On 03/01/06, [EMAIL PROTECTED]
<[EMAIL PROTECTED]> wrote:
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> Today's Topics:
>
> 1. demuxer returns empty list when parsing (Jeffery Cheng)
> 2. pitch detection (Robert Helmer)
> 3. Re: pitch detection (Dmitry Borisov)
> 4. Re: demuxer returns empty list when parsing (Dmitry Borisov)
> 5. Re: demuxer returns empty list when parsing (Jeffery Cheng)
>
> --__--__--
>
> Message: 1
> Date: Tue, 3 Jan 2006 14:25:06 -0500
> From: Jeffery Cheng <[EMAIL PROTECTED]>
> To: [email protected]
> Subject: [Pymedia-users] demuxer returns empty list when parsing
>
> I need to decode a msmpeg4v2 avi, but I cannot get the demuxer to
> parse the video correctly. Using recode_video.py as an example, after
> executing
> s=3D f.read( 400000 )
> r=3D dm.parse( s )
> "r" is empty. No error is outputted, except that the generic windows
> error dialog pops up.
>
> For what reasons would dm.parse return an empty list? I have verified
> that it can parse other video types correctly, such as mpeg1 and
> mpeg2.
>
> I am using pymedia-1.3.5.0-pre2.win32-py2.3.exe. Any help would be
> greatly appreciated. Thanks in advance.
>
>
> --__--__--
>
> Message: 2
> Date: Tue, 03 Jan 2006 12:25:46 -0800
> From: Robert Helmer <[EMAIL PROTECTED]>
> To: [email protected]
> Subject: [Pymedia-users] pitch detection
>
> Hello,
>
> I am working on a voice-training python application that involves pitch
> detection. I have had some good results using FFT but it's a bit too
> slow (I can't get good detection without a very large sample size it seems).
>
> Could SpectrAnalyzer be useful for pitch detection? I am a bit confused
> as to how to use this class properly; the example (sound_viz.py) doesn't
> work in the latest release due to what looks like API changes. I think
> being able to experiment with a working implementation would help me to
> be able to play around with FFT and other algorithms (Schmitt-triggering
> for instance).
>
> I took a peek at the implementation of SpectrAnalyzer in C and I am not
> sure how much overlap there is between what I am trying to do and
> SpectrAnalyzer; it seems quite capable but my inexperience in digital
> audio processing is holding back my understanding.
>
> I've been learning just how little I know about DSP by embarking on
> this, so any suggestions would be greatly appreciated!
>
>
> Thanks,
> Rob Helmer
>
>
> --__--__--
>
> Message: 3
> From: "Dmitry Borisov" <[EMAIL PROTECTED]>
> To: <[email protected]>
> Subject: Re: [Pymedia-users] pitch detection
> Date: Tue, 3 Jan 2006 19:40:09 -0800
>
> Hi,
> It could work for you.
> Basically SpectrAnalyzer is taking the fixed number of samples >512 and
> returns the frequencies strength. If you use much more samples it may not
> work well for you though.
> Sorry I never did pitch detection myself, so I cannot tell if it'll work for
> you.
> Dmitry/
>
> ----- Original Message -----
> From: "Robert Helmer" <[EMAIL PROTECTED]>
> To: <[email protected]>
> Sent: Tuesday, January 03, 2006 12:25 PM
> Subject: [Pymedia-users] pitch detection
>
>
> > Hello,
> >
> > I am working on a voice-training python application that involves pitch
> > detection. I have had some good results using FFT but it's a bit too slow
> > (I can't get good detection without a very large sample size it seems).
> >
> > Could SpectrAnalyzer be useful for pitch detection? I am a bit confused as
> > to how to use this class properly; the example (sound_viz.py) doesn't work
> > in the latest release due to what looks like API changes. I think being
> > able to experiment with a working implementation would help me to be able
> > to play around with FFT and other algorithms (Schmitt-triggering for
> > instance).
> >
> > I took a peek at the implementation of SpectrAnalyzer in C and I am not
> > sure how much overlap there is between what I am trying to do and
> > SpectrAnalyzer; it seems quite capable but my inexperience in digital
> > audio processing is holding back my understanding.
> >
> > I've been learning just how little I know about DSP by embarking on this,
> > so any suggestions would be greatly appreciated!
> >
> >
> > Thanks,
> > Rob Helmer
> >
> >
> > -------------------------------------------------------
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> > _______________________________________________
> > Pymedia-users mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/pymedia-users
> >
>
>
>
> --__--__--
>
> Message: 4
> From: "Dmitry Borisov" <[EMAIL PROTECTED]>
> To: <[email protected]>
> Subject: Re: [Pymedia-users] demuxer returns empty list when parsing
> Date: Tue, 3 Jan 2006 19:41:39 -0800
>
> Does pymedia hangs on that file ?
> If yes, can you share it so we can fix it ?
> Dmitry/
>
> ----- Original Message -----
> From: "Jeffery Cheng" <[EMAIL PROTECTED]>
> To: <[email protected]>
> Sent: Tuesday, January 03, 2006 11:25 AM
> Subject: [Pymedia-users] demuxer returns empty list when parsing
>
>
> I need to decode a msmpeg4v2 avi, but I cannot get the demuxer to
> parse the video correctly. Using recode_video.py as an example, after
> executing
> s= f.read( 400000 )
> r= dm.parse( s )
> "r" is empty. No error is outputted, except that the generic windows
> error dialog pops up.
