On Mon, Aug 27, 2001 at 06:20:22AM -0700, Eugene Kuznetsov wrote:
> Hello monkeyiq,
>
> Sunday, August 26, 2001, 10:53:33 AM, you wrote:
>
>
> m> Hi,
> m> I noticed that in the vector of video_codecs I have installed
> m> many codecs that can handle the same fourcc.
> m> And cant seem to find a AddVideoStream() style function that allows
> m> me to give the CodecInfo object instead of a fourcc.
>
> m> Any ideas?
>
> I think it is not possible to do programmatically. ATM you can only
> create video stream using default codec for this fourcc. In almost all
> cases it's not causing any problems: many fourccs are shared by
> different codecs for _decoding_, but usually there's only one codec
> that's able to _encode_ into that fourcc.
Actually wrong answer here:
IVideoEncoder* CreateVideoEncoder(fourcc_t compressor,
const BITMAPINFOHEADER& bh,
const char* cname)
cname is used as the second key for resolving which codec you really want
to use - but I think may even change in the future slightly as
soon as we will start to support order lists of 'preffered codecs'
(actualy those list will be used for everything practicaly - decodeders,
video/audio/subtitle renderers - but it will take some time)
So for now you may fass exact code name -
it's compared with strcmp() - its the content of text attribute.
So avirecompress could pick the right compressor.
If cname is null - list is scanned in the order - which will be probably
prefferd way later - as if the first preffered codec fail - it will
fallback to next one in the list.
--
Debian GNU/Linux maintainer - www.debian.{org,cz}
Zdenek Kabelac http://i.am/kabi/ kabi@{i.am, debian.org, fi.muni.cz}
Resistance is futile. You all will be packaged
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