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Re: Audio Files for Testing (thanks phl!)

From: Philippe Le Hegaret <plh@w3.org>
Date: Thu, 17 Jun 2010 15:42:02 -0400
To: Maciej Stachowiak <mjs@apple.com>, Kris Krueger <krisk@microsoft.com>
Cc: "'public-html-testsuite@w3.org'" <public-html-testsuite@w3.org>
Message-Id: <1276803722.9544.10.camel@chacal>
On Thu, 2010-06-17 at 12:34 -0700, Maciej Stachowiak wrote:
> On Jun 17, 2010, at 12:31 PM, Philippe Le Hegaret wrote:
> 
> > On Thu, 2010-06-17 at 18:59 +0000, Kris Krueger wrote:
> >> Actually we also need another file type - AAC in a MP3 container.
> >> Philippe I can convert the wav and send you this file format if it helps.
> > 
> > I don't seem to be able to encapsulate aac in an mp3 container. So yes,
> > I'd appreciate if you can send me this file format.
> 
> I don't think there is such a thing as an MP3 container. MP3 is a codec (technically MPEG-2 Audio Layer 3), not a container format.

Ah, I was wondering about that in fact. My various encoders were indeed
acting strangely when I was trying to produce the combination.

>  MPEG-4 AAC audio is conventionally served in an MPEG-4 container. You might be able to put it in an MPEG-2 container instead (to match MP3), but I am not sure that is a sensible or useful configuration.

Kris, note that the MP4 contains aac. Are you sure you're not looking
for that? Or are you simply looking for an MP3 file?

Philippe
Received on Thursday, 17 June 2010 19:42:07 GMT

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