My investigations into audio sync issue

[AzDragonLord]

At least they are working on it....unlike SnapStream with BeyondTV!

[DVDFabUser56]

The last time I looked at this thread, it had been closed, now its opened again. Anyway, I sent a PM to Fengtao yesterday and this was his reply:
Yes, we are closer, new sync engine works great.

I did ask how much longer it will take until its released but he didn't say, I am still frustrated though since I have been waiting ages for these audio sync problems to be resolved but hopefully we won't have to wait much longer.

[wapitikev]

Hi all, I too have been also been having sync issues when ripping my Bluray Disc to .MKV files, resulting in a -.7 audio sync issue. It's not exactly a full solution, but is a temporary fix I suppose. I have used the program mkvmerge to remux the video and audio files together with correct timings for audio delay. When you load the program, you must add your source file to the program by clicking add in the top right of the program, then under the Tracks, chapters and tags select the audio track. Next, select the Format specific options tab and where you see "Delay" enter the value -700. Then hit the start muxing button at the bottom and let it run. It should take terribly long.

Hi, Jefferson:
I had a 250ms lip-lag on an AVI that I encoded from Blu-Ray (Batman Begins) but when I encoded it on a different PC (and changed from AVI to MKV), that lag went away. I suspect it was the machine switch and not the format switch that solved my problem.

The gnarly problem that we cannot fix is when lip-lag starts at 0ms, at the beginning of the file, and falls progressively out of sync as the movie goes on, to the point where the audio is sometimes 4 or 5 seconds off by the end of the movie.

So far "same as source" and "split by chapter" is the only way I've found to fix the problem. However, this leaves you with 20 or so separate MKV files per movie instead of only one.

Also, I've had trouble finding a joiner program that works well with mkv files. The one recommended to me (elsewhere) tints them green. Wolfman just doesn't have the same effect with green blood flying around.

I'm trying some AVI encodes using those same settings (so my joiner software works)...I'll post back with my results.

-Wapitikev

[jefferson136]

Temporary Fix

Hi all, I too have been also been having sync issues when ripping my Bluray Disc to .MKV files, resulting in a -.7 audio sync issue. It's not exactly a full solution, but is a temporary fix I suppose. I have used the program mkvmerge to remux the video and audio files together with correct timings for audio delay. When you load the program, you must add your source file to the program by clicking add in the top right of the program, then under the Tracks, chapters and tags select the audio track. Next, select the Format specific options tab and where you see "Delay" enter the value -700. Then hit the start muxing button at the bottom and let it run. It should take terribly long.

[midiwall]

What do you mean "Thanks to the team for fixing the error" The error has not been fixed that I know of.

English is not his native language... The English language is full of idiosyncrasies when it comes to verb tense and noun/adjective relationships. He means to pass along thanks for the future fixing of the error.

[southerndude]

Sorry I don't Understand?

A warm "hallo" to all the forumer.
I'm fighting with the same problem since 1 month. I'm sure the problem is in the framerate modification. Now under test there is an italian movie, genitori e figli (it meanS parents and children), the original BD has been ripped on my hdd and then remuxed in mkv format.There are 2 different mkv files, the first one has been created by dvdfab, the second one by another common sw.
Dvdfab changes the framerate and the audio goes out of synch, the other one does nothingelse that remuxing.
Hereafter there are the analysis performed on source, targe1 and target2 by mediainfo.

Thanks to the team for fixing the error.

SOURCE
General
ID : 0
Complete name : J:\GENITORI_E_FIGLI BD\BDMV\STREAM\00016.m2ts
Format : BDAV
Format/Info : Blu-ray Video
File size : 20.5 GiB
Duration : 1h 49mn
Overall bit rate : 26.7 Mbps
Maximum Overall bit rate : 48.0 Mbps

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Duration : 1h 49mn
Bit rate mode : Variable
Maximum bit rate : 35.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 24.000 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio #1
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 1h 49mn
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 502 MiB (2%)

TARGET1
General
Complete name : J:\GENITORI_E_FIGLI_dvdfab.mkv
Format : Matroska
File size : 17.3 GiB
Duration : 1h 49mn
Overall bit rate : 22.6 Mbps
Encoded date : UTC 2010-07-15 17:05:46
Writing application : DVDFab
Writing library : libebml v0.7.8 + libmatroska v0.8.1

Video
ID : 3
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Muxing mode : Container profile=Unknown@4.1
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 49mn
Bit rate : 21.5 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Original frame rate : 24.000 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.433
Stream size : 16.5 GiB (95%)
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio
ID : 4
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : A_AC3
Duration : 1h 49mn
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 503 MiB (3%)
Language : Italian

