[FFmpeg-devel] [RFC] change to the "setfield" filter

Stefano Sabatini stefasab at gmail.com
Mon Apr 16 13:37:09 CEST 2012

On date Monday 2012-04-16 11:59:15 +0100, Tim Nicholson encoded:
> The "-1" "auto" argument basically means "do nothing" and so afaik the
> only point in inserting the filter with this as a possibility is in auto
> generated scripts where the argument is derived from a variable which
> may be set externally due to other factors.
> Would it not make more sense, and increase the usefulness of the filter,
> if "-1" was taken to mean "progressive"?
> Then in the situation where the flagging is know to be incorrect placing
> this filter at the start of a chain would ensure that any auto inserted
> filters that honoured the flag would behave appropriately

Why not to add a new value for "progressive"? This way you preserve
the old semantics and don't break scripts.
FFmpeg = Formidable Fanciful Mastodontic Peaceless ExchanGer

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