[theora-dev] Using the VP3 ENCODER in a DIRECTSHOW GRAPH wit defined quality and BANDWIDTH - HOW?

Daniel B. Miller dan at on2.com
Wed Aug 21 11:36:23 PDT 2002



so you are using the VFW codec, right?

The codec presently looks in the registry to get the bandwidth parameters.

I would suggest looking at this function (in vp31vfw.cpp):

void registry2settings(COMP_CONFIG &CompConfig)
{
        char vp3settings[120];
        unsigned long size;

<p>Registry_GetEntry(&vp3settings,REG_CSTRING,&size,"strSettings",REGACCESS);

    sscanf( vp3settings,
                "%ld %ld %ld %ld %ld %ld %ld %ld %ld %ld ",
                &CompConfig.TargetBitRate,
                &CompConfig.Quality,
                &CompConfig.KeyFrameDataTarget,
                &CompConfig.AllowDF,
                &CompConfig.QuickCompress,
                &CompConfig.AutoKeyFrameEnabled,
                &CompConfig.AutoKeyFrameThreshold,
                &CompConfig.MinimumDistanceToKeyFrame,
                &CompConfig.ForceKeyFrameEvery,
                &CompConfig.NoiseSensitivity);
}

 ___  Dan Miller
(++,) CTO and founder, On2 Technologies

On Wed, 21 Aug 2002, Thomas Tomiczek wrote:

> Hello,
>
> Due to some licensing changes (and because I actually want to promote
> this, too) I want to replace our usage of Intel Indeo 5 with VP3 in a
> video conferencing pplication we are just developing (check:
> http://www.stnadby24.no/ for infos (english language) on the
> application).
>
> My problem is this: I need to define at least the bandwidth. I am
> feeding full frames from the camera with a given maximum framerate (10),
> and have a bandwidth of around 90kbit for the video stream.
>
> How? The codec seems to ignore any output side bandwidth setting I have
> entered.
>
> Can anyone recommend, please?
>
> Regards
>
> Thomas Tomiczek
> THONA Consulting Ltd.
> (Microsoft MVP C#/.NET)
>

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