On date Wednesday 2010-05-05 22:53:52 +1000, Mark Heath encoded:
> Hello all,
> 
> I'm writing a filter, using the libavfilter framework, which swaps
> field order.
> 
> However I cannot determine if an input file is Progressive, top
> field first or bottom field first.
> Nor do I know how to set these flags.
> 
> None of the example code mentions interlace.
> 
> A Google search appears to turn up problems with people compiling
> the library more than specifically interlace related code.
> I found one page mentioning it was on a todo list.
> 
> Are these flags implemented?

Check SVN HEAD, Michael added them on Friday, also have a look at the
gsoc ML, we have a student working on the yadif filter porting.

And of course you're encouraged to contribute back to the project.

Regards.
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