Re: How can sound be out of sync on Firewire capture? Pinnacle Studio 9
- From: "John F. Miller" <johnATenosoft.net>
- Date: Mon, 7 Nov 2005 09:56:47 -0500
Are your captured files Type 1 or Type 2 DV AVI?
Type 1 is a simple byte-for-byte copy of the DV data stream wrapped in a
suitable AVI header etc. The audio and video are stored together in each
frame.
Type 2 is basically Type 1 with a second copy of the audio stream stuck on
the end. A editor/player accessing this type of file can easily get out of
sync.
Full details at:
http://msdn.microsoft.com/library/en-us/directshow/htm/type1vstype2dvfiles.asp
(and links therein).
IMHO, Type 2 files are bad news and exist soley for backwards compatibility,
especially with Video for Windows (VfW) based apps rather than DirectShow.
Vendors of new apps should be ashamed of themselves if they still depend of
VfW.
Does your capture program allow a choice between Type 1 and Type 2?
If not, try capturing from the OS - with XP, you should see your camcorder
listed in My Computer. You can open it, see the video and capture to disk.
( I was astonished recently when trying Premiere Pro 1.5 to discover that
when you render a new DV file, it creates Type 2 files with one audio format
in the true DV data area and a different one in the audio copy area.)
As far as Pinnacle Studio 9 is concerned, there's a lot of low opinion about
it (well, Pinnacle in general) on this and similar NGs. I have no personal
experience with it.
John.
--
John Miller
http://www.enosoft.net/
high performance tools for music and video
"Doc" <docsavage20@xxxxxxxxxxxx> wrote in message
news:e3Cbf.6312$AS6.3973@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> After doing a 2hr capture via Firewire, on playback, I find the sound gets
> progressively farther adhead of the video.
>
> The capture was done via Firewire pass-through - i.e. Analog VCR Composite
> out > Sony Dig8 Camcorder > Audigy 1394 Port captured with Pinnacle
> Studio
> 9 - w/update to 9.4.3 O/S is XP Home.
>
> Several points that may or may not be significant:
>
> 1) The sync is off no matter what I play it in - PS9, Virtualdub, WinMedia
> Player 9.
>
> 2) It didn't do this before on this same machine, same O/S using the same
> copy of PS9 w/update, same camcorder, however with the following
> alterations:
>
> 3) I recently did a clean install of WinXP since I got it w/XP installed
> and no disks. Got a new OEM Copy of XP, no problems on the install.
> However,
> this time I formatted the O/S drive to NTFS, whereas before it was FAT32.
> I
> use a second dedicated video drive which was already previously formatted
> to
> NTFS.
>
> 4) I installed the Main Concept DV codec so I'd have a DV codec for use
> with
> Virtualdub. Previously had the free Panasonic DV codec installed but it
> hasn't been installed since this most recent O/S installation.
>
> 5) Virtualdub file info shows 29.97 fps, Main Concept DV decompressor,
> 48khz
> 16bit stereo sound.
>
> How can the sound be off on the original file if it's all dumped onto the
> drive at the same time via Firewire? I've heard of this happening after
> it's
> been rendered for DVD but on the original file?
>
> I appreciate all shared wisdom.
>
>
.
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