[Libav-user] how to set filter's name in filter graph

[qw]

Hi,

I define the following filter graph:

setpts=PTS-STARTPTS, fps=fps=20.00, scale=500:280; drawtext="fontfile=/usr/share/fonts/truetype/freefont/FreeSerif.ttf: text='Test Text'"
And avfilter_graph_parse_ptr(), and avfilter_graph_config() are used to create filter graph.

How to set the name of filter 'drawtext' instance in the filter graph, i.e. AVFilterContext::name?

Thanks!

B.R.

Andrew

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