My investigations into audio sync issue

[midiwall]

ALL OF MY COMMENTS are DVD->MOBILE ONLY.

Ditto

I have absolutely no experience (nor any interest) in the Blu-Ray crap.

(almost) Ditto. I have just 1 Blu-Ray title against hundreds of DVDs.

Remember in all your testing that there are 3 settings to control the output framerate, one in the GUI on the Edit page, one in the profile and another in Common Settings. Some can override others, producing unanticipated results

Yeup... When I talk about trying various framerates, I'm setting them every place I can find them.

[IPopov50]

Yeup... When I talk about trying various framerates, I'm setting them every place I can find them.

All DVDFab's output content have 23.976 fps framerate. If I'm right in my guess (see my earlier post), and Fab can't read framerate info, setting all defaults and variables to 23.976 will do the trick

[midiwall]

All DVDFab's output content have 23.976 fps framerate. If I'm right in my guess (see my earlier post), and Fab can't read framerate info, setting all defaults and variables to 23.976 will do the trick

Hmm, okay, but back back up in post #9, my tests didn't prove that out: (if the frame rate wasn't specified in the title, I didn't touch it anywhere, thus taking the DVDFab default of 23.976fps)

• Bad, i.e., Audio Sync issues
  • MAX_PAYNE_avi_h264_720x304_Fast_787kbps
  • MAX_PAYNE_avi_h264_720x304_High_1100kbps
  • MAX_PAYNE_avi_h264_848x358_fast_1100kbps_23.976fps
  • MAX_PAYNE_avi_h264_Samsung_720x304_High_1100kbps
  • MAX_PAYNE_mp4_h264_720x304_Fast_787kbps
  • MAX_PAYNE_mp4_h264_720x304_High_1100kbps

I'm at work now, and my home machine is re-running my previous batch using 6.2.2.2, but I can hunt down the various frame rate variables later tonight and specifically set anything/everything to 23.976fps.

[IPopov50]

Hmm, okay, but back back up in post #9, my tests didn't prove that out: (if the frame rate wasn't specified in the title, I didn't touch it anywhere, thus taking the DVDFab default of 23.976fps)

This is exactly what I'm saying. If your content is, in fact 23.976 and DVDFab is set to 23.976, there maybe a hardcoded conflicting default (in a profile or somewhere else- there were three places identified so far) of say 24fps. Following this default, DVDFab will mux video @ 23.976 and timestamp audio @ 24fps - you will have runaway audio.

[midiwall]

This is exactly what I'm saying. If your content is, in fact 23.976 and DVDFab is set to 23.976, there maybe a hardcoded conflicting default (in a profile or somewhere else- there were three places identified so far) of say 24fps. Following this default, DVDFab will mux video @ 23.976 and timestamp audio @ 24fps - you will have runaway audio.

Gotcha... I'll check when I get home, or if the current batch gets done before that.

[midiwall]

Follow up question for Signals and IPopov...

How can I tell what the frame rate really should be? If I look at one of the VOBs I'm working from through Windows Explorer/Properties/Details, it's tagged as "29fps". Is that Explorer actually truncating "29.97"?

There is nothing in the INFO section of DVDFab, that only shows the copy protection stats.

I have a quick test running with my test title at 29.97fps. That's something I hadn't done previously.


Thanks guys.

[IPopov50]

Best and quickest way is to open file with MediaInfo (a little free program, Google it), it will give you a whole scoop.

Follow up question for Signals and IPopov...

How can I tell what the frame rate really should be? If I look at one of the VOBs I'm working from through Windows Explorer/Properties/Details, it's tagged as "29fps". Is that Explorer actually truncating "29.97"?

There is nothing in the INFO section of DVDFab, that only shows the copy protection stats.

I have a quick test running with my test title at 29.97fps. That's something I hadn't done previously.


Thanks guys.

[GregiBoy]

@IP

Gotcha again...

It very much depends on where and how the DVD was authored. The world is not just the US!!!!!

In PAL countries such as Oz, 25fps is the norm.

