My investigations into audio sync issue

[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]

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.

[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.

[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.

[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"?

[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

[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.

[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.

[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.

[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]

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]

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 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.

[signals]

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. The control logic for this has been changed several times in DVD to Mobile.

[CBR929]

I think we are into the normal confusion here again as you guys have started posting about two different things here, DVD to Mobile & Blu-Ray to Mobile.

ALL OF MY COMMENTS are DVD->MOBILE ONLY.

I have absolutely no experience (nor any interest) in the Blu-Ray crap. I regard the whole Blu-Ray scenario as an under-achieving, over-priced attempt by manufacturers & studios to bleed more money from consumers by selling more hardware and poorly authored titles.

I'm sorry if I had posted anything off topic. I was just trying to help not knowing if it was related or not, I didn't know.
I do not do conversions, or changing things to different formats, just DVD to DVD burns and like they say ( two heads are better than one) so I was just trying to sort out different solutions.
Again Sorry
CBR929