>
> For what reasons would dm.parse return an empty list? I have verified
> that it can parse other video types correctly, such as mpeg1 and
> mpeg2.
>
> I am using pymedia-1.3.5.0-pre2.win32-py2.3.exe. Any help would be
> greatly appreciated. Thanks in advance.
>
>
> -------------------------------------------------------
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> _______________________________________________
> Pymedia-users mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/pymedia-users
>
>
>
> --__--__--
>
> Message: 5
> Date: Tue, 3 Jan 2006 22:52:51 -0500
> From: Jeffery Cheng <[EMAIL PROTECTED]>
> To: [email protected]
> Subject: Re: [Pymedia-users] demuxer returns empty list when parsing
>
> ------=_Part_29376_16172995.1136346771029
> Content-Type: text/plain; charset=ISO-8859-1
> Content-Transfer-Encoding: quoted-printable
> Content-Disposition: inline
>
> pymedia does not hang. It just pops up the windows error and the parser
> returns an empty list.
>
> -Jeff
>
> On 1/3/06, Dmitry Borisov <[EMAIL PROTECTED]> wrote:
> >
> > Does pymedia hangs on that file ?
> > If yes, can you share it so we can fix it ?
> > Dmitry/
> >
> > ----- Original Message -----
> > From: "Jeffery Cheng" <[EMAIL PROTECTED]>
> > To: <[email protected]>
> > Sent: Tuesday, January 03, 2006 11:25 AM
> > Subject: [Pymedia-users] demuxer returns empty list when parsing
> >
> >
> > I need to decode a msmpeg4v2 avi, but I cannot get the demuxer to
> > parse the video correctly. Using recode_video.py as an example, after
> > executing
> > s=3D f.read( 400000 )
> > r=3D dm.parse( s )
> > "r" is empty. No error is outputted, except that the generic windows
> > error dialog pops up.
> >
> > For what reasons would dm.parse return an empty list? I have verified
> > that it can parse other video types correctly, such as mpeg1 and
> > mpeg2.
> >
> > I am using pymedia-1.3.5.0-pre2.win32-py2.3.exe. Any help would be
> > greatly appreciated. Thanks in advance.
> >
> >
> > -------------------------------------------------------
> > This SF.net email is sponsored by: Splunk Inc. Do you grep through log
> > files
> > for problems? Stop! Download the new AJAX search engine that makes
> > searching your log files as easy as surfing the web. DOWNLOAD SPLUNK!
> > http://ads.osdn.com/?ad_idv37&alloc_id=16865&op=3Dick
> > _______________________________________________
> > Pymedia-users mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/pymedia-users
> >
> >
> >
> > -------------------------------------------------------
> > This SF.net email is sponsored by: Splunk Inc. Do you grep through log
> > files
> > for problems? Stop! Download the new AJAX search engine that makes
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> > _______________________________________________
> > Pymedia-users mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/pymedia-users
> >
>
> ------=_Part_29376_16172995.1136346771029
> Content-Type: text/html; charset=ISO-8859-1
> Content-Transfer-Encoding: quoted-printable
> Content-Disposition: inline
>
> pymedia does not hang. It just pops up the windows error and the pars=
> er returns an empty list.<br>
> <br>
> -Jeff<br><br><div><span class=3D"gmail_quote">On 1/3/06, <b class=3D"gmail_=
> sendername">Dmitry Borisov</b> <<a href=3D"mailto:[EMAIL
> PROTECTED]">[EMAIL PROTECTED]
> ail.ru</a>> wrote:</span><blockquote class=3D"gmail_quote" style=3D"bord=
> er-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-l=
> eft: 1ex;">
> Does pymedia hangs on that file ?<br>If yes, can you share it so we can fix=
> it ?<br>Dmitry/<br><br>----- Original Message -----<br>From: "Jeffery=
> Cheng" <<a href=3D"mailto:[EMAIL PROTECTED]">[EMAIL PROTECTED]
> </a>><br>To: <<a href=3D"mailto:[email protected]";>=
> [email protected]</a>><br>Sent: Tuesday, January 03, 2=
> 006 11:25 AM<br>Subject: [Pymedia-users] demuxer returns empty list when pa=
> rsing
> <br><br><br>I need to decode a msmpeg4v2 avi, but I cannot get the demuxer =
> to<br>parse the video correctly. Using recode_video.py as an exa=
> mple, after<br>executing<br> s=3D f.read( 400000 )<b=
> r> r=3D dm.parse( s )<br>"r" is empty.&nbs=
> p; No error is outputted, except that the generic windows
> <br>error dialog pops up.<br><br>For what reasons would dm.parse return an =
> empty list? I have verified<br>that it can parse other video typ=
> es correctly, such as mpeg1 and<br>mpeg2.<br><br>I am using pymedia-1.3.5.0=
> -pre2.win32-py2.3.exe
> . Any help would be<br>greatly appreciated. Thanks in=
> advance.<br><br><br>------------------------------------------------------=
> -<br>This SF.net email is sponsored by: Splunk Inc. Do you grep through log=
> files<br>for problems? Stop! Download the new AJAX s=
> earch engine that makes
> <br>searching your log files as easy as surfing the web. &n=
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> id=16865&op=3Dick">http://ads.osdn.com/?ad_idv37&alloc_id=16865&=
> ;op=3Dick</a><br>_______________________________________________
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>
> ------=_Part_29376_16172995.1136346771029--
Is it possible to feed the spectrum analyzer samples in a format other
than S16_LE?
Thanks
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