[vorbis-dev] ACM codec

[Dambrin Didier]

maybe, but in my case that only my app has to read those wave files
correctly, it doesn't matter. I don't even stream those waves, so relocation
doesn't matter.

But I'm concerned by the unregged format tag, though.
I don't know how up-to-date this list is:
http://www.goice.co.jp/member/mo/formats/wav.html. Now, the old ACM is
almost dead, chances are that not many new formats will be added anymore (in
favor of directshow).

What do you mean by user comments? Not that I need them in my particular
case, but the WAV format is very capable of carrying many info in either
published chunks, or if needed in new specific chunks.

<p>> Good day.
>
> I think a valid wraping Ogg Vorbis format in WAV cover is not reasonable
> (even
> impossible). Off cause if Ogg Vorbis ACM codec will not require specific
> operation with it (but in this case it will not true ACM codec).
> The reasons:
> - wraping any VBR format in WAV cover is hard in principle (at least
because
> of
> problems with determining file duration and positioning - try to encode
> something
> with the Ogg Vorbis ACM codec and open encoded file in WinAmp);
>
> As for particular Ogg Vorbis ACM codec:
> - it has manufacturer ID=0 (as i know
> there is a problem on NT system if there are several codecs with the same
> manufacturer ID); format tags (WAVEFORMATEX.wFormatTag) for the codec are
> unregistered and there is a probability, that you receive several formats
> with the same
> format tags installed.
> - you will have the problems with using "user comments";
> - you will have the problems with convertings "ogg" file<->"ogg - wav"
file
> (it will
> be impossible without decoding);
> - you do not have all capabilities that Ogg Vorbis library gives (e.g.,
> quality
> managed encoding);
>
> It seems there is many other reasons.
>
> Vitaly.
>
> --- >8 ----
> List archives:  http://www.xiph.org/archives/
> Ogg project homepage: http://www.xiph.org/ogg/
> To unsubscribe from this list, send a message to
'vorbis-dev-request at xiph.org'
> containing only the word 'unsubscribe' in the body.  No subject is needed.
> Unsubscribe messages sent to the list will be ignored/filtered.

--- >8 ----
List archives:  http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'vorbis-dev-request at xiph.org'
containing only the word 'unsubscribe' in the body.  No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.