Re: [Mlt-devel] How to add a text field with a given size at position

[Dan D. <da...@de...>]

On Tue, Jun 12, 2012 at 6:35 PM, Brian Matherly <pez...@ya...> wrote:
> Matt,
>
>
>>again a pretty basic question:
>>How do I place a text field with a given size at a given position in my output? Best would be in mlt-xml.
>
>
> A simple way to learn how to form XML is to use melt with the XML consumer.
>
> For example, run:
>     melt color:red -attach dynamictext:hello geometry="50%/50%:100%x100%:100"
> And you will see a red frame with the text "hello" in it. That's becasuse the SDL consumer is the default for melt.
>
> If you want to see what XML would produce that, run:
>     melt color:red -attach dynamictext:hello geometry="50%/50%:100%x100%:100" -consumer xml:output.mlt
> Adding the xml consumer will cause melt to dump the xml to file. Then, you can open the file to see how the properties were formed.
>
> To prove the xml is the correct input for MLT, just run:
>     melt output.mlt
> and you will see the red frame with text again.

good overview. thanks, Brian

> Also, it is important to understand how the geometry property works. The format is:
>      X,Y:WxH[:mix]

The usage of comma here is deprecated because in some locales it is
the radix. Instead, one should use something other than . , ; - or %.
Space works except not convenient on command line. The examples and
comment above mlt_geometry_parse() use X/Y.

> where X, Y, W, H are assumed to pixel units unless they have the suffix '%',
>
> ~Brian