TARGET2
General
Complete name : J:\GENITORI_E_FIGLI_xxxxx.mkv
Format : Matroska
File size : 17.4 GiB
Duration : 1h 49mn
Overall bit rate : 22.7 Mbps
Encoded date : UTC 2010-07-14 23:16:10
Writing application : XXXXXX
Writing library : libxxxxx xxxxxxx (0.7.7/0.8.1) win(x64-release)

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Muxing mode : Container profile=Unknown@4.1
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 49mn
Bit rate : 21.6 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 24.000 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.434
Stream size : 16.5 GiB (95%)
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : A_AC3
Duration : 1h 49mn
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 502 MiB (3%)
Title : 3/2+1
Language : Italian

What do you mean "Thanks to the team for fixing the error" The error has not been fixed that I know of.

[psradar]

A warm "hallo" to all the forumer.
I'm fighting with the same problem since 1 month. I'm sure the problem is in the framerate modification. Now under test there is an italian movie, genitori e figli (it meanS parents and children), the original BD has been ripped on my hdd and then remuxed in mkv format.There are 2 different mkv files, the first one has been created by dvdfab, the second one by another common sw.
Dvdfab changes the framerate and the audio goes out of synch, the other one does nothingelse that remuxing.
Hereafter there are the analysis performed on source, targe1 and target2 by mediainfo.

Thanks to the team for fixing the error.

SOURCE
General
ID : 0
Complete name : J:\GENITORI_E_FIGLI BD\BDMV\STREAM\00016.m2ts
Format : BDAV
Format/Info : Blu-ray Video
File size : 20.5 GiB
Duration : 1h 49mn
Overall bit rate : 26.7 Mbps
Maximum Overall bit rate : 48.0 Mbps

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Duration : 1h 49mn
Bit rate mode : Variable
Maximum bit rate : 35.0 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 24.000 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio #1
ID : 4352 (0x1100)
Menu ID : 1 (0x1)
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Duration : 1h 49mn
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 502 MiB (2%)

TARGET1
General
Complete name : J:\GENITORI_E_FIGLI_dvdfab.mkv
Format : Matroska
File size : 17.3 GiB
Duration : 1h 49mn
Overall bit rate : 22.6 Mbps
Encoded date : UTC 2010-07-15 17:05:46
Writing application : DVDFab
Writing library : libebml v0.7.8 + libmatroska v0.8.1

Video
ID : 3
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Muxing mode : Container profile=Unknown@4.1
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 49mn
Bit rate : 21.5 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 23.976 fps
Original frame rate : 24.000 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.433
Stream size : 16.5 GiB (95%)
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio
ID : 4
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : A_AC3
Duration : 1h 49mn
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 503 MiB (3%)
Language : Italian

TARGET2
General
Complete name : J:\GENITORI_E_FIGLI_xxxxx.mkv
Format : Matroska
File size : 17.4 GiB
Duration : 1h 49mn
Overall bit rate : 22.7 Mbps
Encoded date : UTC 2010-07-14 23:16:10
Writing application : XXXXXX
Writing library : libxxxxx xxxxxxx (0.7.7/0.8.1) win(x64-release)

Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.1
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Muxing mode : Container profile=Unknown@4.1
Codec ID : V_MPEG4/ISO/AVC
Duration : 1h 49mn
Bit rate : 21.6 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 24.000 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.434
Stream size : 16.5 GiB (95%)
Color primaries : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177
Transfer characteristics : BT.709-5, BT.1361
Matrix coefficients : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177

Audio
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Mode extension : CM (complete main)
Codec ID : A_AC3
Duration : 1h 49mn
Bit rate mode : Constant
Bit rate : 640 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Side: L R, LFE
Sampling rate : 48.0 KHz
Bit depth : 16 bits
Stream size : 502 MiB (3%)
Title : 3/2+1
Language : Italian

[wapitikev]

It should not be a hardware issue, because many who have fast enough hardware are having the audio Sync problems.

It shows 29.967 on all the listed titles.

Matrix, ForestGump, Spiderman 2, Terminator 2, Terminator2 just crashed DVDFab7! Video is Excellent, but the audio is perfect at the first 20 minutes, then in the middle and towards the end, it is way off 2-3 seconds.

I don't care if I use .mp4, .MKV/H.264, Software only, Cuda Software, 23.97, 29.97, single pass or double pass, the results are always the same. 90 percent of my DVDs are like brand new, with many only played once, or twice.

My hardware is plenty fast enough, and I have tried three different media players.

Personally I don't understand .vob files and how the files are the right files or the correct sequence, That's what I rely on DVDFab7 for. Well, hopefully in the very near future.

Leon

Ok...it's not looking good for the Matrix on my rig.

