Speexdec plays ogg files. You can simply modify it to play your raw file or even
rtp capture.
Jozsef
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Today's Topics:
1. Re: Playing captured speex frames (Ashhar Farhan)
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Message: 1
Date: Sat, 9 Jul 2011 07:19:10 +0530
From: Ashhar Farhan <farhan at phonestack.com>
Subject: Re: [Speex-dev] Playing captured speex frames
To: "Shridhar, Vasant" <vasant.shridhar at harman.com>, Vinod
Panicker
<vinod.p at gmail.com>, "speex-dev at xiph.org" <speex-dev
at xiph.org>
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Adding ogg header won't do. The ogg is an envelope, not a header.
Lemme see the speex code and mail you the results. I remember that speexdec
processes raw packets and not ogg. There must be an issue with wireshark itself.
Can you send me the output from wireshark?
- farhan
On 7/8/11, Shridhar, Vasant <vasant.shridhar at harman.com>
wrote:> Speexdec is expecting the frames to be wrapped in an Ogg frame I believe.
> Since you have the raw data can't you just add the Ogg header
> information to this before passing it to Speexdec?
>
> Vas
>
> ________________________________________
> From: speex-dev-bounces at xiph.org [speex-dev-bounces at xiph.org] On
> Behalf Of Vinod Panicker [vinod.p at gmail.com]
> Sent: Friday, July 08, 2011 12:13 AM
> To: speex-dev at xiph.org
> Subject: Re: [Speex-dev] Playing captured speex frames
>
> On Fri, Jul 8, 2011 at 6:39 AM, Ashhar Farhan <farhan at
phonestack.com> wrote:
>> what you need to do is this: take the wireshark raw dump, read each
>> udp packet and write it back to another file. While writing back to
>> the new file skip the sizeof udp header + rtp header. I can't
recall
>> how many bytes you need to skip, however, I suppose it would be in
>> the range of 36 and 32 bytes. A five line perl script will do it.
>
> Thanks for the suggestion, but Wireshark already does what you've
> suggested. There's an option to save the raw payload to a file. This
> file only has the speex frames (no udp+rtp headers). speexdec still
> complains about it not being a valid speex file presumably because the
> file is missing the header.
>
> Apart from manually constructing a header and prefixing it to the
> file, any other ideas?
>
> Regards,
> Vinod.
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