Re: [Iaxclient-devel] [iaxclient] image format

[Paulo V. <vic...@gm...>]

Hi Bill,
Some capture devices I was testing don't have support to YUV-style format:

(I was using **iaxclient 2.0.1**)
 "@device:pnp:\\?\usb#vid_0ac8&pid_303b#5&6e0df6e&0&1#{65e8773d-8f56-11d0

-a3b9-00a0c9223196}\global"

320 x 240 0xe436eb7d  - Rejecting this format.

352 x 288 0xe436eb7d  - Rejecting this format.

160 x 120 0xe436eb7d  - Rejecting this format.

176 x 144 0xe436eb7d  - Rejecting this format.

640 x 480 0xe436eb7d  - Rejecting this format.

800 x 600 0xe436eb7d  - Rejecting this format.

1024 x 768 0xe436eb7d  - Rejecting this format.

1280 x 960 0xe436eb7d  - Rejecting this format.

did not match media type

Just have RGB24…

But now,with libvidcap (iaxclient 2.1) , it is able to accept rgb24 from
capture device and to delivery in YUV-format to iaxclient ( it's too good  to
know about libvidcap internals possibilities )

Thank you

Paulo

On Fri, Jun 13, 2008 at 3:23 PM, Bill Cholewka <bc...@ya...> wrote:

> Hi Paulo,
>
> It depends on what you mean by support. If a video capture device provides
> images in this format (rgb24), iaxclient can get these images. But, they
> will have been converted to one of the three formats you mentioned.
>
> Libvidcap, which performs the capture and conversion, has conversion
> functions in its external api which convert from each of these three format
> to the remaining two. Internally, however, it has conversion functions to
> convert from internally-supported (at capture time) formats (rgb555, yvu9,
> 2vuy, rgb24) to the three formats it exposes.
>
> If you're looking to get the captured images in an rgb24 format, one of
> libvidcap's internal functions could be adapted to convert from rgb32 to
> rgb24.
>
> Does this help?
>
> Regards,
> Bill
>
> ----- Original Message ----
> From: Paulo Vicentini <vic...@gm...>
> To: Iaxclient Mailing List <iax...@li...>
> Sent: Tuesday, June 10, 2008 3:26:18 PM
> Subject: [Iaxclient-devel] [iaxclient] image format
>
>  Hi,
>
> Iaxclient 2.0.1 (with video) doesn't support MEDIASUBTYPE_RGB24 (Windows
> IA-32) color format?right?
>
>
>
> I saw support just for (sub-sampled ones) :
>
> #define IMAGE_FORMAT_I420    0x30323449
>
> #define IMAGE_FORMAT_IYUV    0x56555949
>
> #define IMAGE_FORMAT_YUY2    0x32595559
>
>
> Is this a theora's encoding requirement?
>
> Thanks
> Paulo
>