes with an error when using Demux Audio Only from selected DVD VOB files.

DGIndex terminates and on my friend's machine shows no error, while on mine, shows the Error signature window:

AppName: dgindex.exe
AppVer: 1.4.9.7
ModName: ntdll.dll
ModVer: 5.1.2600.2180
Offset: 00001010

In Event Viewer, the Application log contains an error with source DrWatson:

The application, C:\Program Files\AviSynth 2.5\plugins\DGIndex.exe, generated an application error The error occurred on 12/20/2006 @ 17:17:38.890 The exception generated was c0000005 at address 7C901010 (ntdll!RtlEnterCriticalSection)

Using Save Project, the audio is successfully demuxed on both machines; however...

The demuxed audio plays with abnormally high CPU usage in MPC using both MPC's internal decoder and ffdshow's. Also, the soundtrack has clicks every second or so.

Using SmartRipper 2.41, the same track was demuxed successfully and found to contain no clicks.

[Guest]

Please try it with 1.4.8 and report results.

>my friend's machine shows no error

You're saying everything works fine on that machine?

If you can upload a VOB fragment that shows the problem, that will be best for me to investigate it.

[Tima]

Hi!

I have one vob located in "F:\0\From_sxe\Кооператив Ништяк - Концерт в Тюмени + Иногда они возвращаются\" :) After saving project into the folder "E:\DVD\Pr.sxe_kn_tyumen\" I get files with exactly this content:

project.d2v:
DGIndexProjectFile13
1
F:\0\From_sxe\Кооператив Ништ

project.d2v.bad:
DGIndexProjectFile13
1
F:\0\From_sxe\Кооператив Ништ

project.fix.txt:
D2V Fix Output

Field order transition: 2 -> 0
d00 1 0 1054365696 1 1 92 a2 a2 a2 a2 a2 a2 a2 a2 a2
d00 1 0 1054593024 1 1 90 b0 b0 a0 b0 b0 a0 b0 b0 a0 b0 b0 a0
corrected...
d00 1 0 1054365696 1 1 92 a2 a2 a2 a2 a2 a2 a2 a2 a3
d00 1 0 1054593024 1 1 90 b0 b0 a0 b0 b0 a0 b0 b0 a0 b0 b0 a0


Obviously project.d2v and project.d2v.bad are incomplete :)

[Guest]

Maybe it's that funny russian text. Can you try with 'normal' text as used in the first part of the path?

[Tima]

Of course, when moving source to "F:\0\From_sxe\kn\", everything is fine. I thing DGIndex just can't properly handle long paths with russian symbols..

Are there any additional tests required?

[Guest]

Of course, when moving source to "F:\0\From_sxe\kn\", everything is fine. I thing DGIndex just can't properly handle long paths with russian symbols..

Are there any additional tests required? I don't know how to fix it because I can't type that funny stuff.

[Tima]

Well, If copy&paste is not a solution, then there's a rar file with empty dir with this name.. ;)

[Isochroma]

Using b7 to demux a 5.1-channel AC3 (single stream) from a .TS, with the audio output method set to "Decode AC3 Track to WAV", the resultant WAV file is 2-channel only. Note that Dolby Surround Downmix was unchecked.

[Guest]

From the DGIndex manual:

"Dolby Surround Downmix AC3 supports up to 6 channels but when decoding to WAV only 2 channels (left and right stereo) can be output, so a process of downmixing is applied. This option selects which of two possible methods for downmixing is to be used."

[Guest]

Well, If copy&paste is not a solution, then there's a rar file with empty dir with this name.. ;) Sorry, but I have no plans to implement Unicode support.

[Tima]

Sorry, but I have no plans to implement Unicode support.

[Is it necessary to implement Unicode in DGIndex for just cyrillic symbols?]

Nevertheless, I have good news on this issue. :)

When creating d2v file (before correcting it!), it treats all paths ok, and produces a valid d2v (I looked at d2v at the middle of the process). But when DGIndex makes corrections, it stops writing new d2v at the first symbol 'я'. Tried with different dirs.
So there's no global Unicode problem, but just an incorrect handling of symbols when correcting fields order.

[Tima]

So, what's with this bug? :) Did you can reproduce it?

[Guest]

Sorry, it's Christmas Eve. But don't worry, I'll just drop all my holiday plans so I can get right on this for you. :devil:

[Carpo]

such a nice dev inst he to drop everything to help :sly: :)

[Tima]

Sorry, it's Christmas Eve. But don't worry, I'll just drop all my holiday plans so I can get right on this for you. :devil:

Oops, sorry.. in Russia we prefer NY, and I forgot about Christmas! :eek:

Merry Christmas and happy holidays! =)

[went away to congratulate people around :)]

[BitBasher]

The WAVs that I created with Demux Audio Only do not play and appear to be invalid.

Same for me. If it's not working for you either, is this option not functioning correctly? I have yet to get a "good" wave file from the Demux Audio Only option. There may be a program that can read the resulting .WAV file, but the apps I tried (virtualdub, WMP, cdex, etc) all complain the file is invalid.

I'm wondering if this option perhaps isn't writing the RIFF header or something simple like that.

Bit.

[Guest]

The Demux Audio Only function was designed for demuxing, not decoding. The Audio/Output Method *must not* be set to Decode. I'll add an error popup to prevent the user from trying to decode with this feature.

[jmac698]

I used demux audio only, and save project. The resulting .ac3 were different lengths, by several seconds. I tried decode, and it truncated the file while saying "audio error". Which is the right file?

[Isochroma]

I just noticed a previous post, and wanted to say that WAV supports 6-channels, so it is possible to output 5.1 in WAV format. I've made 5.1 WAVs with BeSweet before, and they play just fine.

[G_M_C]

I am trying to process a source that is supposed to be a 1080i .TS source through the latest beta, but the preview leaves me in doubt.

It looks like the preview-field isnt exactly shure it's interlaced or not; The indicator keeps switching between interlaced/progressive. During this time the FILM-oercentage is slowly lowering; It started with 100% film, but the percentage is slowly gowing down. And to top this off, the frame structure remains at "FRAME" all the time, even when the indicator sais its interlaced.

My guess is that the indicator hovers between approx. 80% progressive / 20% interlaced in some places and 90 / 10 in others, and approx 75% FILM.

What settings do i use now ?

For the preview i used a 1 hour long piece right in the middle of the .TS.

My guess:
The bitrate is approx 15 mbps MPeg2, the framerate is 29,970030 and since i know it was capped from sattelite; My guess is that its ínterlaced NTSC.

[Guest]

I used demux audio only, and save project. The resulting .ac3 were different lengths, by several seconds. I tried decode, and it truncated the file while saying "audio error". Which is the right file? If there is video in the source, use Save Project. Demux audio only is intended only for sources without video.

I clearly stated several times to not use Demux Audio Only with Decode AC3.