MediaInfo shows all VOBs at 29.97 (just as Southerndude stated).

An encode at 23.976 was extremely out of sync.

An encode at 29.97 was out by about 1 second at the end of the file.

I'm encoding now at "same as source" but I expect that the same problem will result.

As discussed on the first few pages of the thread, it looks like DVDFab has a problem dealing with 29.97fps video (either with the fps math or with a hard-coded fps rate that is not 29.97).

If "same as source" fails, I will try "split by chapter" and report back.

-Wapitikev

[Basementjack]

Me too...

I have had issues ripping movies to xvid for a while.
Today I tried wall-E to h264 (ipad) and had sound issues on there too.

I'm ripping it in Handbrake on my laptop and will see if the results are any different.

When that's done I'll try the suggestion of ripping to the hard drive first, validating audio then converting to see if it's related to layer break.

Mostly I just wanted to add a +1 to this thread so that the developers know - hopefully there is a software fix for it soon.

[happnatious1]

Mission to mars is a movie that goes out of sync.

I believe vts_05_1 is the start of the main movie, media info shows 23.976
same for vts_05_2 through vts_05_6, all 23.976
vts_05_0 shows 29.970 but thats not part of the movie is it?
Does DVDFab read every file as it runs or does it read one file somewhere and then assume every file is the same?

who knows! Without more information from DVDFab we are just speculating. I'm sure they have people providing them with all the information they need to troubleshoot this problem if not I'd like to volunteer.

[wapitikev]

It should not be a hardware issue, because many who have fast enough hardware are having the audio Sync problems.

It shows 29.967 on all the listed titles.

Matrix, ForestGump, Spiderman 2, Terminator 2, Terminator2 just crashed DVDFab7! Video is Excellent, but the audio is perfect at the first 20 minutes, then in the middle and towards the end, it is way off 2-3 seconds.

I don't care if I use .mp4, .MKV/H.264, Software only, Cuda Software, 23.97, 29.97, single pass or double pass, the results are always the same. 90 percent of my DVDs are like brand new, with many only played once, or twice.

My hardware is plenty fast enough, and I have tried three different media players.

Personally I don't understand .vob files and how the files are the right files or the correct sequence, That's what I rely on DVDFab7 for. Well, hopefully in the very near future.

Leon

I'll try one of those when I get home tonight and see what MediaInfo and DVDFAB do with it.

-Wapitikev

[Monty68]

I'm not seeing this issue but all my DVD's are PAL (25fps) but reading this thread I did wonder if the audio started to go out of sync when FAB changed to another VOB file in the encoding process.

An experiment would be to RIP a DVD using FAB, then run it through DVD Shrink but telling Shrink to create a single VOB. Then you could run it through the FAB's DVD to Mobile and see if you get the same result.

[southerndude]

What's an example of one title?

Perhaps there are others who've had success, which would point to a hardware/config issue that the devs could look at?

What does MediInfo say about the source files of the ones that Fab won't do for you?

-Wapitikev

It should not be a hardware issue, because many who have fast enough hardware are having the audio Sync problems.

It shows 29.967 on all the listed titles.

Matrix, ForestGump, Spiderman 2, Terminator 2, Terminator2 just crashed DVDFab7! Video is Excellent, but the audio is perfect at the first 20 minutes, then in the middle and towards the end, it is way off 2-3 seconds.

I don't care if I use .mp4, .MKV/H.264, Software only, Cuda Software, 23.97, 29.97, single pass or double pass, the results are always the same. 90 percent of my DVDs are like brand new, with many only played once, or twice.

My hardware is plenty fast enough, and I have tried three different media players.

Personally I don't understand .vob files and how the files are the right files or the correct sequence, That's what I rely on DVDFab7 for. Well, hopefully in the very near future.

Leon

[wapitikev]

I doubt that to be the issue. I am using another product to make perfectly synced WMV files on the same machine I am having sync issues with Fab. Fab fails while the other works fine. I am waiting to even retry Fab for x to Mobile until Fengtau specifically indicates the issue is resolved in a future release.

What's an example of one title?

Perhaps there are others who've had success, which would point to a hardware/config issue that the devs could look at?

What does MediInfo say about the source files of the ones that Fab won't do for you?

-Wapitikev

[MRL_DVDFab]

Damn Movie companies! Why can't they make a DVD without mixing up the bitrate so I can rip it to disk without any audio problems?!

I doubt that to be the issue. I am using another product to make perfectly synced WMV files on the same machine I am having sync issues with Fab. Fab fails while the other works fine. I am waiting to even retry Fab for x to Mobile until Fengtau specifically indicates the issue is resolved in a future release.