Problem with the profile MKV Passthrough - Audio out of Sync

sherlogg

Hello!

I have ripped the films Avatar 1 and Avatar 2, both 4K UHD Blu-rays, with the MKV Passtrough profile. With both MKVs, a synchronisation problem between audio and film occurs after about half of the films. At first only for about half a second and then 2 to 3 seconds at the end of the film.
Is this a known problem?

If I use the MP4 Passthrough profile, this problem does NOT occur.

I use DVDFab 13.0.3.9, 64 Bit.

Regards, Dieter

pacman

Hi Dieter
I have also had this problem with the first Avatar movie when it was originally released on bluray. It occurred using ripper and copy mode
you will find the lip sync problem begins at the start of the movie and progresses to go further out of sync at the same rate until the end of the movie. It does become more noticeable as the movie progresses. the keener the eye and ear the sooner it is noticed. I have tried unsuccessfully to remedy this and at first thought it was my computer. I ended by giving up and using the disc when watching the movie.

pacman

october262

Hello!

I have ripped the films Avatar 1 and Avatar 2, both 4K UHD Blu-rays, with the MKV Passtrough profile. With both MKVs, a synchronisation problem between audio and film occurs after about half of the films. At first only for about half a second and then 2 to 3 seconds at the end of the film.
Is this a known problem?

If I use the MP4 Passthrough profile, this problem does NOT occur.

I use DVDFab 13.0.3.9, 64 Bit.

Regards, Dieter
sherlogg

try going into common settings - avcodec - slect disable all gpu codecs for encoding & decoding (everything will switch to software)
restart dvdfab and retry your discs with MKV Pasthrough again and see if that works.

sherlogg

Hi Dieter
I have also had this problem with the first Avatar movie when it was originally released on bluray. It occurred using ripper and copy mode
you will find the lip sync problem begins at the start of the movie and progresses to go further out of sync at the same rate until the end of the movie. It does become more noticeable as the movie progresses. the keener the eye and ear the sooner it is noticed. I have tried unsuccessfully to remedy this and at first thought it was my computer. I ended by giving up and using the disc when watching the movie.
pacman

But giving up is not a solution, is it?

sherlogg

try going into common settings - avcodec - slect disable all gpu codecs for encoding & decoding (everything will switch to software)
restart dvdfab and retry your discs with MKV Pasthrough again and see if that works.
october262

I already use these settings!

I have already ripped ‘Escape from New York’ 4K UHD and ‘The Name of Rose’ 4K UHD with these settings in the past. No problems.

Mona

Hello!

I have ripped the films Avatar 1 and Avatar 2, both 4K UHD Blu-rays, with the MKV Passtrough profile. With both MKVs, a synchronisation problem between audio and film occurs after about half of the films. At first only for about half a second and then 2 to 3 seconds at the end of the film.
Is this a known problem?

If I use the MP4 Passthrough profile, this problem does NOT occur.

I use DVDFab 13.0.3.9, 64 Bit.

Regards, Dieter
sherlogg

Thank you for posting, I will get the developers to look into the sync issue.

sherlogg

Thank you for posting, I will get the developers to look into the sync issue.
Mona

Thanks!!

tomoguisuru

I am seeing the same issue with audio being out of sync on almost every DVD or Blu-ray that I rip to MKV

I have tried doing passthrough for both audio and video but the issue persists.

There is also still the long standing bug where chapters are not preserve even though the option is selected unless you toggle it off and on again.

Mona

I am seeing the same issue with audio being out of sync on almost every DVD or Blu-ray that I rip to MKV

I have tried doing passthrough for both audio and video but the issue persists.

There is also still the long standing bug where chapters are not preserve even though the option is selected unless you toggle it off and on again.
tomoguisuru

Thanks for your feedback. Please submit a log file using the Feedback feature via DVDFab 13.
Regarding the chapters, are you referring to the fact that the passthrough MKV file does not retain those chapters?

slippen

Any Updates here?

sherlogg

Would also be interested in an update

Nik_Simpson

Just found the exact same problem with DVD audio sync issues using the latest version, but I still don't see any news from DVDfab on fixing this.

alex_videoman

I have discovered a worse issue for me with this, my iso is DTS-HD 7.1, and after the passthru either mp4 or mkv, the resulting movie is DTS 5.1, why is passthru messing up with audio when it should be "passthru".....

Mona

I have discovered a worse issue for me with this, my iso is DTS-HD 7.1, and after the passthru either mp4 or mkv, the resulting movie is DTS 5.1, why is passthru messing up with audio when it should be "passthru".....
alex_videoman

Hello, to retain DTS-HD MA 7.1, please do not use MP4 as it doesn't support; use MKV instead.

While converting a movie with DTS-HD 7.1 to MKV using passthrough, do you happen to tick the option “remove HD” for the audio "DTS-HD 7.1"?

slippen

Are you working on a fix in general?