[FFmpeg-devel] [PATCH] avfilter: add zscale filter

Moritz Barsnick barsnick at gmx.net
Tue Sep 22 21:52:12 CEST 2015

"I'm only here for the nitpicking." I noticed quite a lot of errors in
the various documentation recently, and joined the list to submit
patches. Let me start though by noting my observations here:

> +  --enable-libzimg         enable zimg, needed for zscale filter [no]

So, is it "z.img" or "zimg"?

> +The zscale filter forces the output display aspect ratio to be the same
> +of the input, by changing the output sample aspect ratio.
   ^^ as

> + at table @option
> + at item width, w
> + at item height, h
> +Set the output video dimension expression. Default value is the input
> +dimension.
> +
> +If the value is 0, the input width is used for the output.

a) This is identical to using iw?
b) Width, really? Even if used for the variable "h", "height"?


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