Alpha Channel in H264?

[Flatulent Father Flannigan]

I would like to encode an alpha channel in H264 streams. I am looking for an
app that will provide that functionality. Any ideas?

[Flatulent Father Flannigan]

>
> "Flatulent Father Flannigan" <xref@xt8934hgf02945.com> wrote in message
> news:mqdrl.21542$Ws1.625@nlpi064.nbdc.sbc.com...
>>I would like to encode an alpha channel in H264 streams. I am looking for
>>an app that will provide that functionality. Any ideas?
>>
>>
>
> Is this an SD survailance application? There are hardware overlay
> functions that take care of that.
>
> You need to be supplying a great deal more specific data in your
> posts.
>
> I know of no situation where H.264 is being used for editing
> source, except under duress. An alpha channel effect would
> have been applied prior to a conversion to H.264.
>
> You need to explain how your case is otherwise.
>
> Luck;
> Ken

Ken..

I would like to ENCODE alpha data in H264 streams.

Yes.. an alpha channel would have to be appplied prior to conversion. Assume
I have that covered..

So.. the question I asked was whether anyone knows of any encoders that will
accept alpha encoded data such as ANY 32 bit image format and convert it to
single bit or grayscale encoded alpha (transparency) as part of the H264
encode. My application requires a transparency channel in H264 encode. None
of my NLEs offer a solution so prior to coding our own I thought someone may
already know of an encoder which will implement this feature of H264. I
haven't thoroughly gone through the Quicktime Pro stuff yet.. the solution
may be there but we shy away from QT in any of our commercial workflow..

Of course I am not using H264 for editing source. Just curious. .. how did
you get that from my question?

For the record I am developing content for our hardware device which will
have a modified H264 decoder that will extract and use the alpha channel.

Thanks

nao