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Odd PAL to NTSC question

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I'm looking to do an fanedit of my own real soon of a fairly well known concert DVD. I don't want to say too much on what one I am going to work on at the moment since I don't want to get people's hopes up right away..... outside of the fact that the official DVD has a god aweful "directors cut" that most fans of this band really dislike.

The issue is that the official DVD's sound while the video *IS* NTSC on the Region 1 release the audio for some odd reason has the same speed/pitch issues that you would expect from a PAL DVD. In other words its playing a bit too fast. I verified this myself as I ripped the audio from the DVD to my system then slowed it down on Winamp until it sounded proper.

Anyways... is there a way I can get this adjusted to the video while keeping everything synched? My biggest worry is that the audio after adjusting it will no longer synch with the video. I will certainly be thankful of any suggestions, advice, etc....

Oh, and thanks in advance.
Brian The Demolition Man Little
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So you want to keep the audio the same length but decrease the pitch?

Yes there are several audio editors that can do this, even a free command line program SoundStretch. However, such methods may introduce digital artefacts, especially on music.

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You need to find out the frame rate the video is in. Demux the audio and video and take the audio file and load it up into DGPulldown program and then let it convert it to the proper frame rate that you need.
If it is just a poor sync issue then you will need to experiment with time streching or interleaving and audio skew correction.
There are several programs that can do this. Just do a search in google.
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Okay here is what Mediainfo is telling me... I should of done this on my first post but didn't think of it......

Video
Codec: MPEG-2 Video
Bit rate: VBR
Width: 720
Height: 480
Aspect Ratio: 4/3
Frame rate: 25fps
Standard: NTSC

Audio
Codec: AC3
Channels: 2
Sampling Rate: 48hrz
Resolution: DRC bits
Language: English
Brian The Demolition Man Little
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Originally posted by: demomanTNA
Video
Codec: MPEG-2 Video
Bit rate: VBR
Width: 720
Height: 480
Aspect Ratio: 4/3
Frame rate: 25fps
Standard: NTSC
That is odd. It implies your source is PAL speed - which may be sped up.
Some were not blessed with brains.
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make Lucas lose a lot of his money
and make him look bad to the entire world
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None of us here like Lucas or Lucasfilm.
I have death wishes on Lucas and Macullum.
we could all probably get 10s of thousands of dollars!
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Originally posted by: boris
Originally posted by: demomanTNA
Video
Codec: MPEG-2 Video
Bit rate: VBR
Width: 720
Height: 480
Aspect Ratio: 4/3
Frame rate: 25fps
Standard: NTSC
That is odd. It implies your source is PAL speed - which may be sped up.


Indeed. That is why I'm trying to figure out how exactly I can fix this issue for my edit.

Brian The Demolition Man Little
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Video with NTSC resolution (720x480) and a PAL framerate (25fps) is not DVD compliant.

I think that Mediainfo is probably reporting duff information. What does Bitrate Viewer say? Or try loading into VirtualDubMod and select File -> File Information.

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Here's Bitrate Viewer....

Num. of picture read: 48189
Stream type: MPEG-2 MP@ML CBR
Resolution: 720*480
Aspect ratio: 4:3 Generic
Framerate: 29.97
Nom. bitrate: 5000000 Bit/Sec
VBV buffer size: 112
Constrained param. flag: No
Chroma format: 4:2:0
DCT precision: 10
Pic. structure: Frame
Field topfirst: Yes
DCT type: Field
Quantscale: Nonlinear
Scan type: Alternate
Frame type: Interlaced
Notes:
Brian The Demolition Man Little
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And here is VideoDubMod's info..... this is extremely strange indeed.....

http://img237.imageshack.us/img237/3663/dubinfokt6.jpg
Brian The Demolition Man Little
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That makes more sense - the framerate is now reported as 29.97fps, which is a valid NTSC video stream.

So what's the audio, AC3? I think you should be able to use BeSweet with the -soundtouch parameters to lower the pitch by one semitone, whilst keeping the same length (and thus keeping sync with the video).

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Perfect perfect perfect. That does the trick perfectly Moth3r.

I'm going to make the announcement of my first fan edit here in a moment or two as beyond this issue the rest is a cakewalk.

Again... big thanks Moth3r.
Brian The Demolition Man Little
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I'm interested to know what's the quality like? Can you hear any digital "stepping" artefacts in the sound?

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