[Libav-user] How can I use desktop duplication api from c

[Rakesh Chowdhury]

Hello libav users,

I'm new to libav and have been following along ffmpeg tutorials on GitHub
and reading ffmpeg documentation.

I have stumbled across a command line example usage of Desktop Duplication
API using Ffmpeg and I would like to replicate this using C code

ffmpeg -filter_complex ddagrab=0,hwdownload,format=bgra -c:v libx264 -crf
20 output.mkv

I have searched through the internet and couldn't find any good references
to this filter graph in particular. Can someone please guide me with an
example?

Thank you,
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