All DVDFab's output content have 23.976 fps framerate. If I'm right in my guess (see my earlier post), and Fab can't read framerate info, setting all defaults and variables to 23.976 will do the trick

[GregiBoy]

This is for DVD to Mobile, not Blu-Ray to Mobile !!!

Further to this, this may be tied in with the fact that you guys are having problems whereas I am not.

I have just done 3 test encodes overnight of my usual "Problem Child", Deja Vu.

I did:-

generic.avi.xvid.audiocopy
generic.h264.avi.audiocopy
generic.h264.mkv.audiocopy

All with the framerate set the "Same as Source" and GPU accel on.

And there is no sync problems with any of them, played on hardware and software players.

I confirmed that the DVD is actually authored at 25fps with MediaInfo and that the resultant files are also.

Can someone please do a similar test with their "Problem Children"?

[midiwall]

Best and quickest way is to open file with MediaInfo (a little free program, Google it), it will give you a whole scoop.

Done! (thank you)

The VOBs for my problem child are flagged as 23.976fps. But, the IFOs are flagged as 29.970fps. Is that a clue?

I did:-

generic.avi.xvid.audiocopy
generic.h264.avi.audiocopy
generic.h264.mkv.audiocopy

All with the framerate set the "Same as Source" and GPU accel on.

And there is no sync problems with any of them, played on hardware and software players.

I confirmed that the DVD is actually authored at 25fps with MediaInfo and that the resultant files are also.

Can someone please do a similar test with their "Problem Children"?

I will set that up when I get home.

[IPopov50]

@GregiBoy

No you did not. I will repeat - ALL of my content coming out of DVDFab with 23.976, which lead me to believe that this is defaulted parameter in DVDFab. And saying ALL of my content, I meant all, because I also backing up PAL video (Russian movies).

@IP

Gotcha again...

It very much depends on where and how the DVD was authored. The world is not just the US!!!!!

In PAL countries such as Oz, 25fps is the norm.

[IPopov50]

The VOBs for my problem child are flagged as 23.976fps. But, the IFOs are flagged as 29.970fps. Is that a clue?
.

This is, in fact, a clue... and I'm pretty sure is a problem as well.

[midiwall]

Here's another wrench... I used MediaInfo with another movie I have copied to HD, Michael Jackson's "This Is It".

There are 4 VOB files, the first three are flagged 29.970fps, the last one is flagged 23.976fps. How will DVDFab (or we) deal with that?

[IPopov50]

Oh man, this is Friday night, give us a break
Seriously, you saying you've ripped it to HDD. Now, try to do your conversions and see what happened... we'll go from there.
But do it with new beta 7.0.5.1 I haven't tried it, but looks like there were serious changes made.

QUOTE=midiwall;34476]Here's another wrench... I used MediaInfo with another movie I have copied to HD, Michael Jackson's "This Is It".

There are 4 VOB files, the first three are flagged 29.970fps, the last one is flagged 23.976fps. How will DVDFab (or we) deal with that?[/QUOTE]

[midiwall]

HAHAH!

I've only been working from HD these past couple of days, I did that to rule out the variable of the DVD drives. The results back in post #9 were based on HD -> Mobile. I've confirmed that the raw HD rips are all "fine" in regards to audio sync. Then confirmed that again by the one run I did using the "Pass Through" profile to get from 4 VOBs to 1 VOB.

I still have a batch of conversions running with 6.2.2.0, so I'll wait until those are done (just for the sake of knowledge) then I'll install 7.0.5.1 and re-run the batch.

{are we having fun yet?}

Oh man, this is Friday night, give us a break
Seriously, you saying you've ripped it to HDD. Now, try to do your conversions and see what happened... we'll go from there.
But do it with new beta 7.0.5.1 I haven't tried it, but looks like there were serious changes made.

Here's another wrench... I used MediaInfo with another movie I have copied to HD, Michael Jackson's "This Is It".

There are 4 VOB files, the first three are flagged 29.970fps, the last one is flagged 23.976fps. How will DVDFab (or we) deal with that?