naturerecordists
[Top] [All Lists]

5. Re: from metadata to archiving - georeferencing .wav files in bat su

Subject: 5. Re: from metadata to archiving - georeferencing .wav files in bat su
From: "John Lundsten" lundsten_john
Date: Tue May 11, 2010 2:26 pm ((PDT))
I'm getting some strange readings from these 3 files
Nnoc T0000002.WAV
Nnoc T0000012.WAV
Ppip T0000021.WAV

The EBU chunk viewer refuses to open the files
EDL Convert doesn't recognise the bext chunk or the sample rate
Widget Pro sees the sample rate as 44.1k.
Fostex BWF Manager, Total Commander, Adobe Audition, Sony Vegas Pro & Sound=

devices Wave Agent see the sample rate as =3D250k

Now whilst 48k is the "assumed" sample rate of a BWF other sample rates are=

allowed. But 250k being way higher than most apps would expect (& DAW's to=

play) I can imagine they will not have programmed for this possibility.

Using "Nnoc T0000002.WAV"
The timestamp is read as:--
BwavWriter =3D   00:01:02:10.2 ( not clear to me what sub second units are=

being used here, ceratainly there is no FPS setting)
WidgetPro =3D     00:05:53:10 (assuming 25fps frame rate)
Wave agent =3D   00:11:09:14 (assuming 25fps frame rate) [167390001 samples=

since midnight]
Adobe Audition =3D0:01:02.341 (2.341 seconds) [or 15585250 samples since
midnight]
Sony Vegas Pro9=3D doesn't reconise the bext or existance of any other chun=
ks

BwavWriter  & WidgetPro agree as to the location & length of the chunks.
fmt, data, TIME, GPS, bext

John L

<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU