Re: how to set “aspect-ratio” GstFraction * in element aspectratiocrop

Michael Gruner michael.gruner at ridgerun.com
Fri Jun 23 23:45:29 UTC 2023


You can set fractions as:

gint num=4;
gint den=3;
g_object_set( G_OBJECT( crop ), "aspect-ratio", num, den, NULL );

> On 23 Jun 2023, at 16:24, cfd new via gstreamer-devel <gstreamer-devel at lists.freedesktop.org> wrote:
> 
> I have a pipeline with element aspectratiocrop. When I tried to set aspect-ratio with
> std::string crop_str( "4/3" );
> auto crop = gst_element_factory_make( "aspectratiocrop", nullptr );
> g_object_set( G_OBJECT( crop ), "aspect-ratio", crop_str.c_str(), nullptr );
> 
> the app complains about 
> passed '0' as denometer for GstFraction. 
> How to set it properly?
> 
>    Joe

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